Auto-merge from mysql-5.5-merge.

72 files changed, 5056 insertions, 3382 deletions

diff --git a/sql/CMakeLists.txt b/sql/CMakeLists.txt
index 06e1a77e33e..224cf67af7f 100644
--- a/sql/CMakeLists.txt
+++ b/sql/CMakeLists.txt
@@ -70,10 +70,11 @@ SET (SQL_SOURCE
                sql_tablespace.cc events.cc ../sql-common/my_user.c 
                partition_info.cc rpl_utility.cc rpl_injector.cc sql_locale.cc
                rpl_rli.cc rpl_mi.cc sql_servers.cc sql_audit.cc
-               sql_connect.cc scheduler.cc 
-               sql_profile.cc event_parse_data.cc
-               sql_signal.cc rpl_handler.cc mdl.cc
+               sql_connect.cc scheduler.cc sql_partition_admin.cc
+               sql_profile.cc event_parse_data.cc sql_alter.cc
+               sql_signal.cc rpl_handler.cc mdl.cc sql_admin.cc
                transaction.cc sys_vars.cc sql_truncate.cc datadict.cc
+               sql_reload.cc
                ${GEN_SOURCES}
                ${MYSYS_LIBWRAP_SOURCE})
 
diff --git a/sql/Makefile.am b/sql/Makefile.am
index 7fed55f3cd6..1bc195a2981 100644
--- a/sql/Makefile.am
+++ b/sql/Makefile.am
@@ -40,6 +40,7 @@ DTRACEFILES =           filesort.o \
                         sql_cursor.o \
                         sql_delete.o \
                         sql_truncate.o \
+                        sql_reload.o \
                         sql_insert.o \
                         datadict.o \
                         sql_parse.o \
@@ -59,6 +60,7 @@ DTRACEFILES_DEPEND =    filesort.o \
                         sql_cursor.o \
                         sql_delete.o \
                         sql_truncate.o \
+			sql_reload.o \
                         sql_insert.o \
                         datadict.o \
                         sql_parse.o \
@@ -122,11 +124,11 @@ noinst_HEADERS =	item.h item_func.h item_sum.h item_cmpfunc.h \
 			sql_plugin.h authors.h event_parse_data.h \
 			event_data_objects.h event_scheduler.h \
 			sql_partition.h partition_info.h partition_element.h \
-			sql_audit.h \
+			sql_audit.h sql_alter.h sql_partition_admin.h \
 			contributors.h sql_servers.h sql_signal.h records.h \
 			sql_prepare.h rpl_handler.h replication.h mdl.h \
 			sql_plist.h transaction.h sys_vars.h sql_truncate.h \
-			datadict.h
+			sql_admin.h sql_reload.h datadict.h 
 
 mysqld_SOURCES =	sql_lex.cc sql_handler.cc sql_partition.cc \
 			item.cc item_sum.cc item_buff.cc item_func.cc \
@@ -140,10 +142,11 @@ mysqld_SOURCES =	sql_lex.cc sql_handler.cc sql_partition.cc \
 			sql_connect.cc scheduler.cc sql_parse.cc \
 			keycaches.cc set_var.cc sql_yacc.yy sys_vars.cc \
 			sql_base.cc table.cc sql_select.cc sql_insert.cc \
-			datadict.cc sql_profile.cc \
+			sql_reload.cc datadict.cc sql_profile.cc \
 			sql_prepare.cc sql_error.cc sql_locale.cc \
 			sql_update.cc sql_delete.cc uniques.cc sql_do.cc \
-			procedure.cc sql_test.cc sql_truncate.cc \
+			procedure.cc sql_test.cc sql_admin.cc \
+                        sql_truncate.cc \
 			log.cc init.cc derror.cc sql_acl.cc \
 			unireg.cc des_key_file.cc \
 			log_event.cc rpl_record.cc \
@@ -171,7 +174,7 @@ mysqld_SOURCES =	sql_lex.cc sql_handler.cc sql_partition.cc \
 			sql_builtin.cc sql_tablespace.cc partition_info.cc \
 			sql_servers.cc event_parse_data.cc sql_signal.cc \
 			rpl_handler.cc mdl.cc transaction.cc sql_audit.cc  \
-			sha2.cc
+			sql_alter.cc sql_partition_admin.cc sha2.cc
 
 nodist_mysqld_SOURCES =	mini_client_errors.c pack.c client.c my_time.c my_user.c 
 
diff --git a/sql/datadict.cc b/sql/datadict.cc
index 33c3b6bc700..e3f679cc7ec 100644
--- a/sql/datadict.cc
+++ b/sql/datadict.cc
@@ -22,7 +22,9 @@
 /**
   Check type of .frm if we are not going to parse it.
 
-  @param  path  path to FRM file
+  @param[in]  thd   The current session.
+  @param[in]  path  path to FRM file.
+  @param[out] dbt   db_type of the table if FRMTYPE_TABLE, otherwise undefined.
 
   @retval  FRMTYPE_ERROR        error
   @retval  FRMTYPE_TABLE        table
@@ -66,29 +68,28 @@ frm_type_enum dd_frm_type(THD *thd, char *path, enum legacy_db_type *dbt)
 
 
 /**
-  Given a table name, check if the storage engine for the
-  table referred by this name supports an option 'flag'.
-  Return an error if the table does not exist or is not a
-  base table.
+  Given a table name, check type of .frm and legacy table type.
 
-  @pre Any metadata lock on the table.
+  @param[in]   thd          The current session.
+  @param[in]   db           Table schema.
+  @param[in]   table_name   Table database.
+  @param[out]  table_type   handlerton of the table if FRMTYPE_TABLE,
+                            otherwise undefined.
 
-  @param[in]    thd         The current session.
-  @param[in]    db          Table schema.
-  @param[in]    table_name  Table database.
-  @param[in]    flag        The option to check.
-  @param[out]   yes_no      The result. Undefined if error.
+  @return FALSE if FRMTYPE_TABLE and storage engine found. TRUE otherwise.
 */
 
-bool dd_check_storage_engine_flag(THD *thd,
-                                  const char *db, const char *table_name,
-                                  uint32 flag, bool *yes_no)
+bool dd_frm_storage_engine(THD *thd, const char *db, const char *table_name,
+                           handlerton **table_type)
 {
   char path[FN_REFLEN + 1];
   enum legacy_db_type db_type;
-  handlerton *table_type;
   LEX_STRING db_name = {(char *) db, strlen(db)};
 
+  /* There should be at least some lock on the table.  */
+  DBUG_ASSERT(thd->mdl_context.is_lock_owner(MDL_key::TABLE, db,
+                                             table_name, MDL_SHARED));
+
   if (check_db_name(&db_name))
   {
     my_error(ER_WRONG_DB_NAME, MYF(0), db_name.str);
@@ -101,23 +102,47 @@ bool dd_check_storage_engine_flag(THD *thd,
     return TRUE;
   }
 
-  /* There should be at least some lock on the table.  */
-  DBUG_ASSERT(thd->mdl_context.is_lock_owner(MDL_key::TABLE, db,
-                                             table_name, MDL_SHARED));
-
   (void) build_table_filename(path, sizeof(path) - 1, db,
                               table_name, reg_ext, 0);
 
   dd_frm_type(thd, path, &db_type);
 
   /* Type is unknown if the object is not found or is not a table. */
-  if (db_type == DB_TYPE_UNKNOWN)
+  if (db_type == DB_TYPE_UNKNOWN ||
+      !(*table_type= ha_resolve_by_legacy_type(thd, db_type)))
   {
     my_error(ER_NO_SUCH_TABLE, MYF(0), db, table_name);
     return TRUE;
   }
 
-  table_type= ha_resolve_by_legacy_type(thd, db_type);
+  return FALSE;
+}
+
+
+/**
+  Given a table name, check if the storage engine for the
+  table referred by this name supports an option 'flag'.
+  Return an error if the table does not exist or is not a
+  base table.
+
+  @pre Any metadata lock on the table.
+
+  @param[in]    thd         The current session.
+  @param[in]    db          Table schema.
+  @param[in]    table_name  Table database.
+  @param[in]    flag        The option to check.
+  @param[out]   yes_no      The result. Undefined if error.
+*/
+
+bool dd_check_storage_engine_flag(THD *thd,
+                                  const char *db, const char *table_name,
+                                  uint32 flag, bool *yes_no)
+{
+  handlerton *table_type;
+
+  if (dd_frm_storage_engine(thd, db, table_name, &table_type))
+    return TRUE;
+
   *yes_no= ha_check_storage_engine_flag(table_type, flag);
 
   return FALSE;
@@ -152,9 +177,7 @@ bool dd_recreate_table(THD *thd, const char *db, const char *table_name)
   build_table_filename(path, sizeof(path) - 1, db, table_name, "", 0);
 
   /* Attempt to reconstruct the table. */
-  mysql_mutex_lock(&LOCK_open);
   error= ha_create_table(thd, path, db, table_name, &create_info, TRUE);
-  mysql_mutex_unlock(&LOCK_open);
 
   DBUG_RETURN(error);
 }
diff --git a/sql/datadict.h b/sql/datadict.h
index 05b5a9bba4b..65e40998929 100644
--- a/sql/datadict.h
+++ b/sql/datadict.h
@@ -31,6 +31,8 @@ enum frm_type_enum
 
 frm_type_enum dd_frm_type(THD *thd, char *path, enum legacy_db_type *dbt);
 
+bool dd_frm_storage_engine(THD *thd, const char *db, const char *table_name,
+                           handlerton **table_type);
 bool dd_check_storage_engine_flag(THD *thd,
                                   const char *db, const char *table_name,
                                   uint32 flag,
diff --git a/sql/event_db_repository.cc b/sql/event_db_repository.cc
index d47f1641bb0..db508e4ea41 100644
--- a/sql/event_db_repository.cc
+++ b/sql/event_db_repository.cc
@@ -996,24 +996,33 @@ Event_db_repository::load_named_event(THD *thd, LEX_STRING dbname,
                                       LEX_STRING name, Event_basic *etn)
 {
   bool ret;
-  TABLE *table= NULL;
   ulong saved_mode= thd->variables.sql_mode;
+  Open_tables_backup open_tables_backup;
+  TABLE_LIST event_table;
 
   DBUG_ENTER("Event_db_repository::load_named_event");
   DBUG_PRINT("enter",("thd: 0x%lx  name: %*s", (long) thd,
                       (int) name.length, name.str));
 
+  event_table.init_one_table("mysql", 5, "event", 5, "event", TL_READ);
+
   /* Reset sql_mode during data dictionary operations. */
   thd->variables.sql_mode= 0;
 
-  if (!(ret= open_event_table(thd, TL_READ, &table)))
+  /*
+    We don't use open_event_table() here to make sure that SHOW
+    CREATE EVENT works properly in transactional context, and
+    does not release transactional metadata locks when the
+    event table is closed.
+  */
+  if (!(ret= open_system_tables_for_read(thd, &event_table, &open_tables_backup)))
   {
-    if ((ret= find_named_event(dbname, name, table)))
+    if ((ret= find_named_event(dbname, name, event_table.table)))
       my_error(ER_EVENT_DOES_NOT_EXIST, MYF(0), name.str);
-    else if ((ret= etn->load_from_row(thd, table)))
+    else if ((ret= etn->load_from_row(thd, event_table.table)))
       my_error(ER_CANNOT_LOAD_FROM_TABLE, MYF(0), "event");
 
-    close_mysql_tables(thd);
+    close_system_tables(thd, &open_tables_backup);
   }
 
   thd->variables.sql_mode= saved_mode;
diff --git a/sql/events.cc b/sql/events.cc
index 99304a1c460..10a7535425f 100644
--- a/sql/events.cc
+++ b/sql/events.cc
@@ -699,7 +699,6 @@ send_show_create_event(THD *thd, Event_timed *et, Protocol *protocol)
 bool
 Events::show_create_event(THD *thd, LEX_STRING dbname, LEX_STRING name)
 {
-  Open_tables_backup open_tables_backup;
   Event_timed et;
   bool ret;
 
@@ -722,9 +721,7 @@ Events::show_create_event(THD *thd, LEX_STRING dbname, LEX_STRING name)
     deadlock can occur please refer to the description of 'system table'
     flag.
   */
-  thd->reset_n_backup_open_tables_state(&open_tables_backup);
   ret= db_repository->load_named_event(thd, dbname, name, &et);
-  thd->restore_backup_open_tables_state(&open_tables_backup);
 
   if (!ret)
     ret= send_show_create_event(thd, &et, thd->protocol);
diff --git a/sql/field.cc b/sql/field.cc
index 3c93ffadac5..fc55426b177 100644
--- a/sql/field.cc
+++ b/sql/field.cc
@@ -1329,7 +1329,7 @@ void Field::hash(ulong *nr, ulong *nr2)
   else
   {
     uint len= pack_length();
-    CHARSET_INFO *cs= charset();
+    CHARSET_INFO *cs= sort_charset();
     cs->coll->hash_sort(cs, ptr, len, nr, nr2);
   }
 }
diff --git a/sql/ha_ndbcluster.cc b/sql/ha_ndbcluster.cc
index d4a98265c49..15b017ece81 100644
--- a/sql/ha_ndbcluster.cc
+++ b/sql/ha_ndbcluster.cc
@@ -680,7 +680,7 @@ int ha_ndbcluster::ndb_err(NdbTransaction *trans)
     bzero((char*) &table_list,sizeof(table_list));
     table_list.db= m_dbname;
     table_list.alias= table_list.table_name= m_tabname;
-    close_cached_tables(thd, &table_list, FALSE, FALSE);
+    close_cached_tables(thd, &table_list, FALSE, LONG_TIMEOUT);
     break;
   }
   default:
@@ -5702,7 +5702,7 @@ int ha_ndbcluster::create(const char *name,
                                m_table->getObjectVersion(),
                                (is_truncate) ?
 			       SOT_TRUNCATE_TABLE : SOT_CREATE_TABLE, 
-			       0, 0, 1);
+			       0, 0);
       break;
     }
   }
@@ -6143,7 +6143,7 @@ int ha_ndbcluster::rename_table(const char *from, const char *to)
                                old_dbname, m_tabname,
                                ndb_table_id, ndb_table_version,
                                SOT_RENAME_TABLE,
-                               m_dbname, new_tabname, 1);
+                               m_dbname, new_tabname);
   }
 
   // If we are moving tables between databases, we need to recreate
@@ -6337,7 +6337,7 @@ retry_temporary_error1:
                              thd->query(), thd->query_length(),
                              share->db, share->table_name,
                              ndb_table_id, ndb_table_version,
-                             SOT_DROP_TABLE, 0, 0, 1);
+                             SOT_DROP_TABLE, 0, 0);
   }
   else if (table_dropped && share && share->op) /* ndbcluster_log_schema_op
                                                    will do a force GCP */
@@ -7019,7 +7019,6 @@ int ndbcluster_drop_database_impl(const char *path)
   while ((tabname=it++))
   {
     tablename_to_filename(tabname, tmp, FN_REFLEN - (tmp - full_path)-1);
-    mysql_mutex_lock(&LOCK_open);
     if (ha_ndbcluster::delete_table(0, ndb, full_path, dbname, tabname))
     {
       const NdbError err= dict->getNdbError();
@@ -7029,7 +7028,6 @@ int ndbcluster_drop_database_impl(const char *path)
         ret= ndb_to_mysql_error(&err);
       }
     }
-    mysql_mutex_unlock(&LOCK_open);
   }
   DBUG_RETURN(ret);      
 }
@@ -7056,7 +7054,7 @@ static void ndbcluster_drop_database(handlerton *hton, char *path)
   ha_ndbcluster::set_dbname(path, db);
   ndbcluster_log_schema_op(thd, 0,
                            thd->query(), thd->query_length(),
-                           db, "", 0, 0, SOT_DROP_DB, 0, 0, 0);
+                           db, "", 0, 0, SOT_DROP_DB, 0, 0);
 #endif
   DBUG_VOID_RETURN;
 }
@@ -7181,7 +7179,6 @@ int ndbcluster_find_all_files(THD *thd)
       my_free(data);
       my_free(pack_data);
 
-      mysql_mutex_lock(&LOCK_open);
       if (discover)
       {
         /* ToDo 4.1 database needs to be created if missing */
@@ -7199,7 +7196,6 @@ int ndbcluster_find_all_files(THD *thd)
                                        TRUE);
       }
 #endif
-      mysql_mutex_unlock(&LOCK_open);
     }
   }
   while (unhandled && retries);
@@ -7292,19 +7288,16 @@ int ndbcluster_find_files(handlerton *hton, THD *thd,
                            file_name->str, reg_ext, 0);
       if (my_access(name, F_OK))
       {
-        mysql_mutex_lock(&LOCK_open);
         DBUG_PRINT("info", ("Table %s listed and need discovery",
                             file_name->str));
         if (ndb_create_table_from_engine(thd, db, file_name->str))
         {
-          mysql_mutex_unlock(&LOCK_open);
           push_warning_printf(current_thd, MYSQL_ERROR::WARN_LEVEL_WARN,
                               ER_TABLE_EXISTS_ERROR,
                               "Discover of table %s.%s failed",
                               db, file_name->str);
           continue;
         }
-        mysql_mutex_unlock(&LOCK_open);
       }
       DBUG_PRINT("info", ("%s existed in NDB _and_ on disk ", file_name->str));
       file_on_disk= TRUE;
@@ -7361,10 +7354,8 @@ int ndbcluster_find_files(handlerton *hton, THD *thd,
       file_name_str= (char*)my_hash_element(&ok_tables, i);
       end= end1 +
         tablename_to_filename(file_name_str, end1, sizeof(name) - (end1 - name));
-      mysql_mutex_lock(&LOCK_open);
       ndbcluster_create_binlog_setup(ndb, name, end-name,
                                      db, file_name_str, TRUE);
-      mysql_mutex_unlock(&LOCK_open);
     }
   }
 #endif
@@ -7426,7 +7417,6 @@ int ndbcluster_find_files(handlerton *hton, THD *thd,
   }
 
   /* Lock mutex before creating .FRM files. */
-  mysql_mutex_lock(&LOCK_open);
   /* Create new files. */
   List_iterator_fast<char> it2(create_list);
   while ((file_name_str=it2++))
@@ -7441,8 +7431,6 @@ int ndbcluster_find_files(handlerton *hton, THD *thd,
     }
   }
 
-  mysql_mutex_unlock(&LOCK_open);
-
   my_hash_free(&ok_tables);
   my_hash_free(&ndb_tables);
 
@@ -8452,8 +8440,7 @@ int handle_trailing_share(NDB_SHARE *share)
   bzero((char*) &table_list,sizeof(table_list));
   table_list.db= share->db;
   table_list.alias= table_list.table_name= share->table_name;
-  mysql_mutex_assert_owner(&LOCK_open);
-  close_cached_tables(thd, &table_list, TRUE, FALSE);
+  close_cached_tables(thd, &table_list, FALSE, LONG_TIMEOUT);
 
   mysql_mutex_lock(&ndbcluster_mutex);
   /* ndb_share reference temporary free */
@@ -10612,13 +10599,13 @@ int ndbcluster_alter_tablespace(handlerton *hton,
                              thd->query(), thd->query_length(),
                              "", alter_info->tablespace_name,
                              0, 0,
-                             SOT_TABLESPACE, 0, 0, 0);
+                             SOT_TABLESPACE, 0, 0);
   else
     ndbcluster_log_schema_op(thd, 0,
                              thd->query(), thd->query_length(),
                              "", alter_info->logfile_group_name,
                              0, 0,
-                             SOT_LOGFILE_GROUP, 0, 0, 0);
+                             SOT_LOGFILE_GROUP, 0, 0);
 #endif
   DBUG_RETURN(FALSE);
 
diff --git a/sql/ha_ndbcluster_binlog.cc b/sql/ha_ndbcluster_binlog.cc
index 26fdb8e1425..861b44f74b1 100644
--- a/sql/ha_ndbcluster_binlog.cc
+++ b/sql/ha_ndbcluster_binlog.cc
@@ -360,7 +360,6 @@ ndbcluster_binlog_open_table(THD *thd, NDB_SHARE *share,
   int error;
   DBUG_ENTER("ndbcluster_binlog_open_table");
   
-  mysql_mutex_assert_owner(&LOCK_open);
   init_tmp_table_share(thd, table_share, share->db, 0, share->table_name, 
                        share->key);
   if ((error= open_table_def(thd, table_share, 0)))
@@ -376,7 +375,9 @@ ndbcluster_binlog_open_table(THD *thd, NDB_SHARE *share,
     free_table_share(table_share);
     DBUG_RETURN(error);
   }
+  mysql_mutex_lock(&LOCK_open);
   assign_new_table_id(table_share);
+  mysql_mutex_unlock(&LOCK_open);
 
   if (!reopen)
   {
@@ -625,7 +626,7 @@ ndbcluster_binlog_log_query(handlerton *hton, THD *thd, enum_binlog_command binl
   {
     ndbcluster_log_schema_op(thd, 0, query, query_length,
                              db, table_name, 0, 0, type,
-                             0, 0, 0);
+                             0, 0);
   }
   DBUG_VOID_RETURN;
 }
@@ -908,9 +909,7 @@ int ndbcluster_setup_binlog_table_shares(THD *thd)
   if (!ndb_schema_share &&
       ndbcluster_check_ndb_schema_share() == 0)
   {
-    mysql_mutex_lock(&LOCK_open);
     ndb_create_table_from_engine(thd, NDB_REP_DB, NDB_SCHEMA_TABLE);
-    mysql_mutex_unlock(&LOCK_open);
     if (!ndb_schema_share)
     {
       ndbcluster_create_schema_table(thd);
@@ -922,9 +921,7 @@ int ndbcluster_setup_binlog_table_shares(THD *thd)
   if (!ndb_apply_status_share &&
       ndbcluster_check_ndb_apply_status_share() == 0)
   {
-    mysql_mutex_lock(&LOCK_open);
     ndb_create_table_from_engine(thd, NDB_REP_DB, NDB_APPLY_TABLE);
-    mysql_mutex_unlock(&LOCK_open);
     if (!ndb_apply_status_share)
     {
       ndbcluster_create_ndb_apply_status_table(thd);
@@ -934,12 +931,10 @@ int ndbcluster_setup_binlog_table_shares(THD *thd)
   }
   if (!ndbcluster_find_all_files(thd))
   {
-    mysql_mutex_lock(&LOCK_open);
     ndb_binlog_tables_inited= TRUE;
     if (opt_ndb_extra_logging)
       sql_print_information("NDB Binlog: ndb tables writable");
-    close_cached_tables(NULL, NULL, TRUE, FALSE);
-    mysql_mutex_unlock(&LOCK_open);
+    close_cached_tables(NULL, NULL, FALSE, LONG_TIMEOUT);
     /* Signal injector thread that all is setup */
     mysql_cond_signal(&injector_cond);
   }
@@ -1276,8 +1271,7 @@ int ndbcluster_log_schema_op(THD *thd, NDB_SHARE *share,
                              uint32 ndb_table_id,
                              uint32 ndb_table_version,
                              enum SCHEMA_OP_TYPE type,
-                             const char *new_db, const char *new_table_name,
-                             int have_lock_open)
+                             const char *new_db, const char *new_table_name)
 {
   DBUG_ENTER("ndbcluster_log_schema_op");
   Thd_ndb *thd_ndb= get_thd_ndb(thd);
@@ -1580,11 +1574,6 @@ end:
 
     int max_timeout= DEFAULT_SYNC_TIMEOUT;
     mysql_mutex_lock(&ndb_schema_object->mutex);
-    if (have_lock_open)
-    {
-      mysql_mutex_assert_owner(&LOCK_open);
-      mysql_mutex_unlock(&LOCK_open);
-    }
     while (1)
     {
       struct timespec abstime;
@@ -1640,10 +1629,6 @@ end:
                              "distributing", ndb_schema_object->key);
       }
     }
-    if (have_lock_open)
-    {
-      mysql_mutex_lock(&LOCK_open);
-    }
     mysql_mutex_unlock(&ndb_schema_object->mutex);
   }
 
@@ -1726,7 +1711,6 @@ ndb_handle_schema_change(THD *thd, Ndb *ndb, NdbEventOperation *pOp,
     {
       DBUG_DUMP("frm", (uchar*) altered_table->getFrmData(), 
                 altered_table->getFrmLength());
-      mysql_mutex_lock(&LOCK_open);
       Ndb_table_guard ndbtab_g(dict, tabname);
       const NDBTAB *old= ndbtab_g.get_table();
       if (!old &&
@@ -1752,7 +1736,7 @@ ndb_handle_schema_change(THD *thd, Ndb *ndb, NdbEventOperation *pOp,
       bzero((char*) &table_list,sizeof(table_list));
       table_list.db= (char *)dbname;
       table_list.alias= table_list.table_name= (char *)tabname;
-      close_cached_tables(thd, &table_list, TRUE, FALSE);
+      close_cached_tables(thd, &table_list, FALSE, LONG_TIMEOUT);
 
       if ((error= ndbcluster_binlog_open_table(thd, share,
                                                table_share, table, 1)))
@@ -1763,8 +1747,6 @@ ndb_handle_schema_change(THD *thd, Ndb *ndb, NdbEventOperation *pOp,
       table_share= share->table_share;
       dbname= table_share->db.str;
       tabname= table_share->table_name.str;
-
-      mysql_mutex_unlock(&LOCK_open);
     }
     my_free(data);
     my_free(pack_data);
@@ -1858,7 +1840,7 @@ ndb_handle_schema_change(THD *thd, Ndb *ndb, NdbEventOperation *pOp,
     bzero((char*) &table_list,sizeof(table_list));
     table_list.db= (char *)dbname;
     table_list.alias= table_list.table_name= (char *)tabname;
-    close_cached_tables(thd, &table_list, FALSE, FALSE);
+    close_cached_tables(thd, &table_list, FALSE, LONG_TIMEOUT);
     /* ndb_share reference create free */
     DBUG_PRINT("NDB_SHARE", ("%s create free  use_count: %u",
                              share->key, share->use_count));
@@ -1979,7 +1961,7 @@ ndb_binlog_thread_handle_schema_event(THD *thd, Ndb *ndb,
             bzero((char*) &table_list,sizeof(table_list));
             table_list.db= schema->db;
             table_list.alias= table_list.table_name= schema->name;
-            close_cached_tables(thd, &table_list, FALSE, FALSE);
+            close_cached_tables(thd, &table_list, FALSE, LONG_TIMEOUT);
           }
           /* ndb_share reference temporary free */
           if (share)
@@ -1991,7 +1973,6 @@ ndb_binlog_thread_handle_schema_event(THD *thd, Ndb *ndb,
         }
         // fall through
         case SOT_CREATE_TABLE:
-          mysql_mutex_lock(&LOCK_open);
           if (ndbcluster_check_if_local_table(schema->db, schema->name))
           {
             DBUG_PRINT("info", ("NDB Binlog: Skipping locally defined table '%s.%s'",
@@ -2005,7 +1986,6 @@ ndb_binlog_thread_handle_schema_event(THD *thd, Ndb *ndb,
           {
             print_could_not_discover_error(thd, schema);
           }
-          mysql_mutex_unlock(&LOCK_open);
           log_query= 1;
           break;
         case SOT_DROP_DB:
@@ -2096,7 +2076,7 @@ ndb_binlog_thread_handle_schema_event(THD *thd, Ndb *ndb,
       mysql_mutex_unlock(&ndb_schema_share_mutex);
       /* end protect ndb_schema_share */
 
-      close_cached_tables(NULL, NULL, FALSE, FALSE);
+      close_cached_tables(NULL, NULL, FALSE, LONG_TIMEOUT);
       // fall through
     case NDBEVENT::TE_ALTER:
       ndb_handle_schema_change(thd, ndb, pOp, tmp_share);
@@ -2253,7 +2233,7 @@ ndb_binlog_thread_handle_schema_event_post_epoch(THD *thd,
           bzero((char*) &table_list,sizeof(table_list));
           table_list.db= schema->db;
           table_list.alias= table_list.table_name= schema->name;
-          close_cached_tables(thd, &table_list, FALSE, FALSE);
+          close_cached_tables(thd, &table_list, FALSE, LONG_TIMEOUT);
         }
         if (schema_type != SOT_ALTER_TABLE)
           break;
@@ -2274,7 +2254,6 @@ ndb_binlog_thread_handle_schema_event_post_epoch(THD *thd,
             free_share(&share);
             share= 0;
           }
-          mysql_mutex_lock(&LOCK_open);
           if (ndbcluster_check_if_local_table(schema->db, schema->name))
           {
             DBUG_PRINT("info", ("NDB Binlog: Skipping locally defined table '%s.%s'",
@@ -2288,7 +2267,6 @@ ndb_binlog_thread_handle_schema_event_post_epoch(THD *thd,
           {
             print_could_not_discover_error(thd, schema);
           }
-          mysql_mutex_unlock(&LOCK_open);
         }
         break;
       default:
@@ -3154,8 +3132,6 @@ ndbcluster_handle_drop_table(Ndb *ndb, const char *event_name,
 #ifdef SYNC_DROP_
   thd->proc_info= "Syncing ndb table schema operation and binlog";
   mysql_mutex_lock(&share->mutex);
-  mysql_mutex_assert_owner(&LOCK_open);
-  mysql_mutex_unlock(&LOCK_open);
   int max_timeout= DEFAULT_SYNC_TIMEOUT;
   while (share->op)
   {
@@ -3181,7 +3157,6 @@ ndbcluster_handle_drop_table(Ndb *ndb, const char *event_name,
                            type_str, share->key);
     }
   }
-  mysql_mutex_lock(&LOCK_open);
   mysql_mutex_unlock(&share->mutex);
 #else
   mysql_mutex_lock(&share->mutex);
@@ -3963,9 +3938,9 @@ restart:
          !ndb_binlog_running))
       break; /* Shutting down server */
 
-    if (ndb_binlog_index && ndb_binlog_index->s->needs_reopen())
+    if (ndb_binlog_index && ndb_binlog_index->s->has_old_version())
     {
-      if (ndb_binlog_index->s->needs_reopen())
+      if (ndb_binlog_index->s->has_old_version())
       {
         trans_commit_stmt(thd);
         close_thread_tables(thd);
diff --git a/sql/ha_ndbcluster_binlog.h b/sql/ha_ndbcluster_binlog.h
index 4d2a49588b4..5dbcf0fa43f 100644
--- a/sql/ha_ndbcluster_binlog.h
+++ b/sql/ha_ndbcluster_binlog.h
@@ -158,8 +158,7 @@ int ndbcluster_log_schema_op(THD *thd, NDB_SHARE *share,
                              uint32 ndb_table_version,
                              enum SCHEMA_OP_TYPE type,
                              const char *new_db,
-                             const char *new_table_name,
-                             int have_lock_open);
+                             const char *new_table_name);
 int ndbcluster_handle_drop_table(Ndb *ndb, const char *event_name,
                                  NDB_SHARE *share,
                                  const char *type_str);
diff --git a/sql/ha_ndbcluster_cond.cc b/sql/ha_ndbcluster_cond.cc
index 6df1f4881c3..8a96ae41453 100644
--- a/sql/ha_ndbcluster_cond.cc
+++ b/sql/ha_ndbcluster_cond.cc
@@ -35,6 +35,110 @@
 typedef NdbDictionary::Column NDBCOL;
 typedef NdbDictionary::Table NDBTAB;
 
+
+/**
+  Serialize a constant item into a Ndb_cond node.
+
+  @param  const_type  item's result type
+  @param  item        item to be serialized
+  @param  curr_cond   Ndb_cond node the item to be serialized into
+  @param  context     Traverse context
+*/
+
+static void ndb_serialize_const(Item_result const_type, const Item *item,
+                                Ndb_cond *curr_cond,
+                                Ndb_cond_traverse_context *context)
+{
+  DBUG_ASSERT(item->const_item());
+  switch (const_type) {
+  case STRING_RESULT:
+  {
+    NDB_ITEM_QUALIFICATION q;
+    q.value_type= Item::STRING_ITEM;
+    curr_cond->ndb_item= new Ndb_item(NDB_VALUE, q, item); 
+    if (! context->expecting_no_field_result())
+    {
+      // We have not seen the field argument yet
+      context->expect_only(Item::FIELD_ITEM);
+      context->expect_only_field_result(STRING_RESULT);
+      context->expect_collation(item->collation.collation);
+    }
+    else
+    {
+      // Expect another logical expression
+      context->expect_only(Item::FUNC_ITEM);
+      context->expect(Item::COND_ITEM);
+      // Check that string result have correct collation
+      if (!context->expecting_collation(item->collation.collation))
+      {
+        DBUG_PRINT("info", ("Found non-matching collation %s",  
+                            item->collation.collation->name));
+        context->supported= FALSE;
+      }
+    }
+    break;
+  }
+  case REAL_RESULT:
+  {
+    NDB_ITEM_QUALIFICATION q;
+    q.value_type= Item::REAL_ITEM;
+    curr_cond->ndb_item= new Ndb_item(NDB_VALUE, q, item);
+    if (! context->expecting_no_field_result()) 
+    {
+      // We have not seen the field argument yet
+      context->expect_only(Item::FIELD_ITEM);
+      context->expect_only_field_result(REAL_RESULT);
+    }
+    else
+    {
+      // Expect another logical expression
+      context->expect_only(Item::FUNC_ITEM);
+      context->expect(Item::COND_ITEM);
+    }
+    break;
+  }
+  case INT_RESULT:
+  {
+    NDB_ITEM_QUALIFICATION q;
+    q.value_type= Item::INT_ITEM;
+    curr_cond->ndb_item= new Ndb_item(NDB_VALUE, q, item);
+    if (! context->expecting_no_field_result()) 
+    {
+      // We have not seen the field argument yet
+      context->expect_only(Item::FIELD_ITEM);
+      context->expect_only_field_result(INT_RESULT);
+    }
+    else
+    {
+      // Expect another logical expression
+      context->expect_only(Item::FUNC_ITEM);
+      context->expect(Item::COND_ITEM);
+    }
+    break;
+  }
+  case DECIMAL_RESULT:
+  {
+    NDB_ITEM_QUALIFICATION q;
+    q.value_type= Item::DECIMAL_ITEM;
+    curr_cond->ndb_item= new Ndb_item(NDB_VALUE, q, item);
+    if (! context->expecting_no_field_result()) 
+    {
+      // We have not seen the field argument yet
+      context->expect_only(Item::FIELD_ITEM);
+      context->expect_only_field_result(DECIMAL_RESULT);
+    }
+    else
+    {
+      // Expect another logical expression
+      context->expect_only(Item::FUNC_ITEM);
+      context->expect(Item::COND_ITEM);
+    }
+    break;
+  }
+  default:
+    break;
+  }
+}
 /*
   Serialize the item tree into a linked list represented by Ndb_cond
   for fast generation of NbdScanFilter. Adds information such as
@@ -113,7 +217,7 @@ void ndb_serialize_cond(const Item *item, void *arg)
           to ndb_serialize_cond and end of rewrite statement 
           is wrapped in end of ndb_serialize_cond
         */
-        if (context->expecting(item->type()))
+        if (context->expecting(item->type()) || item->const_item())
         {
           // This is the <field>|<const> item, save it in the rewrite context
           rewrite_context2->left_hand_item= item;
@@ -597,108 +701,12 @@ void ndb_serialize_cond(const Item *item, void *arg)
             DBUG_PRINT("info", ("result type %d", func_item->result_type()));
             if (func_item->const_item())
             {
-              switch (func_item->result_type()) {
-              case STRING_RESULT:
-              {
-                NDB_ITEM_QUALIFICATION q;
-                q.value_type= Item::STRING_ITEM;
-                curr_cond->ndb_item= new Ndb_item(NDB_VALUE, q, item); 
-                if (! context->expecting_no_field_result())
-                {
-                  // We have not seen the field argument yet
-                  context->expect_only(Item::FIELD_ITEM);
-                  context->expect_only_field_result(STRING_RESULT);
-                  context->expect_collation(func_item->collation.collation);
-                }
-                else
-                {
-                  // Expect another logical expression
-                  context->expect_only(Item::FUNC_ITEM);
-                  context->expect(Item::COND_ITEM);
-                  // Check that string result have correct collation
-                  if (!context->expecting_collation(item->collation.collation))
-                  {
-                    DBUG_PRINT("info", ("Found non-matching collation %s",  
-                                        item->collation.collation->name));
-                    context->supported= FALSE;
-                  }
-                }
-                // Skip any arguments since we will evaluate function instead
-                DBUG_PRINT("info", ("Skip until end of arguments marker"));
-                context->skip= func_item->argument_count();
-                break;
-              }
-              case REAL_RESULT:
-              {
-                NDB_ITEM_QUALIFICATION q;
-                q.value_type= Item::REAL_ITEM;
-                curr_cond->ndb_item= new Ndb_item(NDB_VALUE, q, item);
-                if (! context->expecting_no_field_result()) 
-                {
-                  // We have not seen the field argument yet
-                  context->expect_only(Item::FIELD_ITEM);
-                  context->expect_only_field_result(REAL_RESULT);
-                }
-                else
-                {
-                  // Expect another logical expression
-                  context->expect_only(Item::FUNC_ITEM);
-                  context->expect(Item::COND_ITEM);
-                }
-                
-                // Skip any arguments since we will evaluate function instead
-                DBUG_PRINT("info", ("Skip until end of arguments marker"));
-                context->skip= func_item->argument_count();
-                break;
-              }
-              case INT_RESULT:
-              {
-                NDB_ITEM_QUALIFICATION q;
-                q.value_type= Item::INT_ITEM;
-                curr_cond->ndb_item= new Ndb_item(NDB_VALUE, q, item);
-                if (! context->expecting_no_field_result()) 
-                {
-                  // We have not seen the field argument yet
-                  context->expect_only(Item::FIELD_ITEM);
-                  context->expect_only_field_result(INT_RESULT);
-                }
-                else
-                {
-                  // Expect another logical expression
-                  context->expect_only(Item::FUNC_ITEM);
-                  context->expect(Item::COND_ITEM);
-                }
-                
-                // Skip any arguments since we will evaluate function instead
-                DBUG_PRINT("info", ("Skip until end of arguments marker"));
-                context->skip= func_item->argument_count();
-                break;
-              }
-              case DECIMAL_RESULT:
-              {
-                NDB_ITEM_QUALIFICATION q;
-                q.value_type= Item::DECIMAL_ITEM;
-                curr_cond->ndb_item= new Ndb_item(NDB_VALUE, q, item);
-                if (! context->expecting_no_field_result()) 
-                {
-                  // We have not seen the field argument yet
-                  context->expect_only(Item::FIELD_ITEM);
-                  context->expect_only_field_result(DECIMAL_RESULT);
-                }
-                else
-                {
-                  // Expect another logical expression
-                  context->expect_only(Item::FUNC_ITEM);
-                  context->expect(Item::COND_ITEM);
-                }
-                // Skip any arguments since we will evaluate function instead
-                DBUG_PRINT("info", ("Skip until end of arguments marker"));
-                context->skip= func_item->argument_count();
-                break;
-              }
-              default:
-                break;
-              }
+              ndb_serialize_const(func_item->result_type(), item, curr_cond,
+                                  context);
+
+              // Skip any arguments since we will evaluate function instead
+              DBUG_PRINT("info", ("Skip until end of arguments marker"));
+              context->skip= func_item->argument_count();
             }
             else
               // Function does not return constant expression
@@ -883,6 +891,19 @@ void ndb_serialize_cond(const Item *item, void *arg)
           }
           break;
         }
+        case Item::CACHE_ITEM:
+        {
+          DBUG_PRINT("info", ("CACHE_ITEM"));
+          if (item->const_item())
+          {
+            ndb_serialize_const(((Item_cache*)item)->result_type(), item,
+                                curr_cond, context);
+          }
+          else
+            context->supported= FALSE;
+
+          break;
+        }
         default:
         {
           DBUG_PRINT("info", ("Found item of type %d", item->type()));
diff --git a/sql/ha_partition.cc b/sql/ha_partition.cc
index 7891f658f45..e6915b45a97 100644
--- a/sql/ha_partition.cc
+++ b/sql/ha_partition.cc
@@ -2446,9 +2446,14 @@ bool ha_partition::get_from_handler_file(const char *name, MEM_ROOT *mem_root)
   tot_partition_words= (m_tot_parts + 3) / 4;
   engine_array= (handlerton **) my_alloca(m_tot_parts * sizeof(handlerton*));
   for (i= 0; i < m_tot_parts; i++)
+  {
     engine_array[i]= ha_resolve_by_legacy_type(ha_thd(),
                                                (enum legacy_db_type)
-                                               *(uchar *) ((file_buffer) + 12 + i));
+                                               *(uchar *) ((file_buffer) +
+                                                           12 + i));
+    if (!engine_array[i])
+      goto err3;
+  }
   address_tot_name_len= file_buffer + 12 + 4 * tot_partition_words;
   tot_name_words= (uint4korr(address_tot_name_len) + 3) / 4;
   if (len_words != (tot_partition_words + tot_name_words + 4))
diff --git a/sql/handler.cc b/sql/handler.cc
index 9893b3cac16..567dbe6ea49 100644
--- a/sql/handler.cc
+++ b/sql/handler.cc
@@ -3670,6 +3670,34 @@ int ha_create_table_from_engine(THD* thd, const char *db, const char *name)
   DBUG_RETURN(error != 0);
 }
 
+
+/**
+  Try to find a table in a storage engine. 
+
+  @param db   Normalized table schema name
+  @param name Normalized table name.
+  @param[out] exists Only valid if the function succeeded.
+
+  @retval TRUE   An error is found
+  @retval FALSE  Success, check *exists
+*/
+
+bool
+ha_check_if_table_exists(THD* thd, const char *db, const char *name,
+                         bool *exists)
+{
+  uchar *frmblob= NULL;
+  size_t frmlen;
+  DBUG_ENTER("ha_check_if_table_exists");
+
+  *exists= ! ha_discover(thd, db, name, &frmblob, &frmlen);
+  if (*exists)
+    my_free(frmblob);
+
+  DBUG_RETURN(FALSE);
+}
+
+
 void st_ha_check_opt::init()
 {
   flags= sql_flags= 0;
diff --git a/sql/handler.h b/sql/handler.h
index cad97c1f751..b1d64a1114b 100644
--- a/sql/handler.h
+++ b/sql/handler.h
@@ -1001,7 +1001,6 @@ typedef struct st_ha_create_information
   uint merge_insert_method;
   uint extra_size;                      /* length of extra data segment */
   enum enum_ha_unused unused1;
-  bool table_existed;			/* 1 in create if table existed */
   bool frm_only;                        /* 1 if no ha_create_table() */
   bool varchar;                         /* 1 if table has a VARCHAR */
   enum ha_storage_media storage_media;  /* DEFAULT, DISK or MEMORY */
@@ -2120,6 +2119,8 @@ bool ha_show_status(THD *thd, handlerton *db_type, enum ha_stat_type stat);
 
 /* discovery */
 int ha_create_table_from_engine(THD* thd, const char *db, const char *name);
+bool ha_check_if_table_exists(THD* thd, const char *db, const char *name,
+                             bool *exists);
 int ha_discover(THD* thd, const char* dbname, const char* name,
                 uchar** frmblob, size_t* frmlen);
 int ha_find_files(THD *thd,const char *db,const char *path,
diff --git a/sql/item.cc b/sql/item.cc
index 1decb5ec426..427146e11dc 100644
--- a/sql/item.cc
+++ b/sql/item.cc
@@ -5931,7 +5931,8 @@ bool Item::cache_const_expr_analyzer(uchar **arg)
       a subselect (they use their own cache).
     */
     if (const_item() &&
-        !(item->basic_const_item() || item->type() == Item::FIELD_ITEM ||
+        !(basic_const_item() || item->basic_const_item() ||
+          item->type() == Item::FIELD_ITEM ||
           item->type() == SUBSELECT_ITEM ||
            /*
              Do not cache GET_USER_VAR() function as its const_item() may
@@ -7509,9 +7510,14 @@ String *Item_cache_datetime::val_str(String *str)
         return NULL;
       if (cached_field_type == MYSQL_TYPE_TIME)
       {
-        ulonglong time= int_value;
-        DBUG_ASSERT(time <= TIME_MAX_VALUE);
+        longlong time= int_value;
         set_zero_time(&ltime, MYSQL_TIMESTAMP_TIME);
+        if (time < 0)
+        {
+          time= -time;
+          ltime.neg= TRUE;
+        }
+        DBUG_ASSERT(time <= TIME_MAX_VALUE);
         ltime.second= time % 100;
         time/= 100;
         ltime.minute= time % 100;
diff --git a/sql/item.h b/sql/item.h
index 7f148a0a3e6..8e8199ecac8 100644
--- a/sql/item.h
+++ b/sql/item.h
@@ -547,7 +547,7 @@ public:
      @see Query_arena::free_list
    */
   Item *next;
-  uint32 max_length;
+  uint32 max_length;                    /* Maximum length, in bytes */
   uint name_length;                     /* Length of name */
   int8 marker;
   uint8 decimals;
@@ -1221,6 +1221,18 @@ public:
     max_length= char_to_byte_length_safe(max_char_length_arg,
                                          collation.collation->mbmaxlen);
   }
+  void fix_char_length_ulonglong(ulonglong max_char_length_arg)
+  {
+    ulonglong max_result_length= max_char_length_arg *
+                                 collation.collation->mbmaxlen;
+    if (max_result_length >= MAX_BLOB_WIDTH)
+    {
+      max_length= MAX_BLOB_WIDTH;
+      maybe_null= 1;
+    }
+    else
+      max_length= max_result_length;
+  }
   void fix_length_and_charset_datetime(uint32 max_char_length_arg)
   {
     collation.set(&my_charset_numeric, DERIVATION_NUMERIC, MY_REPERTOIRE_ASCII);
@@ -2825,6 +2837,7 @@ protected:
     cached_result_type= item->result_type();
     unsigned_flag= item->unsigned_flag;
     fixed= item->fixed;
+    collation.set(item->collation);
   }
 
 public:
@@ -3267,6 +3280,12 @@ public:
   bool basic_const_item() const
   { return test(example && example->basic_const_item());}
   virtual void clear() { null_value= TRUE; value_cached= FALSE; }
+  Item_result result_type() const
+  {
+    if (!example)
+      return INT_RESULT;
+    return Field::result_merge_type(example->field_type());
+  }
 };
 
 
@@ -3336,7 +3355,9 @@ public:
     is_varbinary(item->type() == FIELD_ITEM &&
                  cached_field_type == MYSQL_TYPE_VARCHAR &&
                  !((const Item_field *) item)->field->has_charset())
-  {}
+  {
+    collation.set(const_cast<DTCollation&>(item->collation));
+  }
   double val_real();
   longlong val_int();
   String* val_str(String *);
diff --git a/sql/item_cmpfunc.cc b/sql/item_cmpfunc.cc
index c18b79371df..641d3726aca 100644
--- a/sql/item_cmpfunc.cc
+++ b/sql/item_cmpfunc.cc
@@ -2374,6 +2374,7 @@ void Item_func_between::print(String *str, enum_query_type query_type)
 void
 Item_func_ifnull::fix_length_and_dec()
 {
+  uint32 char_length;
   agg_result_type(&hybrid_type, args, 2);
   maybe_null=args[1]->maybe_null;
   decimals= max(args[0]->decimals, args[1]->decimals);
@@ -2381,20 +2382,21 @@ Item_func_ifnull::fix_length_and_dec()
 
   if (hybrid_type == DECIMAL_RESULT || hybrid_type == INT_RESULT) 
   {
-    int len0= args[0]->max_length - args[0]->decimals
+    int len0= args[0]->max_char_length() - args[0]->decimals
       - (args[0]->unsigned_flag ? 0 : 1);
 
-    int len1= args[1]->max_length - args[1]->decimals
+    int len1= args[1]->max_char_length() - args[1]->decimals
       - (args[1]->unsigned_flag ? 0 : 1);
 
-    max_length= max(len0, len1) + decimals + (unsigned_flag ? 0 : 1);
+    char_length= max(len0, len1) + decimals + (unsigned_flag ? 0 : 1);
   }
   else
-    max_length= max(args[0]->max_length, args[1]->max_length);
+    char_length= max(args[0]->max_char_length(), args[1]->max_char_length());
 
   switch (hybrid_type) {
   case STRING_RESULT:
-    agg_arg_charsets_for_comparison(collation, args, arg_count);
+    if (agg_arg_charsets_for_comparison(collation, args, arg_count))
+      return;
     break;
   case DECIMAL_RESULT:
   case REAL_RESULT:
@@ -2406,6 +2408,7 @@ Item_func_ifnull::fix_length_and_dec()
   default:
     DBUG_ASSERT(0);
   }
+  fix_char_length(char_length);
   cached_field_type= agg_field_type(args, 2);
 }
 
@@ -2579,6 +2582,7 @@ Item_func_if::fix_length_and_dec()
     cached_field_type= agg_field_type(args + 1, 2);
   }
 
+  uint32 char_length;
   if ((cached_result_type == DECIMAL_RESULT )
       || (cached_result_type == INT_RESULT))
   {
@@ -2588,10 +2592,11 @@ Item_func_if::fix_length_and_dec()
     int len2= args[2]->max_length - args[2]->decimals
       - (args[2]->unsigned_flag ? 0 : 1);
 
-    max_length=max(len1, len2) + decimals + (unsigned_flag ? 0 : 1);
+    char_length= max(len1, len2) + decimals + (unsigned_flag ? 0 : 1);
   }
   else
-    max_length= max(args[1]->max_length, args[2]->max_length);
+    char_length= max(args[1]->max_char_length(), args[2]->max_char_length());
+  fix_char_length(char_length);
 }
 
 
@@ -2901,7 +2906,7 @@ bool Item_func_case::fix_fields(THD *thd, Item **ref)
 
 void Item_func_case::agg_str_lengths(Item* arg)
 {
-  set_if_bigger(max_length, arg->max_length);
+  fix_char_length(max(max_char_length(), arg->max_char_length()));
   set_if_bigger(decimals, arg->decimals);
   unsigned_flag= unsigned_flag && arg->unsigned_flag;
 }
@@ -3129,9 +3134,10 @@ void Item_func_coalesce::fix_length_and_dec()
   agg_result_type(&hybrid_type, args, arg_count);
   switch (hybrid_type) {
   case STRING_RESULT:
-    count_only_length();
     decimals= NOT_FIXED_DEC;
-    agg_arg_charsets_for_string_result(collation, args, arg_count);
+    if (agg_arg_charsets_for_string_result(collation, args, arg_count))
+      return;
+    count_only_length();
     break;
   case DECIMAL_RESULT:
     count_decimal_length();
diff --git a/sql/item_func.cc b/sql/item_func.cc
index 833eac6893b..6699b2820e6 100644
--- a/sql/item_func.cc
+++ b/sql/item_func.cc
@@ -564,8 +564,9 @@ void Item_func::count_decimal_length()
     set_if_smaller(unsigned_flag, args[i]->unsigned_flag);
   }
   int precision= min(max_int_part + decimals, DECIMAL_MAX_PRECISION);
-  max_length= my_decimal_precision_to_length_no_truncation(precision, decimals,
-                                                           unsigned_flag);
+  fix_char_length(my_decimal_precision_to_length_no_truncation(precision,
+                                                               decimals,
+                                                               unsigned_flag));
 }
 
 
@@ -575,13 +576,14 @@ void Item_func::count_decimal_length()
 
 void Item_func::count_only_length()
 {
-  max_length= 0;
+  uint32 char_length= 0;
   unsigned_flag= 0;
   for (uint i=0 ; i < arg_count ; i++)
   {
-    set_if_bigger(max_length, args[i]->max_length);
+    set_if_bigger(char_length, args[i]->max_char_length());
     set_if_bigger(unsigned_flag, args[i]->unsigned_flag);
   }
+  fix_char_length(char_length);
 }
 
 
@@ -2531,6 +2533,8 @@ void Item_func_min_max::fix_length_and_dec()
                                                                  decimals,
                                                                  unsigned_flag));
   }
+  else if (cmp_type == REAL_RESULT)
+    fix_char_length(float_length(decimals));
   cached_field_type= agg_field_type(args, arg_count);
 }
 
diff --git a/sql/item_strfunc.cc b/sql/item_strfunc.cc
index 851d0e07a7e..6d3514bf356 100644
--- a/sql/item_strfunc.cc
+++ b/sql/item_strfunc.cc
@@ -605,27 +605,15 @@ null:
 
 void Item_func_concat::fix_length_and_dec()
 {
-  ulonglong max_result_length= 0;
+  ulonglong char_length= 0;
 
   if (agg_arg_charsets_for_string_result(collation, args, arg_count))
     return;
 
   for (uint i=0 ; i < arg_count ; i++)
-  {
-    if (args[i]->collation.collation->mbmaxlen != collation.collation->mbmaxlen)
-      max_result_length+= (args[i]->max_length /
-                           args[i]->collation.collation->mbmaxlen) *
-                           collation.collation->mbmaxlen;
-    else
-      max_result_length+= args[i]->max_length;
-  }
+    char_length+= args[i]->max_char_length();
 
-  if (max_result_length >= MAX_BLOB_WIDTH)
-  {
-    max_result_length= MAX_BLOB_WIDTH;
-    maybe_null= 1;
-  }
-  max_length= (ulong) max_result_length;
+  fix_char_length_ulonglong(char_length);
 }
 
 /**
@@ -962,7 +950,7 @@ null:
 
 void Item_func_concat_ws::fix_length_and_dec()
 {
-  ulonglong max_result_length;
+  ulonglong char_length;
 
   if (agg_arg_charsets_for_string_result(collation, args, arg_count))
     return;
@@ -972,16 +960,11 @@ void Item_func_concat_ws::fix_length_and_dec()
      it is done on parser level in sql_yacc.yy
      so, (arg_count - 2) is safe here.
   */
-  max_result_length= (ulonglong) args[0]->max_length * (arg_count - 2);
+  char_length= (ulonglong) args[0]->max_char_length() * (arg_count - 2);
   for (uint i=1 ; i < arg_count ; i++)
-    max_result_length+=args[i]->max_length;
+    char_length+= args[i]->max_char_length();
 
-  if (max_result_length >= MAX_BLOB_WIDTH)
-  {
-    max_result_length= MAX_BLOB_WIDTH;
-    maybe_null= 1;
-  }
-  max_length= (ulong) max_result_length;
+  fix_char_length_ulonglong(char_length);
 }
 
 
@@ -1036,6 +1019,7 @@ String *Item_func_reverse::val_str(String *str)
 void Item_func_reverse::fix_length_and_dec()
 {
   agg_arg_charsets_for_string_result(collation, args, 1);
+  DBUG_ASSERT(collation.collation != NULL);
   fix_char_length(args[0]->max_char_length());
 }
 
@@ -1165,22 +1149,17 @@ null:
 
 void Item_func_replace::fix_length_and_dec()
 {
-  ulonglong max_result_length= args[0]->max_length;
-  int diff=(int) (args[2]->max_length - args[1]->max_length);
-  if (diff > 0 && args[1]->max_length)
+  ulonglong char_length= (ulonglong) args[0]->max_char_length();
+  int diff=(int) (args[2]->max_char_length() - args[1]->max_char_length());
+  if (diff > 0 && args[1]->max_char_length())
   {						// Calculate of maxreplaces
-    ulonglong max_substrs= max_result_length/args[1]->max_length;
-    max_result_length+= max_substrs * (uint) diff;
-  }
-  if (max_result_length >= MAX_BLOB_WIDTH)
-  {
-    max_result_length= MAX_BLOB_WIDTH;
-    maybe_null= 1;
+    ulonglong max_substrs= char_length / args[1]->max_char_length();
+    char_length+= max_substrs * (uint) diff;
   }
-  max_length= (ulong) max_result_length;
-  
+
   if (agg_arg_charsets_for_comparison(collation, args, 3))
     return;
+  fix_char_length_ulonglong(char_length);
 }
 
 
@@ -1235,19 +1214,14 @@ null:
 
 void Item_func_insert::fix_length_and_dec()
 {
-  ulonglong max_result_length;
+  ulonglong char_length;
 
   // Handle character set for args[0] and args[3].
   if (agg_arg_charsets_for_string_result(collation, args, 2, 3))
     return;
-  max_result_length= ((ulonglong) args[0]->max_length+
-                      (ulonglong) args[3]->max_length);
-  if (max_result_length >= MAX_BLOB_WIDTH)
-  {
-    max_result_length= MAX_BLOB_WIDTH;
-    maybe_null= 1;
-  }
-  max_length= (ulong) max_result_length;
+  char_length= ((ulonglong) args[0]->max_char_length() +
+                (ulonglong) args[3]->max_char_length());
+  fix_char_length_ulonglong(char_length);
 }
 
 
@@ -1287,17 +1261,19 @@ String *Item_str_conv::val_str(String *str)
 void Item_func_lcase::fix_length_and_dec()
 {
   agg_arg_charsets_for_string_result(collation, args, 1);
+  DBUG_ASSERT(collation.collation != NULL);
   multiply= collation.collation->casedn_multiply;
   converter= collation.collation->cset->casedn;
-  max_length= args[0]->max_length * multiply;
+  fix_char_length_ulonglong((ulonglong) args[0]->max_char_length() * multiply);
 }
 
 void Item_func_ucase::fix_length_and_dec()
 {
   agg_arg_charsets_for_string_result(collation, args, 1);
+  DBUG_ASSERT(collation.collation != NULL);
   multiply= collation.collation->caseup_multiply;
   converter= collation.collation->cset->caseup;
-  max_length= args[0]->max_length * multiply;
+  fix_char_length_ulonglong((ulonglong) args[0]->max_char_length() * multiply);
 }
 
 
@@ -1328,21 +1304,23 @@ String *Item_func_left::val_str(String *str)
 
 void Item_str_func::left_right_max_length()
 {
-  max_length=args[0]->max_length;
+  uint32 char_length= args[0]->max_char_length();
   if (args[1]->const_item())
   {
-    int length=(int) args[1]->val_int()*collation.collation->mbmaxlen;
+    int length= (int) args[1]->val_int();
     if (length <= 0)
-      max_length=0;
+      char_length=0;
     else
-      set_if_smaller(max_length,(uint) length);
+      set_if_smaller(char_length, (uint) length);
   }
+  fix_char_length(char_length);
 }
 
 
 void Item_func_left::fix_length_and_dec()
 {
   agg_arg_charsets_for_string_result(collation, args, 1);
+  DBUG_ASSERT(collation.collation != NULL);
   left_right_max_length();
 }
 
@@ -1376,6 +1354,7 @@ String *Item_func_right::val_str(String *str)
 void Item_func_right::fix_length_and_dec()
 {
   agg_arg_charsets_for_string_result(collation, args, 1);
+  DBUG_ASSERT(collation.collation != NULL);
   left_right_max_length();
 }
 
@@ -1432,6 +1411,7 @@ void Item_func_substr::fix_length_and_dec()
   max_length=args[0]->max_length;
 
   agg_arg_charsets_for_string_result(collation, args, 1);
+  DBUG_ASSERT(collation.collation != NULL);
   if (args[1]->const_item())
   {
     int32 start= (int32) args[1]->val_int();
@@ -1454,10 +1434,9 @@ void Item_func_substr::fix_length_and_dec()
 
 void Item_func_substr_index::fix_length_and_dec()
 { 
-  max_length= args[0]->max_length;
-
   if (agg_arg_charsets_for_comparison(collation, args, 2))
     return;
+  fix_char_length(args[0]->max_char_length());
 }
 
 
@@ -1783,10 +1762,10 @@ String *Item_func_trim::val_str(String *str)
 
 void Item_func_trim::fix_length_and_dec()
 {
-  max_length= args[0]->max_length;
   if (arg_count == 1)
   {
     agg_arg_charsets_for_string_result(collation, args, 1);
+    DBUG_ASSERT(collation.collation != NULL);
     remove.set_charset(collation.collation);
     remove.set_ascii(" ",1);
   }
@@ -1797,6 +1776,7 @@ void Item_func_trim::fix_length_and_dec()
     if (agg_arg_charsets_for_comparison(collation, &args[1], 2, -1))
       return;
   }
+  fix_char_length(args[0]->max_char_length());
 }
 
 void Item_func_trim::print(String *str, enum_query_type query_type)
@@ -2072,9 +2052,11 @@ bool Item_func_current_user::fix_fields(THD *thd, Item **ref)
 
 void Item_func_soundex::fix_length_and_dec()
 {
+  uint32 char_length= args[0]->max_char_length();
   agg_arg_charsets_for_string_result(collation, args, 1);
-  max_length=args[0]->max_length;
-  set_if_bigger(max_length, 4 * collation.collation->mbminlen);
+  DBUG_ASSERT(collation.collation != NULL);
+  set_if_bigger(char_length, 4);
+  fix_char_length(char_length);
   tmp_value.set_charset(collation.collation);
 }
 
@@ -2235,7 +2217,7 @@ const int FORMAT_MAX_DECIMALS= 30;
 MY_LOCALE *Item_func_format::get_locale(Item *item)
 {
   DBUG_ASSERT(arg_count == 3);
-  String tmp, *locale_name= args[2]->val_str(&tmp);
+  String tmp, *locale_name= args[2]->val_str_ascii(&tmp);
   MY_LOCALE *lc;
   if (!locale_name ||
       !(lc= my_locale_by_name(locale_name->c_ptr_safe())))
@@ -2251,11 +2233,10 @@ MY_LOCALE *Item_func_format::get_locale(Item *item)
 
 void Item_func_format::fix_length_and_dec()
 {
-  uint char_length= args[0]->max_length/args[0]->collation.collation->mbmaxlen;
-  uint max_sep_count= char_length/3 + (decimals ? 1 : 0) + /*sign*/1;
+  uint32 char_length= args[0]->max_char_length();
+  uint32 max_sep_count= (char_length / 3) + (decimals ? 1 : 0) + /*sign*/1;
   collation.set(default_charset());
-  max_length= (char_length + max_sep_count + decimals) *
-    collation.collation->mbmaxlen;
+  fix_char_length(char_length + max_sep_count + decimals);
   if (arg_count == 3)
     locale= args[2]->basic_const_item() ? get_locale(args[2]) : NULL;
   else
@@ -2269,7 +2250,7 @@ void Item_func_format::fix_length_and_dec()
   are stored in more than one byte
 */
 
-String *Item_func_format::val_str(String *str)
+String *Item_func_format::val_str_ascii(String *str)
 {
   uint32 str_length;
   /* Number of decimal digits */
@@ -2309,8 +2290,7 @@ String *Item_func_format::val_str(String *str)
     if ((null_value=args[0]->null_value))
       return 0; /* purecov: inspected */
     nr= my_double_round(nr, (longlong) dec, FALSE, FALSE);
-    /* Here default_charset() is right as this is not an automatic conversion */
-    str->set_real(nr, dec, default_charset());
+    str->set_real(nr, dec, &my_charset_numeric);
     if (isnan(nr))
       return str;
     str_length=str->length();
@@ -2360,6 +2340,14 @@ String *Item_func_format::val_str(String *str)
     /* Put the rest of the integer part without grouping */
     str->copy(dst, buf + sizeof(buf) - dst, &my_charset_latin1);
   }
+  else if (dec_length && lc->decimal_point != '.')
+  {
+    /*
+      For short values without thousands (<1000)
+      replace decimal point to localized value.
+    */
+    ((char*) str->ptr())[str_length - dec_length]= lc->decimal_point;
+  }
   return str;
 }
 
@@ -2375,7 +2363,7 @@ void Item_func_format::print(String *str, enum_query_type query_type)
 
 void Item_func_elt::fix_length_and_dec()
 {
-  max_length=0;
+  uint32 char_length= 0;
   decimals=0;
 
   if (agg_arg_charsets_for_string_result(collation, args + 1, arg_count - 1))
@@ -2383,9 +2371,10 @@ void Item_func_elt::fix_length_and_dec()
 
   for (uint i= 1 ; i < arg_count ; i++)
   {
-    set_if_bigger(max_length,args[i]->max_length);
+    set_if_bigger(char_length, args[i]->max_char_length());
     set_if_bigger(decimals,args[i]->decimals);
   }
+  fix_char_length(char_length);
   maybe_null=1;					// NULL if wrong first arg
 }
 
@@ -2443,14 +2432,14 @@ void Item_func_make_set::split_sum_func(THD *thd, Item **ref_pointer_array,
 
 void Item_func_make_set::fix_length_and_dec()
 {
-  max_length=arg_count-1;
+  uint32 char_length= arg_count - 1; /* Separators */
 
   if (agg_arg_charsets_for_string_result(collation, args, arg_count))
     return;
   
   for (uint i=0 ; i < arg_count ; i++)
-    max_length+=args[i]->max_length;
-
+    char_length+= args[i]->max_char_length();
+  fix_char_length(char_length);
   used_tables_cache|=	  item->used_tables();
   not_null_tables_cache&= item->not_null_tables();
   const_item_cache&=	  item->const_item();
@@ -2616,6 +2605,7 @@ inline String* alloc_buffer(String *res,String *str,String *tmp_value,
 void Item_func_repeat::fix_length_and_dec()
 {
   agg_arg_charsets_for_string_result(collation, args, 1);
+  DBUG_ASSERT(collation.collation != NULL);
   if (args[1]->const_item())
   {
     /* must be longlong to avoid truncation */
@@ -2626,13 +2616,8 @@ void Item_func_repeat::fix_length_and_dec()
     if (count > INT_MAX32)
       count= INT_MAX32;
 
-    ulonglong max_result_length= (ulonglong) args[0]->max_length * count;
-    if (max_result_length >= MAX_BLOB_WIDTH)
-    {
-      max_result_length= MAX_BLOB_WIDTH;
-      maybe_null= 1;
-    }
-    max_length= (ulong) max_result_length;
+    ulonglong char_length= (ulonglong) args[0]->max_char_length() * count;
+    fix_char_length_ulonglong(char_length);
   }
   else
   {
@@ -2703,26 +2688,13 @@ void Item_func_rpad::fix_length_and_dec()
     return;
   if (args[1]->const_item())
   {
-    ulonglong length= 0;
-
-    if (collation.collation->mbmaxlen > 0)
-    {
-      ulonglong temp= (ulonglong) args[1]->val_int();
-
-      /* Assumes that the maximum length of a String is < INT_MAX32. */
-      /* Set here so that rest of code sees out-of-bound value as such. */
-      if (temp > INT_MAX32)
-	temp = INT_MAX32;
-
-      length= temp * collation.collation->mbmaxlen;
-    }
-
-    if (length >= MAX_BLOB_WIDTH)
-    {
-      length= MAX_BLOB_WIDTH;
-      maybe_null= 1;
-    }
-    max_length= (ulong) length;
+    ulonglong char_length= (ulonglong) args[1]->val_int();
+    DBUG_ASSERT(collation.collation->mbmaxlen > 0);
+    /* Assumes that the maximum length of a String is < INT_MAX32. */
+    /* Set here so that rest of code sees out-of-bound value as such. */
+    if (char_length > INT_MAX32)
+      char_length= INT_MAX32;
+    fix_char_length_ulonglong(char_length);
   }
   else
   {
@@ -2806,26 +2778,13 @@ void Item_func_lpad::fix_length_and_dec()
   
   if (args[1]->const_item())
   {
-    ulonglong length= 0;
-
-    if (collation.collation->mbmaxlen > 0)
-    {
-      ulonglong temp= (ulonglong) args[1]->val_int();
-
-      /* Assumes that the maximum length of a String is < INT_MAX32. */
-      /* Set here so that rest of code sees out-of-bound value as such. */
-      if (temp > INT_MAX32)
-        temp= INT_MAX32;
-
-      length= temp * collation.collation->mbmaxlen;
-    }
-
-    if (length >= MAX_BLOB_WIDTH)
-    {
-      length= MAX_BLOB_WIDTH;
-      maybe_null= 1;
-    }
-    max_length= (ulong) length;
+    ulonglong char_length= (ulonglong) args[1]->val_int();
+    DBUG_ASSERT(collation.collation->mbmaxlen > 0);
+    /* Assumes that the maximum length of a String is < INT_MAX32. */
+    /* Set here so that rest of code sees out-of-bound value as such. */
+    if (char_length > INT_MAX32)
+      char_length= INT_MAX32;
+    fix_char_length_ulonglong(char_length);
   }
   else
   {
@@ -3081,7 +3040,7 @@ String *Item_func_collation::val_str(String *str)
 }
 
 
-String *Item_func_hex::val_str(String *str)
+String *Item_func_hex::val_str_ascii(String *str)
 {
   String *res;
   DBUG_ASSERT(fixed == 1);
@@ -3120,6 +3079,7 @@ String *Item_func_hex::val_str(String *str)
   }
   null_value=0;
   tmp_value.length(res->length()*2);
+  tmp_value.set_charset(&my_charset_latin1);
 
   octet2hex((char*) tmp_value.ptr(), res->ptr(), res->length());
   return &tmp_value;
@@ -3308,8 +3268,8 @@ String* Item_func_export_set::val_str(String* str)
 
 void Item_func_export_set::fix_length_and_dec()
 {
-  uint length=max(args[1]->max_length,args[2]->max_length);
-  uint sep_length=(arg_count > 3 ? args[3]->max_length : 1);
+  uint32 length= max(args[1]->max_char_length(), args[2]->max_char_length());
+  uint32 sep_length= (arg_count > 3 ? args[3]->max_char_length() : 1);
 
   if (agg_arg_charsets_for_string_result(collation,
                                          args + 1, min(4, arg_count) - 1))
diff --git a/sql/item_strfunc.h b/sql/item_strfunc.h
index df794ecaaf4..5dcef2e671f 100644
--- a/sql/item_strfunc.h
+++ b/sql/item_strfunc.h
@@ -539,17 +539,17 @@ public:
 };
 
 
-class Item_func_format :public Item_str_func
+class Item_func_format :public Item_str_ascii_func
 {
   String tmp_str;
   MY_LOCALE *locale;
 public:
-  Item_func_format(Item *org, Item *dec): Item_str_func(org, dec) {}
+  Item_func_format(Item *org, Item *dec): Item_str_ascii_func(org, dec) {}
   Item_func_format(Item *org, Item *dec, Item *lang):
-  Item_str_func(org, dec, lang) {}
+  Item_str_ascii_func(org, dec, lang) {}
   
   MY_LOCALE *get_locale(Item *item);
-  String *val_str(String *);
+  String *val_str_ascii(String *);
   void fix_length_and_dec();
   const char *func_name() const { return "format"; }
   virtual void print(String *str, enum_query_type query_type);
@@ -622,18 +622,18 @@ public:
 };
 
 
-class Item_func_hex :public Item_str_func
+class Item_func_hex :public Item_str_ascii_func
 {
   String tmp_value;
 public:
-  Item_func_hex(Item *a) :Item_str_func(a) {}
+  Item_func_hex(Item *a) :Item_str_ascii_func(a) {}
   const char *func_name() const { return "hex"; }
-  String *val_str(String *);
+  String *val_str_ascii(String *);
   void fix_length_and_dec()
   {
     collation.set(default_charset());
     decimals=0;
-    max_length=args[0]->max_length*2*collation.collation->mbmaxlen;
+    fix_char_length(args[0]->max_length * 2);
   }
 };
 
diff --git a/sql/item_sum.cc b/sql/item_sum.cc
index b05d845dead..b6e5d6d3182 100644
--- a/sql/item_sum.cc
+++ b/sql/item_sum.cc
@@ -434,26 +434,6 @@ void Item_sum::mark_as_sum_func()
 }
 
 
-void Item_sum::make_field(Send_field *tmp_field)
-{
-  if (args[0]->type() == Item::FIELD_ITEM && keep_field_type())
-  {
-    ((Item_field*) args[0])->field->make_field(tmp_field);
-    /* For expressions only col_name should be non-empty string. */
-    char *empty_string= (char*)"";
-    tmp_field->db_name= empty_string;
-    tmp_field->org_table_name= empty_string;
-    tmp_field->table_name= empty_string;
-    tmp_field->org_col_name= empty_string;
-    tmp_field->col_name= name;
-    if (maybe_null)
-      tmp_field->flags&= ~NOT_NULL_FLAG;
-  }
-  else
-    init_make_field(tmp_field, field_type());
-}
-
-
 void Item_sum::print(String *str, enum_query_type query_type)
 {
   /* orig_args is not filled with valid values until fix_fields() */
@@ -984,7 +964,8 @@ bool Aggregator_distinct::add()
   {
     int error;
     copy_fields(tmp_table_param);
-    copy_funcs(tmp_table_param->items_to_copy);
+    if (copy_funcs(tmp_table_param->items_to_copy, table->in_use))
+      return TRUE;
 
     for (Field **field=table->field ; *field ; field++)
       if ((*field)->is_real_null(0))
@@ -3058,7 +3039,6 @@ Item_func_group_concat::Item_func_group_concat(THD *thd,
   tree(item->tree),
   unique_filter(item->unique_filter),
   table(item->table),
-  order(item->order),
   context(item->context),
   arg_count_order(item->arg_count_order),
   arg_count_field(item->arg_count_field),
@@ -3071,6 +3051,24 @@ Item_func_group_concat::Item_func_group_concat(THD *thd,
 {
   quick_group= item->quick_group;
   result.set_charset(collation.collation);
+
+  /*
+    Since the ORDER structures pointed to by the elements of the 'order' array
+    may be modified in find_order_in_list() called from
+    Item_func_group_concat::setup(), create a copy of those structures so that
+    such modifications done in this object would not have any effect on the
+    object being copied.
+  */
+  ORDER *tmp;
+  if (!(order= (ORDER **) thd->alloc(sizeof(ORDER *) * arg_count_order +
+                                     sizeof(ORDER) * arg_count_order)))
+    return;
+  tmp= (ORDER *)(order + arg_count_order);
+  for (uint i= 0; i < arg_count_order; i++, tmp++)
+  {
+    memcpy(tmp, item->order[i], sizeof(ORDER));
+    order[i]= tmp;
+  }
 }
 
 
@@ -3136,7 +3134,8 @@ bool Item_func_group_concat::add()
   if (always_null)
     return 0;
   copy_fields(tmp_table_param);
-  copy_funcs(tmp_table_param->items_to_copy);
+  if (copy_funcs(tmp_table_param->items_to_copy, table->in_use))
+    return TRUE;
 
   for (uint i= 0; i < arg_count_field; i++)
   {
diff --git a/sql/item_sum.h b/sql/item_sum.h
index 2a722b93165..06a8c2c58a4 100644
--- a/sql/item_sum.h
+++ b/sql/item_sum.h
@@ -427,7 +427,6 @@ public:
     forced_const= TRUE; 
   }
   virtual bool const_item() const { return forced_const; }
-  void make_field(Send_field *field);
   virtual void print(String *str, enum_query_type query_type);
   void fix_num_length_and_dec();
 
diff --git a/sql/lock.cc b/sql/lock.cc
index 1a77b576e67..0181a544824 100644
--- a/sql/lock.cc
+++ b/sql/lock.cc
@@ -1298,27 +1298,19 @@ bool Global_read_lock::make_global_read_lock_block_commit(THD *thd)
 
 
 /**
-  Broadcast COND_refresh and COND_global_read_lock.
-
-    Due to a bug in a threading library it could happen that a signal
-    did not reach its target. A condition for this was that the same
-    condition variable was used with different mutexes in
-    mysql_cond_wait(). Some time ago we changed LOCK_open to
-    LOCK_global_read_lock in global read lock handling. So COND_refresh
-    was used with LOCK_open and LOCK_global_read_lock.
-
-    We did now also change from COND_refresh to COND_global_read_lock
-    in global read lock handling. But now it is necessary to signal
-    both conditions at the same time.
-
-  @note
-    When signalling COND_global_read_lock within the global read lock
-    handling, it is not necessary to also signal COND_refresh.
+  Broadcast COND_global_read_lock.
+
+  TODO/FIXME: Dmitry thinks that we broadcast on COND_global_read_lock
+              when old instance of table is closed to avoid races
+              between incrementing refresh_version and
+              wait_if_global_read_lock(thd, TRUE, FALSE) call.
+              Once global read lock implementation starts using MDL
+              infrastructure this will became unnecessary and should
+              be removed.
 */
 
 void broadcast_refresh(void)
 {
-  mysql_cond_broadcast(&COND_refresh);
   mysql_cond_broadcast(&COND_global_read_lock);
 }
 
diff --git a/sql/lock.h b/sql/lock.h
index 0083dd3ba18..c097c8d269e 100644
--- a/sql/lock.h
+++ b/sql/lock.h
@@ -9,48 +9,6 @@ struct TABLE_LIST;
 class THD;
 typedef struct st_mysql_lock MYSQL_LOCK;
 
-/* mysql_lock_tables() and open_table() flags bits */
-#define MYSQL_OPEN_IGNORE_GLOBAL_READ_LOCK      0x0001
-#define MYSQL_OPEN_IGNORE_FLUSH                 0x0002
-#define MYSQL_OPEN_TEMPORARY_ONLY               0x0004
-#define MYSQL_LOCK_IGNORE_GLOBAL_READ_ONLY      0x0008
-#define MYSQL_LOCK_LOG_TABLE                    0x0010
-/**
-  Do not try to acquire a metadata lock on the table: we
-  already have one.
-*/
-#define MYSQL_OPEN_HAS_MDL_LOCK                 0x0020
-/**
-  If in locked tables mode, ignore the locked tables and get
-  a new instance of the table.
-*/
-#define MYSQL_OPEN_GET_NEW_TABLE                0x0040
-/** Don't look up the table in the list of temporary tables. */
-#define MYSQL_OPEN_SKIP_TEMPORARY               0x0080
-/** Fail instead of waiting when conficting metadata lock is discovered. */
-#define MYSQL_OPEN_FAIL_ON_MDL_CONFLICT         0x0100
-/** Open tables using MDL_SHARED lock instead of one specified in parser. */
-#define MYSQL_OPEN_FORCE_SHARED_MDL             0x0200
-/**
-  Open tables using MDL_SHARED_HIGH_PRIO lock instead of one specified
-  in parser.
-*/
-#define MYSQL_OPEN_FORCE_SHARED_HIGH_PRIO_MDL   0x0400
-/**
-  When opening or locking the table, use the maximum timeout
-  (LONG_TIMEOUT = 1 year) rather than the user-supplied timeout value.
-*/
-#define MYSQL_LOCK_IGNORE_TIMEOUT               0x0800
-
-/** Please refer to the internals manual. */
-#define MYSQL_OPEN_REOPEN  (MYSQL_OPEN_IGNORE_FLUSH |\
-                            MYSQL_OPEN_IGNORE_GLOBAL_READ_LOCK |\
-                            MYSQL_LOCK_IGNORE_GLOBAL_READ_ONLY |\
-                            MYSQL_LOCK_IGNORE_TIMEOUT |\
-                            MYSQL_OPEN_GET_NEW_TABLE |\
-                            MYSQL_OPEN_SKIP_TEMPORARY |\
-                            MYSQL_OPEN_HAS_MDL_LOCK)
-
 
 MYSQL_LOCK *mysql_lock_tables(THD *thd, TABLE **table, uint count, uint flags);
 void mysql_unlock_tables(THD *thd, MYSQL_LOCK *sql_lock);
diff --git a/sql/log.cc b/sql/log.cc
index 86f8100be07..88352706318 100644
--- a/sql/log.cc
+++ b/sql/log.cc
@@ -4272,7 +4272,7 @@ bool use_trans_cache(const THD* thd, bool is_transactional)
     (binlog_cache_mngr*) thd_get_ha_data(thd, binlog_hton);
 
   return
-    ((thd->variables.binlog_format != BINLOG_FORMAT_STMT ||
+    ((thd->is_current_stmt_binlog_format_row() ||
      thd->variables.binlog_direct_non_trans_update) ? is_transactional :
      (is_transactional || !cache_mngr->trx_cache.empty()));
 }
@@ -5447,70 +5447,93 @@ void sql_perror(const char *message)
 }
 
 
+#ifdef __WIN__
+extern "C" my_bool reopen_fstreams(const char *filename,
+                                   FILE *outstream, FILE *errstream)
+{
+  int handle_fd;
+  int stream_fd;
+  HANDLE osfh;
+
+  DBUG_ASSERT(filename && (outstream || errstream));
+
+  if ((osfh= CreateFile(filename, GENERIC_READ | GENERIC_WRITE,
+                        FILE_SHARE_READ | FILE_SHARE_WRITE |
+                        FILE_SHARE_DELETE, NULL,
+                        OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL,
+                        NULL)) == INVALID_HANDLE_VALUE)
+    return TRUE;
+
+  if ((handle_fd= _open_osfhandle((intptr_t)osfh,
+                                  _O_APPEND | _O_TEXT)) == -1)
+  {
+    CloseHandle(osfh);
+    return TRUE;
+  }
+
+  if (outstream)
+  {
+    stream_fd= _fileno(outstream);
+    if (_dup2(handle_fd, stream_fd) < 0)
+    {
+      CloseHandle(osfh);
+      return TRUE;
+    }
+  }
+
+  if (errstream)
+  {
+    stream_fd= _fileno(errstream);
+    if (_dup2(handle_fd, stream_fd) < 0)
+    {
+      CloseHandle(osfh);
+      return TRUE;
+    }
+  }
+
+  _close(handle_fd);
+  return FALSE;
+}
+#else
+extern "C" my_bool reopen_fstreams(const char *filename,
+                                   FILE *outstream, FILE *errstream)
+{
+  if (outstream && !freopen(filename, "a+", outstream))
+    return TRUE;
+
+  if (errstream && !freopen(filename, "a+", errstream))
+    return TRUE;
+
+  return FALSE;
+}
+#endif
+
+
 /*
   Unfortunately, there seems to be no good way
   to restore the original streams upon failure.
 */
 static bool redirect_std_streams(const char *file)
 {
-  if (freopen(file, "a+", stdout) && freopen(file, "a+", stderr))
-  {
-    setbuf(stderr, NULL);
-    return FALSE;
-  }
+  if (reopen_fstreams(file, stdout, stderr))
+    return TRUE;
 
-  return TRUE;
+  setbuf(stderr, NULL);
+  return FALSE;
 }
 
 
 bool flush_error_log()
 {
-  bool result=0;
+  bool result= 0;
   if (opt_error_log)
   {
-    char err_renamed[FN_REFLEN], *end;
-    end= strmake(err_renamed,log_error_file,FN_REFLEN-5);
-    strmov(end, "-old");
     mysql_mutex_lock(&LOCK_error_log);
-#ifdef __WIN__
-    char err_temp[FN_REFLEN+5];
-    /*
-     On Windows is necessary a temporary file for to rename
-     the current error file.
-    */
-    strxmov(err_temp, err_renamed,"-tmp",NullS);
-    my_delete(err_temp, MYF(0));
-    if (freopen(err_temp,"a+",stdout))
-    {
-      int fd;
-      size_t bytes;
-      uchar buf[IO_SIZE];
-
-      freopen(err_temp,"a+",stderr);
-      setbuf(stderr, NULL);
-      my_delete(err_renamed, MYF(0));
-      my_rename(log_error_file, err_renamed, MYF(0));
-      redirect_std_streams(log_error_file);
-
-      if ((fd= my_open(err_temp, O_RDONLY, MYF(0))) >= 0)
-      {
-        while ((bytes= mysql_file_read(fd, buf, IO_SIZE, MYF(0))) &&
-               bytes != MY_FILE_ERROR)
-          my_fwrite(stderr, buf, bytes, MYF(0));
-        mysql_file_close(fd, MYF(0));
-      }
-      my_delete(err_temp, MYF(0));
-    }
-    else
-     result= 1;
-#else
-   my_rename(log_error_file, err_renamed, MYF(0));
-   if (redirect_std_streams(log_error_file))
-     result= 1;
-#endif
+    if (redirect_std_streams(log_error_file))
+      result= 1;
     mysql_mutex_unlock(&LOCK_error_log);
   }
-   return result;
+  return result;
 }
 
 void MYSQL_BIN_LOG::signal_update()
diff --git a/sql/log.h b/sql/log.h
index 6e87b6cbade..ebb23deda81 100644
--- a/sql/log.h
+++ b/sql/log.h
@@ -394,10 +394,10 @@ public:
   /* Use this to start writing a new log file */
   void new_file();
 
-  bool write(Log_event* event_info);
+  bool write(Log_event* event_info); // binary log write
   bool write(THD *thd, IO_CACHE *cache, Log_event *commit_event, bool incident);
-  bool write_incident(THD *thd, bool lock);
 
+  bool write_incident(THD *thd, bool lock);
   int  write_cache(IO_CACHE *cache, bool lock_log, bool flush_and_sync);
   void set_write_error(THD *thd);
   bool check_write_error(THD *thd);
diff --git a/sql/log_event.cc b/sql/log_event.cc
index d224f555cf2..16290c58685 100644
--- a/sql/log_event.cc
+++ b/sql/log_event.cc
@@ -674,15 +674,16 @@ const char* Log_event::get_type_str()
 
 #ifndef MYSQL_CLIENT
 Log_event::Log_event(THD* thd_arg, uint16 flags_arg, bool using_trans)
-  :log_pos(0), temp_buf(0), exec_time(0), flags(flags_arg), thd(thd_arg)
+  :log_pos(0), temp_buf(0), exec_time(0), flags(flags_arg),
+  cache_type(Log_event::EVENT_INVALID_CACHE), thd(thd_arg)
 {
   server_id=	thd->server_id;
   when=		thd->start_time;
-  cache_type= ((using_trans || stmt_has_updated_trans_table(thd) ||
-               (thd->lex->stmt_accessed_temp_table() &&
-               trans_has_updated_trans_table(thd)))
-               ? Log_event::EVENT_TRANSACTIONAL_CACHE :
-               Log_event::EVENT_STMT_CACHE);
+
+  if (using_trans)
+    cache_type= Log_event::EVENT_TRANSACTIONAL_CACHE;
+  else
+    cache_type= Log_event::EVENT_STMT_CACHE;
 }
 
 /**
@@ -2520,21 +2521,18 @@ Query_log_event::Query_log_event(THD* thd_arg, const char* query_arg,
 
   LEX *lex= thd->lex;
   /*
-    TRUE defines that either a trx-cache or stmt-cache must be used
-    and wrapped by a BEGIN...COMMIT. Otherwise, the statement will
-    be written directly to the binary log without being wrapped by
-    a BEGIN...COMMIT.
+    Defines that the statement will be written directly to the binary log
+    without being wrapped by a BEGIN...COMMIT. Otherwise, the statement
+    will be written to either the trx-cache or stmt-cache.
 
-    Note that a cache will not be used if the parameter direct is
-    TRUE.
+    Note that a cache will not be used if the parameter direct is TRUE.
   */
   bool use_cache= FALSE;
   /*
-    TRUE defines that the trx-cache must be used and by consequence
-    the use_cache is TRUE.
+    TRUE defines that the trx-cache must be used and by consequence the
+    use_cache is TRUE.
 
-    Note that a cache will not be used if the parameter direct is
-    TRUE.
+    Note that a cache will not be used if the parameter direct is TRUE.
   */
   bool trx_cache= FALSE;
   cache_type= Log_event::EVENT_INVALID_CACHE;
@@ -2542,16 +2540,14 @@ Query_log_event::Query_log_event(THD* thd_arg, const char* query_arg,
   switch (lex->sql_command)
   {
     case SQLCOM_DROP_TABLE:
-      use_cache= trx_cache= (lex->drop_temporary &&
-                            thd->in_multi_stmt_transaction_mode());
+      use_cache= (lex->drop_temporary && thd->in_multi_stmt_transaction_mode());
     break;
 
     case SQLCOM_CREATE_TABLE:
-      use_cache= trx_cache=
-                 ((lex->create_info.options & HA_LEX_CREATE_TMP_TABLE) &&
-                   thd->in_multi_stmt_transaction_mode()) ||
-                 (lex->select_lex.item_list.elements &&
+      trx_cache= (lex->select_lex.item_list.elements &&
                   thd->is_current_stmt_binlog_format_row());
+      use_cache= ((lex->create_info.options & HA_LEX_CREATE_TMP_TABLE) &&
+                   thd->in_multi_stmt_transaction_mode()) || trx_cache;
       break;
     case SQLCOM_SET_OPTION:
       use_cache= trx_cache= (lex->autocommit ? FALSE : TRUE);
@@ -2570,14 +2566,14 @@ Query_log_event::Query_log_event(THD* thd_arg, const char* query_arg,
   {
     cache_type= Log_event::EVENT_NO_CACHE;
   }
+  else if (using_trans || trx_cache || stmt_has_updated_trans_table(thd) ||
+           thd->lex->is_mixed_stmt_unsafe(thd->in_multi_stmt_transaction_mode(),
+                                          thd->variables.binlog_direct_non_trans_update,
+                                          trans_has_updated_trans_table(thd),
+                                          thd->tx_isolation))
+    cache_type= Log_event::EVENT_TRANSACTIONAL_CACHE;
   else
-  {
-    cache_type= ((using_trans || stmt_has_updated_trans_table(thd) || trx_cache ||
-                 (thd->lex->stmt_accessed_temp_table() &&
-                 trans_has_updated_trans_table(thd)))
-                 ? Log_event::EVENT_TRANSACTIONAL_CACHE :
-                 Log_event::EVENT_STMT_CACHE);
-  }
+    cache_type= Log_event::EVENT_STMT_CACHE;
   DBUG_ASSERT(cache_type != Log_event::EVENT_INVALID_CACHE);
   DBUG_PRINT("info",("Query_log_event has flags2: %lu  sql_mode: %lu",
                      (ulong) flags2, sql_mode));
diff --git a/sql/mdl.cc b/sql/mdl.cc
index ca66799baed..d53ddcee0c8 100644
--- a/sql/mdl.cc
+++ b/sql/mdl.cc
@@ -71,6 +71,21 @@ static void init_mdl_psi_keys(void)
 void notify_shared_lock(THD *thd, MDL_ticket *conflicting_ticket);
 
 
+/**
+  Thread state names to be used in case when we have to wait on resource
+  belonging to certain namespace.
+*/
+
+const char *MDL_key::m_namespace_to_wait_state_name[NAMESPACE_END]=
+{
+  "Waiting for global metadata lock",
+  "Waiting for schema metadata lock",
+  "Waiting for table metadata lock",
+  "Waiting for stored function metadata lock",
+  "Waiting for stored procedure metadata lock",
+  NULL
+};
+
 static bool mdl_initialized= 0;
 
 
@@ -98,38 +113,32 @@ private:
 };
 
 
-enum enum_deadlock_weight
-{
-  MDL_DEADLOCK_WEIGHT_DML= 0,
-  MDL_DEADLOCK_WEIGHT_DDL= 100
-};
-
-
 /**
   A context of the recursive traversal through all contexts
   in all sessions in search for deadlock.
 */
 
-class Deadlock_detection_visitor
+class Deadlock_detection_visitor: public MDL_wait_for_graph_visitor
 {
 public:
   Deadlock_detection_visitor(MDL_context *start_node_arg)
     : m_start_node(start_node_arg),
       m_victim(NULL),
-      m_current_search_depth(0)
+      m_current_search_depth(0),
+      m_found_deadlock(FALSE)
   {}
-  bool enter_node(MDL_context * /* unused */);
-  void leave_node(MDL_context * /* unused */);
+  virtual bool enter_node(MDL_context *node);
+  virtual void leave_node(MDL_context *node);
 
-  bool inspect_edge(MDL_context *dest);
+  virtual bool inspect_edge(MDL_context *dest);
 
   MDL_context *get_victim() const { return m_victim; }
-
+private:
   /**
     Change the deadlock victim to a new one if it has lower deadlock
     weight.
   */
-  MDL_context *opt_change_victim_to(MDL_context *new_victim);
+  void opt_change_victim_to(MDL_context *new_victim);
 private:
   /**
     The context which has initiated the search. There
@@ -145,6 +154,8 @@ private:
     loop.
   */
   uint m_current_search_depth;
+  /** TRUE if we found a deadlock. */
+  bool m_found_deadlock;
   /**
     Maximum depth for deadlock searches. After this depth is
     achieved we will unconditionally declare that there is a
@@ -167,29 +178,38 @@ private:
   a node is entered, inspect_edge() will be called
   for all wait-for destinations of this node. Then
   leave_node() will be called.
-  We call "enter_node()" for all nodes we inspect, 
+  We call "enter_node()" for all nodes we inspect,
   including the starting node.
 
   @retval  TRUE  Maximum search depth exceeded.
   @retval  FALSE OK.
 */
 
-bool Deadlock_detection_visitor::enter_node(MDL_context * /* unused */)
+bool Deadlock_detection_visitor::enter_node(MDL_context *node)
 {
-  if (++m_current_search_depth >= MAX_SEARCH_DEPTH)
-    return TRUE;
-  return FALSE;
+  m_found_deadlock= ++m_current_search_depth >= MAX_SEARCH_DEPTH;
+  if (m_found_deadlock)
+  {
+    DBUG_ASSERT(! m_victim);
+    opt_change_victim_to(node);
+  }
+  return m_found_deadlock;
 }
 
 
 /**
   Done inspecting this node. Decrease the search
-  depth. Clear the node for debug safety.
+  depth. If a deadlock is found, and we are
+  backtracking to the start node, optionally
+  change the deadlock victim to one with lower
+  deadlock weight.
 */
 
-void Deadlock_detection_visitor::leave_node(MDL_context * /* unused */)
+void Deadlock_detection_visitor::leave_node(MDL_context *node)
 {
   --m_current_search_depth;
+  if (m_found_deadlock)
+    opt_change_victim_to(node);
 }
 
 
@@ -202,7 +222,8 @@ void Deadlock_detection_visitor::leave_node(MDL_context * /* unused */)
 
 bool Deadlock_detection_visitor::inspect_edge(MDL_context *node)
 {
-  return node == m_start_node;
+  m_found_deadlock= node == m_start_node;
+  return m_found_deadlock;
 }
 
 
@@ -214,7 +235,7 @@ bool Deadlock_detection_visitor::inspect_edge(MDL_context *node)
   @retval !new_victim New victim became the current.
 */
 
-MDL_context *
+void
 Deadlock_detection_visitor::opt_change_victim_to(MDL_context *new_victim)
 {
   if (m_victim == NULL ||
@@ -223,10 +244,10 @@ Deadlock_detection_visitor::opt_change_victim_to(MDL_context *new_victim)
     /* Swap victims, unlock the old one. */
     MDL_context *tmp= m_victim;
     m_victim= new_victim;
-    return tmp;
+    m_victim->lock_deadlock_victim();
+    if (tmp)
+      tmp->unlock_deadlock_victim();
   }
-  /* No change, unlock the current context. */
-  return new_victim;
 }
 
 
@@ -349,8 +370,8 @@ public:
 
   void remove_ticket(Ticket_list MDL_lock::*queue, MDL_ticket *ticket);
 
-  bool find_deadlock(MDL_ticket *waiting_ticket,
-                     Deadlock_detection_visitor *dvisitor);
+  bool visit_subgraph(MDL_ticket *waiting_ticket,
+                      MDL_wait_for_graph_visitor *gvisitor);
 
   /** List of granted tickets for this lock. */
   Ticket_list m_granted;
@@ -479,14 +500,6 @@ mdl_locks_key(const uchar *record, size_t *length,
   the associated condition variable: LOCK_mdl and COND_mdl.
   These locking primitives are implementation details of the MDL
   subsystem and are private to it.
-
-  Note, that even though the new implementation adds acquisition
-  of a new global mutex to the execution flow of almost every SQL
-  statement, the design capitalizes on that to later save on
-  look ups in the table definition cache. This leads to reduced
-  contention overall and on LOCK_open in particular.
-  Please see the description of MDL_context::acquire_lock()
-  for details.
 */
 
 void mdl_init()
@@ -876,8 +889,8 @@ void MDL_ticket::destroy(MDL_ticket *ticket)
 uint MDL_ticket::get_deadlock_weight() const
 {
   return (m_lock->key.mdl_namespace() == MDL_key::GLOBAL ||
-          m_type > MDL_SHARED_NO_WRITE ?
-          MDL_DEADLOCK_WEIGHT_DDL : MDL_DEADLOCK_WEIGHT_DML);
+          m_type >= MDL_SHARED_NO_WRITE ?
+          DEADLOCK_WEIGHT_DDL : DEADLOCK_WEIGHT_DML);
 }
 
 
@@ -946,17 +959,18 @@ void MDL_wait::reset_status()
   Wait for the status to be assigned to this wait slot.
 
   @param abs_timeout     Absolute time after which waiting should stop.
-  @param set_status_on_tiemout TRUE  - If in case of timeout waiting
-                                 context should close the wait slot by
-                                 sending TIMEOUT to itself.
-                         FALSE - Otherwise.
+  @param set_status_on_timeout TRUE  - If in case of timeout waiting
+                                       context should close the wait slot by
+                                       sending TIMEOUT to itself.
+                               FALSE - Otherwise.
+  @param wait_state_name  Thread state name to be set for duration of wait.
 
   @returns Signal posted.
 */
 
 MDL_wait::enum_wait_status
 MDL_wait::timed_wait(THD *thd, struct timespec *abs_timeout,
-                     bool set_status_on_timeout)
+                     bool set_status_on_timeout, const char *wait_state_name)
 {
   const char *old_msg;
   enum_wait_status result;
@@ -965,7 +979,7 @@ MDL_wait::timed_wait(THD *thd, struct timespec *abs_timeout,
   mysql_mutex_lock(&m_LOCK_wait_status);
 
   old_msg= thd_enter_cond(thd, &m_COND_wait_status, &m_LOCK_wait_status,
-                          "Waiting for table");
+                          wait_state_name);
 
   while (!m_wait_status && !thd_killed(thd) &&
          wait_result != ETIMEDOUT && wait_result != ETIME)
@@ -1380,6 +1394,15 @@ bool MDL_lock::has_pending_conflicting_lock(enum_mdl_type type)
 }
 
 
+MDL_wait_for_graph_visitor::~MDL_wait_for_graph_visitor()
+{
+}
+
+
+MDL_wait_for_subgraph::~MDL_wait_for_subgraph()
+{
+}
+
 /**
   Check if ticket represents metadata lock of "stronger" or equal type
   than specified one. I.e. if metadata lock represented by ticket won't
@@ -1528,9 +1551,8 @@ MDL_context::try_acquire_lock_impl(MDL_request *mdl_request,
   MDL_ticket *ticket;
   bool is_transactional;
 
-  DBUG_ASSERT(mdl_request->type < MDL_SHARED_NO_WRITE ||
-              (is_lock_owner(MDL_key::GLOBAL, "", "",
-                             MDL_INTENTION_EXCLUSIVE)));
+  DBUG_ASSERT(mdl_request->type != MDL_EXCLUSIVE ||
+              is_lock_owner(MDL_key::GLOBAL, "", "", MDL_INTENTION_EXCLUSIVE));
   DBUG_ASSERT(mdl_request->ticket == NULL);
 
   /* Don't take chances in production. */
@@ -1746,7 +1768,8 @@ MDL_context::acquire_lock(MDL_request *mdl_request, ulong lock_wait_timeout)
     while (cmp_timespec(abs_shortwait, abs_timeout) <= 0)
     {
       /* abs_timeout is far away. Wait a short while and notify locks. */
-      wait_status= m_wait.timed_wait(m_thd, &abs_shortwait, FALSE);
+      wait_status= m_wait.timed_wait(m_thd, &abs_shortwait, FALSE,
+                                     mdl_request->key.get_wait_state_name());
 
       if (wait_status != MDL_wait::EMPTY)
         break;
@@ -1757,10 +1780,12 @@ MDL_context::acquire_lock(MDL_request *mdl_request, ulong lock_wait_timeout)
       set_timespec(abs_shortwait, 1);
     }
     if (wait_status == MDL_wait::EMPTY)
-      wait_status= m_wait.timed_wait(m_thd, &abs_timeout, TRUE);
+      wait_status= m_wait.timed_wait(m_thd, &abs_timeout, TRUE,
+                                     mdl_request->key.get_wait_state_name());
   }
   else
-    wait_status= m_wait.timed_wait(m_thd, &abs_timeout, TRUE);
+    wait_status= m_wait.timed_wait(m_thd, &abs_timeout, TRUE,
+                                   mdl_request->key.get_wait_state_name());
 
   done_waiting_for();
 
@@ -1952,8 +1977,17 @@ MDL_context::upgrade_shared_lock_to_exclusive(MDL_ticket *mdl_ticket,
 }
 
 
-bool MDL_lock::find_deadlock(MDL_ticket *waiting_ticket,
-                             Deadlock_detection_visitor *dvisitor)
+/**
+  A fragment of recursive traversal of the wait-for graph
+  in search for deadlocks. Direct the deadlock visitor to all
+  contexts that own the lock the current node in the wait-for
+  graph is waiting for.
+  As long as the initial node is remembered in the visitor,
+  a deadlock is found when the same node is seen twice.
+*/
+
+bool MDL_lock::visit_subgraph(MDL_ticket *waiting_ticket,
+                              MDL_wait_for_graph_visitor *gvisitor)
 {
   MDL_ticket *ticket;
   MDL_context *src_ctx= waiting_ticket->get_ctx();
@@ -2022,7 +2056,7 @@ bool MDL_lock::find_deadlock(MDL_ticket *waiting_ticket,
     are visiting it but this is OK: in the worst case we might do some
     extra work and one more context might be chosen as a victim.
   */
-  if (dvisitor->enter_node(src_ctx))
+  if (gvisitor->enter_node(src_ctx))
     goto end;
 
   /*
@@ -2036,7 +2070,7 @@ bool MDL_lock::find_deadlock(MDL_ticket *waiting_ticket,
     /* Filter out edges that point to the same node. */
     if (ticket->get_ctx() != src_ctx &&
         ticket->is_incompatible_when_granted(waiting_ticket->get_type()) &&
-        dvisitor->inspect_edge(ticket->get_ctx()))
+        gvisitor->inspect_edge(ticket->get_ctx()))
     {
       goto end_leave_node;
     }
@@ -2047,7 +2081,7 @@ bool MDL_lock::find_deadlock(MDL_ticket *waiting_ticket,
     /* Filter out edges that point to the same node. */
     if (ticket->get_ctx() != src_ctx &&
         ticket->is_incompatible_when_waiting(waiting_ticket->get_type()) &&
-        dvisitor->inspect_edge(ticket->get_ctx()))
+        gvisitor->inspect_edge(ticket->get_ctx()))
     {
       goto end_leave_node;
     }
@@ -2059,7 +2093,7 @@ bool MDL_lock::find_deadlock(MDL_ticket *waiting_ticket,
   {
     if (ticket->get_ctx() != src_ctx &&
         ticket->is_incompatible_when_granted(waiting_ticket->get_type()) &&
-        ticket->get_ctx()->find_deadlock(dvisitor))
+        ticket->get_ctx()->visit_subgraph(gvisitor))
     {
       goto end_leave_node;
     }
@@ -2070,7 +2104,7 @@ bool MDL_lock::find_deadlock(MDL_ticket *waiting_ticket,
   {
     if (ticket->get_ctx() != src_ctx &&
         ticket->is_incompatible_when_waiting(waiting_ticket->get_type()) &&
-        ticket->get_ctx()->find_deadlock(dvisitor))
+        ticket->get_ctx()->visit_subgraph(gvisitor))
     {
       goto end_leave_node;
     }
@@ -2079,7 +2113,7 @@ bool MDL_lock::find_deadlock(MDL_ticket *waiting_ticket,
   result= FALSE;
 
 end_leave_node:
-  dvisitor->leave_node(src_ctx);
+  gvisitor->leave_node(src_ctx);
 
 end:
   mysql_prlock_unlock(&m_rwlock);
@@ -2088,35 +2122,47 @@ end:
 
 
 /**
-  Recursively traverse the wait-for graph of MDL contexts
-  in search for deadlocks.
+  Traverse a portion of wait-for graph which is reachable
+  through the edge represented by this ticket and search
+  for deadlocks.
 
-  @retval TRUE  A deadlock is found. A victim is remembered
-                by the visitor.
+  @retval TRUE  A deadlock is found. A pointer to deadlock
+                 victim is saved in the visitor.
   @retval FALSE
 */
 
-bool MDL_context::find_deadlock(Deadlock_detection_visitor *dvisitor)
+bool MDL_ticket::accept_visitor(MDL_wait_for_graph_visitor *gvisitor)
+{
+  return m_lock->visit_subgraph(this, gvisitor);
+}
+
+
+/**
+  A fragment of recursive traversal of the wait-for graph of
+  MDL contexts in the server in search for deadlocks.
+  Assume this MDL context is a node in the wait-for graph,
+  and direct the visitor to all adjacent nodes. As long
+  as the starting node is remembered in the visitor, a
+  deadlock is found when the same node is visited twice.
+  One MDL context is connected to another in the wait-for
+  graph if it waits on a resource that is held by the other
+  context.
+
+  @retval TRUE  A deadlock is found. A pointer to deadlock
+                victim is saved in the visitor.
+  @retval FALSE
+*/
+
+bool MDL_context::visit_subgraph(MDL_wait_for_graph_visitor *gvisitor)
 {
-  MDL_context *m_unlock_ctx= this;
   bool result= FALSE;
 
   mysql_prlock_rdlock(&m_LOCK_waiting_for);
 
   if (m_waiting_for)
-  {
-    result= m_waiting_for->m_lock->find_deadlock(m_waiting_for, dvisitor);
-    if (result)
-      m_unlock_ctx= dvisitor->opt_change_victim_to(this);
-  }
-  /*
-    We may recurse into the same MDL_context more than once
-    in case this is not the starting node. Make sure we release the
-    read lock as it's been taken, except for 1 read lock for
-    the deadlock victim.
-  */
-  if (m_unlock_ctx)
-    mysql_prlock_unlock(&m_unlock_ctx->m_LOCK_waiting_for);
+    result= m_waiting_for->accept_visitor(gvisitor);
+
+  mysql_prlock_unlock(&m_LOCK_waiting_for);
 
   return result;
 }
@@ -2138,14 +2184,14 @@ void MDL_context::find_deadlock()
   while (1)
   {
     /*
-      The fact that we use fresh instance of dvisitor for each
+      The fact that we use fresh instance of gvisitor for each
       search performed by find_deadlock() below is important,
       the code responsible for victim selection relies on this.
     */
     Deadlock_detection_visitor dvisitor(this);
     MDL_context *victim;
 
-    if (! find_deadlock(&dvisitor))
+    if (! visit_subgraph(&dvisitor))
     {
       /* No deadlocks are found! */
       break;
@@ -2166,7 +2212,7 @@ void MDL_context::find_deadlock()
       context was waiting is concurrently satisfied.
     */
     (void) victim->m_wait.set_status(MDL_wait::VICTIM);
-    mysql_prlock_unlock(&victim->m_LOCK_waiting_for);
+    victim->unlock_deadlock_victim();
 
     if (victim == this)
       break;
diff --git a/sql/mdl.h b/sql/mdl.h
index c8acd69c0f1..7938d833eac 100644
--- a/sql/mdl.h
+++ b/sql/mdl.h
@@ -34,7 +34,6 @@ class THD;
 class MDL_context;
 class MDL_lock;
 class MDL_ticket;
-class Deadlock_detection_visitor;
 
 /**
   Type of metadata lock request.
@@ -184,7 +183,9 @@ public:
                             TABLE,
                             FUNCTION,
                             PROCEDURE,
-                            TRIGGER };
+                            TRIGGER,
+                            /* This should be the last ! */
+                            NAMESPACE_END };
 
   const uchar *ptr() const { return (uchar*) m_ptr; }
   uint length() const { return m_length; }
@@ -251,10 +252,20 @@ public:
   }
   MDL_key() {} /* To use when part of MDL_request. */
 
+  /**
+    Get thread state name to be used in case when we have to
+    wait on resource identified by key.
+  */
+  const char * get_wait_state_name() const
+  {
+    return m_namespace_to_wait_state_name[(int)mdl_namespace()];
+  }
+
 private:
   uint16 m_length;
   uint16 m_db_name_length;
   char m_ptr[MAX_MDLKEY_LENGTH];
+  static const char * m_namespace_to_wait_state_name[NAMESPACE_END];
 private:
   MDL_key(const MDL_key &);                     /* not implemented */
   MDL_key &operator=(const MDL_key &);          /* not implemented */
@@ -360,6 +371,59 @@ public:
 
 typedef void (*mdl_cached_object_release_hook)(void *);
 
+
+/**
+  An abstract class for inspection of a connected
+  subgraph of the wait-for graph.
+*/
+
+class MDL_wait_for_graph_visitor
+{
+public:
+  virtual bool enter_node(MDL_context *node) = 0;
+  virtual void leave_node(MDL_context *node) = 0;
+
+  virtual bool inspect_edge(MDL_context *dest) = 0;
+  virtual ~MDL_wait_for_graph_visitor();
+  MDL_wait_for_graph_visitor() :m_lock_open_count(0) {}
+public:
+  /**
+   XXX, hack: During deadlock search, we may need to
+   inspect TABLE_SHAREs and acquire LOCK_open. Since
+   LOCK_open is not a recursive mutex, count here how many
+   times we "took" it (but only take and release once).
+   Not using a native recursive mutex or rwlock in 5.5 for
+   LOCK_open since it has significant performance impacts.
+  */
+  uint m_lock_open_count;
+};
+
+/**
+  Abstract class representing an edge in the waiters graph
+  to be traversed by deadlock detection algorithm.
+*/
+
+class MDL_wait_for_subgraph
+{
+public:
+  virtual ~MDL_wait_for_subgraph();
+
+  /**
+    Accept a wait-for graph visitor to inspect the node
+    this edge is leading to.
+  */
+  virtual bool accept_visitor(MDL_wait_for_graph_visitor *gvisitor) = 0;
+
+  enum enum_deadlock_weight
+  {
+    DEADLOCK_WEIGHT_DML= 0,
+    DEADLOCK_WEIGHT_DDL= 100
+  };
+  /* A helper used to determine which lock request should be aborted. */
+  virtual uint get_deadlock_weight() const = 0;
+};
+
+
 /**
   A granted metadata lock.
 
@@ -380,7 +444,7 @@ typedef void (*mdl_cached_object_release_hook)(void *);
           threads/contexts.
 */
 
-class MDL_ticket
+class MDL_ticket : public MDL_wait_for_subgraph
 {
 public:
   /**
@@ -414,8 +478,9 @@ public:
   bool is_incompatible_when_granted(enum_mdl_type type) const;
   bool is_incompatible_when_waiting(enum_mdl_type type) const;
 
-  /* A helper used to determine which lock request should be aborted. */
-  uint get_deadlock_weight() const;
+  /** Implement MDL_wait_for_subgraph interface. */
+  virtual bool accept_visitor(MDL_wait_for_graph_visitor *dvisitor);
+  virtual uint get_deadlock_weight() const;
 private:
   friend class MDL_context;
 
@@ -462,7 +527,7 @@ public:
   enum_wait_status get_status();
   void reset_status();
   enum_wait_status timed_wait(THD *thd, struct timespec *abs_timeout,
-                             bool signal_timeout);
+                              bool signal_timeout, const char *wait_state_name);
 private:
   /**
     Condvar which is used for waiting until this context's pending
@@ -582,8 +647,6 @@ public:
   {
     return m_needs_thr_lock_abort;
   }
-
-  bool find_deadlock(Deadlock_detection_visitor *dvisitor);
 public:
   /**
     If our request for a lock is scheduled, or aborted by the deadlock
@@ -675,12 +738,13 @@ private:
   */
   mysql_prlock_t m_LOCK_waiting_for;
   /**
-    Tell the deadlock detector what lock this session is waiting for.
+    Tell the deadlock detector what metadata lock or table
+    definition cache entry this session is waiting for.
     In principle, this is redundant, as information can be found
     by inspecting waiting queues, but we'd very much like it to be
     readily available to the wait-for graph iterator.
    */
-  MDL_ticket *m_waiting_for;
+  MDL_wait_for_subgraph *m_waiting_for;
 private:
   MDL_ticket *find_ticket(MDL_request *mdl_req,
                           bool *is_transactional);
@@ -688,13 +752,16 @@ private:
   bool try_acquire_lock_impl(MDL_request *mdl_request,
                              MDL_ticket **out_ticket);
 
+public:
   void find_deadlock();
 
+  bool visit_subgraph(MDL_wait_for_graph_visitor *dvisitor);
+
   /** Inform the deadlock detector there is an edge in the wait-for graph. */
-  void will_wait_for(MDL_ticket *pending_ticket)
+  void will_wait_for(MDL_wait_for_subgraph *waiting_for_arg)
   {
     mysql_prlock_wrlock(&m_LOCK_waiting_for);
-    m_waiting_for= pending_ticket;
+    m_waiting_for=  waiting_for_arg;
     mysql_prlock_unlock(&m_LOCK_waiting_for);
   }
 
@@ -705,6 +772,14 @@ private:
     m_waiting_for= NULL;
     mysql_prlock_unlock(&m_LOCK_waiting_for);
   }
+  void lock_deadlock_victim()
+  {
+    mysql_prlock_rdlock(&m_LOCK_waiting_for);
+  }
+  void unlock_deadlock_victim()
+  {
+    mysql_prlock_unlock(&m_LOCK_waiting_for);
+  }
 private:
   MDL_context(const MDL_context &rhs);          /* not implemented */
   MDL_context &operator=(MDL_context &rhs);     /* not implemented */
diff --git a/sql/mysqld.cc b/sql/mysqld.cc
index 880d700abeb..6dd74eb299a 100644
--- a/sql/mysqld.cc
+++ b/sql/mysqld.cc
@@ -89,6 +89,7 @@
 #include <errmsg.h>
 #include "sp_rcontext.h"
 #include "sp_cache.h"
+#include "sql_reload.h"  // reload_acl_and_cache
 
 #ifdef HAVE_POLL_H
 #include <poll.h>
@@ -194,6 +195,9 @@ typedef fp_except fp_except_t;
 # endif
 #endif
 
+extern "C" my_bool reopen_fstreams(const char *filename,
+                                   FILE *outstream, FILE *errstream);
+
 inline void setup_fpu()
 {
 #if defined(__FreeBSD__) && defined(HAVE_IEEEFP_H)
@@ -603,7 +607,7 @@ SHOW_COMP_OPTION have_profiling;
 pthread_key(MEM_ROOT**,THR_MALLOC);
 pthread_key(THD*, THR_THD);
 mysql_mutex_t LOCK_thread_count;
-mysql_mutex_t LOCK_open,
+mysql_mutex_t
   LOCK_status, LOCK_global_read_lock,
   LOCK_error_log, LOCK_uuid_generator,
   LOCK_delayed_insert, LOCK_delayed_status, LOCK_delayed_create,
@@ -625,7 +629,7 @@ mysql_mutex_t LOCK_des_key_file;
 mysql_rwlock_t LOCK_grant, LOCK_sys_init_connect, LOCK_sys_init_slave;
 mysql_rwlock_t LOCK_system_variables_hash;
 mysql_cond_t COND_thread_count;
-mysql_cond_t COND_refresh, COND_global_read_lock;
+mysql_cond_t COND_global_read_lock;
 pthread_t signal_thread;
 pthread_attr_t connection_attrib;
 mysql_mutex_t LOCK_server_started;
@@ -1528,7 +1532,6 @@ static void wait_for_signal_thread_to_end()
 static void clean_up_mutexes()
 {
   mysql_rwlock_destroy(&LOCK_grant);
-  mysql_mutex_destroy(&LOCK_open);
   mysql_mutex_destroy(&LOCK_thread_count);
   mysql_mutex_destroy(&LOCK_status);
   mysql_mutex_destroy(&LOCK_delayed_insert);
@@ -1561,7 +1564,6 @@ static void clean_up_mutexes()
   mysql_mutex_destroy(&LOCK_prepared_stmt_count);
   mysql_mutex_destroy(&LOCK_error_messages);
   mysql_cond_destroy(&COND_thread_count);
-  mysql_cond_destroy(&COND_refresh);
   mysql_cond_destroy(&COND_global_read_lock);
   mysql_cond_destroy(&COND_thread_cache);
   mysql_cond_destroy(&COND_flush_thread_cache);
@@ -3502,7 +3504,6 @@ You should consider changing lower_case_table_names to 1 or 2",
 
 static int init_thread_environment()
 {
-  mysql_mutex_init(key_LOCK_open, &LOCK_open, MY_MUTEX_INIT_FAST);
   mysql_mutex_init(key_LOCK_thread_count, &LOCK_thread_count, MY_MUTEX_INIT_FAST);
   mysql_mutex_init(key_LOCK_status, &LOCK_status, MY_MUTEX_INIT_FAST);
   mysql_mutex_init(key_LOCK_delayed_insert,
@@ -3549,7 +3550,6 @@ static int init_thread_environment()
   mysql_rwlock_init(key_rwlock_LOCK_sys_init_slave, &LOCK_sys_init_slave);
   mysql_rwlock_init(key_rwlock_LOCK_grant, &LOCK_grant);
   mysql_cond_init(key_COND_thread_count, &COND_thread_count, NULL);
-  mysql_cond_init(key_COND_refresh, &COND_refresh, NULL);
   mysql_cond_init(key_COND_global_read_lock, &COND_global_read_lock, NULL);
   mysql_cond_init(key_COND_thread_cache, &COND_thread_cache, NULL);
   mysql_cond_init(key_COND_flush_thread_cache, &COND_flush_thread_cache, NULL);
@@ -3743,13 +3743,15 @@ static int init_server_components()
       opt_error_log= 0;                         // Too long file name
     else
     {
+      my_bool res;
 #ifndef EMBEDDED_LIBRARY
-      if (freopen(log_error_file, "a+", stdout))
+      res= reopen_fstreams(log_error_file, stdout, stderr);
+#else
+      res= reopen_fstreams(log_error_file, NULL, stderr);
 #endif
-      {
-        if (freopen(log_error_file, "a+", stderr))
-          setbuf(stderr, NULL);
-      }
+
+      if (!res)
+        setbuf(stderr, NULL);
     }
   }
 
@@ -4445,8 +4447,8 @@ int mysqld_main(int argc, char **argv)
 #ifdef __WIN__
   if (!opt_console)
   {
-    freopen(log_error_file,"a+",stdout);
-    freopen(log_error_file,"a+",stderr);
+    if (reopen_fstreams(log_error_file, stdout, stderr))
+      unireg_abort(1);
     setbuf(stderr, NULL);
     FreeConsole();				// Remove window
   }
@@ -4498,6 +4500,8 @@ int mysqld_main(int argc, char **argv)
   init_status_vars();
   if (opt_bootstrap) /* If running with bootstrap, do not start replication. */
     opt_skip_slave_start= 1;
+
+  binlog_unsafe_map_init();
   /*
     init_slave() must be called after the thread keys are created.
     Some parts of the code (e.g. SHOW STATUS LIKE 'slave_running' and other
@@ -6425,6 +6429,7 @@ SHOW_VAR status_vars[]= {
   {"Handler_prepare",          (char*) offsetof(STATUS_VAR, ha_prepare_count),  SHOW_LONG_STATUS},
   {"Handler_read_first",       (char*) offsetof(STATUS_VAR, ha_read_first_count), SHOW_LONG_STATUS},
   {"Handler_read_key",         (char*) offsetof(STATUS_VAR, ha_read_key_count), SHOW_LONG_STATUS},
+  {"Handler_read_last",        (char*) offsetof(STATUS_VAR, ha_read_last_count), SHOW_LONG_STATUS},
   {"Handler_read_next",        (char*) offsetof(STATUS_VAR, ha_read_next_count), SHOW_LONG_STATUS},
   {"Handler_read_prev",        (char*) offsetof(STATUS_VAR, ha_read_prev_count), SHOW_LONG_STATUS},
   {"Handler_read_rnd",         (char*) offsetof(STATUS_VAR, ha_read_rnd_count), SHOW_LONG_STATUS},
@@ -7663,7 +7668,7 @@ PSI_mutex_key key_BINLOG_LOCK_index, key_BINLOG_LOCK_prep_xids,
   key_LOCK_delayed_insert, key_LOCK_delayed_status, key_LOCK_error_log,
   key_LOCK_gdl, key_LOCK_global_read_lock, key_LOCK_global_system_variables,
   key_LOCK_manager,
-  key_LOCK_open, key_LOCK_prepared_stmt_count,
+  key_LOCK_prepared_stmt_count,
   key_LOCK_rpl_status, key_LOCK_server_started, key_LOCK_status,
   key_LOCK_system_variables_hash, key_LOCK_table_share, key_LOCK_thd_data,
   key_LOCK_user_conn, key_LOCK_uuid_generator, key_LOG_LOCK_log,
@@ -7702,7 +7707,6 @@ static PSI_mutex_info all_server_mutexes[]=
   { &key_LOCK_global_read_lock, "LOCK_global_read_lock", PSI_FLAG_GLOBAL},
   { &key_LOCK_global_system_variables, "LOCK_global_system_variables", PSI_FLAG_GLOBAL},
   { &key_LOCK_manager, "LOCK_manager", PSI_FLAG_GLOBAL},
-  { &key_LOCK_open, "LOCK_open", PSI_FLAG_GLOBAL},
   { &key_LOCK_prepared_stmt_count, "LOCK_prepared_stmt_count", PSI_FLAG_GLOBAL},
   { &key_LOCK_rpl_status, "LOCK_rpl_status", PSI_FLAG_GLOBAL},
   { &key_LOCK_server_started, "LOCK_server_started", PSI_FLAG_GLOBAL},
@@ -7750,7 +7754,7 @@ PSI_cond_key key_PAGE_cond, key_COND_active, key_COND_pool;
 
 PSI_cond_key key_BINLOG_COND_prep_xids, key_BINLOG_update_cond,
   key_COND_cache_status_changed, key_COND_global_read_lock, key_COND_manager,
-  key_COND_refresh, key_COND_rpl_status, key_COND_server_started,
+  key_COND_rpl_status, key_COND_server_started,
   key_delayed_insert_cond, key_delayed_insert_cond_client,
   key_item_func_sleep_cond, key_master_info_data_cond,
   key_master_info_start_cond, key_master_info_stop_cond,
@@ -7774,7 +7778,6 @@ static PSI_cond_info all_server_conds[]=
   { &key_COND_cache_status_changed, "Query_cache::COND_cache_status_changed", 0},
   { &key_COND_global_read_lock, "COND_global_read_lock", PSI_FLAG_GLOBAL},
   { &key_COND_manager, "COND_manager", PSI_FLAG_GLOBAL},
-  { &key_COND_refresh, "COND_refresh", PSI_FLAG_GLOBAL},
   { &key_COND_rpl_status, "COND_rpl_status", PSI_FLAG_GLOBAL},
   { &key_COND_server_started, "COND_server_started", PSI_FLAG_GLOBAL},
   { &key_delayed_insert_cond, "Delayed_insert::cond", 0},
diff --git a/sql/mysqld.h b/sql/mysqld.h
index 5350602d435..6e81c240f7d 100644
--- a/sql/mysqld.h
+++ b/sql/mysqld.h
@@ -229,7 +229,7 @@ extern PSI_mutex_key key_BINLOG_LOCK_index, key_BINLOG_LOCK_prep_xids,
   key_LOCK_delayed_insert, key_LOCK_delayed_status, key_LOCK_error_log,
   key_LOCK_gdl, key_LOCK_global_read_lock, key_LOCK_global_system_variables,
   key_LOCK_logger, key_LOCK_manager,
-  key_LOCK_open, key_LOCK_prepared_stmt_count,
+  key_LOCK_prepared_stmt_count,
   key_LOCK_rpl_status, key_LOCK_server_started, key_LOCK_status,
   key_LOCK_table_share, key_LOCK_thd_data,
   key_LOCK_user_conn, key_LOCK_uuid_generator, key_LOG_LOCK_log,
@@ -249,7 +249,7 @@ extern PSI_cond_key key_PAGE_cond, key_COND_active, key_COND_pool;
 
 extern PSI_cond_key key_BINLOG_COND_prep_xids, key_BINLOG_update_cond,
   key_COND_cache_status_changed, key_COND_global_read_lock, key_COND_manager,
-  key_COND_refresh, key_COND_rpl_status, key_COND_server_started,
+  key_COND_rpl_status, key_COND_server_started,
   key_delayed_insert_cond, key_delayed_insert_cond_client,
   key_item_func_sleep_cond, key_master_info_data_cond,
   key_master_info_start_cond, key_master_info_stop_cond,
@@ -316,7 +316,7 @@ extern MYSQL_PLUGIN_IMPORT key_map key_map_full;          /* Should be threaded
 /*
   Server mutex locks and condition variables.
  */
-extern mysql_mutex_t LOCK_open,
+extern mysql_mutex_t
        LOCK_user_locks, LOCK_status,
        LOCK_error_log, LOCK_delayed_insert, LOCK_uuid_generator,
        LOCK_delayed_status, LOCK_delayed_create, LOCK_crypt, LOCK_timezone,
@@ -332,7 +332,7 @@ extern mysql_cond_t COND_server_started;
 extern mysql_rwlock_t LOCK_grant, LOCK_sys_init_connect, LOCK_sys_init_slave;
 extern mysql_rwlock_t LOCK_system_variables_hash;
 extern mysql_cond_t COND_thread_count;
-extern mysql_cond_t COND_refresh, COND_manager;
+extern mysql_cond_t COND_manager;
 extern mysql_cond_t COND_global_read_lock;
 extern int32 thread_running;
 extern my_atomic_rwlock_t thread_running_lock;
diff --git a/sql/opt_range.cc b/sql/opt_range.cc
index af5b4b7c7d6..b9819def54d 100644
--- a/sql/opt_range.cc
+++ b/sql/opt_range.cc
@@ -5620,7 +5620,11 @@ static SEL_TREE *get_mm_tree(RANGE_OPT_PARAM *param,COND *cond)
         SEL_TREE *tmp= get_full_func_mm_tree(param, cond_func, 
                                     field_item, (Item*)(intptr)i, inv);
         if (inv)
+        {
           tree= !tree ? tmp : tree_or(param, tree, tmp);
+          if (tree == NULL)
+            break;
+        }
         else 
           tree= tree_and(param, tree, tmp);
       }
diff --git a/sql/set_var.cc b/sql/set_var.cc
index 9daaf883ea8..501c6382056 100644
--- a/sql/set_var.cc
+++ b/sql/set_var.cc
@@ -153,6 +153,17 @@ sys_var::sys_var(sys_var_chain *chain, const char *name_arg,
   guard(lock), offset(off), on_check(on_check_func), on_update(on_update_func),
   is_os_charset(FALSE)
 {
+  /*
+    There is a limitation in handle_options() related to short options:
+    - either all short options should be declared when parsing in multiple stages,
+    - or none should be declared.
+    Because a lot of short options are used in the normal parsing phase
+    for mysqld, we enforce here that no short option is present
+    in the first (PARSE_EARLY) stage.
+    See handle_options() for details.
+  */
+  DBUG_ASSERT(parse_flag == PARSE_NORMAL || getopt_id <= 0 || getopt_id >= 255);
+
   name.str= name_arg;
   name.length= strlen(name_arg);
   DBUG_ASSERT(name.length <= NAME_CHAR_LEN);
diff --git a/sql/sql_admin.cc b/sql/sql_admin.cc
new file mode 100644
index 00000000000..1f96f1cf0e4
--- /dev/null
+++ b/sql/sql_admin.cc
@@ -0,0 +1,1001 @@
+/* Copyright (c) 2010 Oracle and/or its affiliates. All rights reserved.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
+
+#include "sql_class.h"                       // THD
+#include "keycaches.h"                       // get_key_cache
+#include "sql_base.h"                        // Open_table_context
+#include "lock.h"                            // MYSQL_OPEN_*
+#include "sql_handler.h"                     // mysql_ha_rm_tables
+#include "partition_element.h"               // PART_ADMIN
+#include "sql_partition.h"                   // set_part_state
+#include "transaction.h"                     // trans_rollback_stmt
+#include "sql_view.h"                        // view_checksum
+#include "sql_table.h"                       // mysql_recreate_table
+#include "debug_sync.h"                      // DEBUG_SYNC
+#include "sql_acl.h"                         // *_ACL
+#include "sp.h"                              // Sroutine_hash_entry
+#include "sql_parse.h"                       // check_table_access
+#include "sql_admin.h"
+
+static int send_check_errmsg(THD *thd, TABLE_LIST* table,
+			     const char* operator_name, const char* errmsg)
+
+{
+  Protocol *protocol= thd->protocol;
+  protocol->prepare_for_resend();
+  protocol->store(table->alias, system_charset_info);
+  protocol->store((char*) operator_name, system_charset_info);
+  protocol->store(STRING_WITH_LEN("error"), system_charset_info);
+  protocol->store(errmsg, system_charset_info);
+  thd->clear_error();
+  if (protocol->write())
+    return -1;
+  return 1;
+}
+
+
+static int prepare_for_repair(THD *thd, TABLE_LIST *table_list,
+			      HA_CHECK_OPT *check_opt)
+{
+  int error= 0;
+  TABLE tmp_table, *table;
+  TABLE_SHARE *share;
+  bool has_mdl_lock= FALSE;
+  char from[FN_REFLEN],tmp[FN_REFLEN+32];
+  const char **ext;
+  MY_STAT stat_info;
+  Open_table_context ot_ctx(thd, (MYSQL_OPEN_IGNORE_FLUSH |
+                                  MYSQL_OPEN_HAS_MDL_LOCK |
+                                  MYSQL_LOCK_IGNORE_TIMEOUT));
+  DBUG_ENTER("prepare_for_repair");
+
+  if (!(check_opt->sql_flags & TT_USEFRM))
+    DBUG_RETURN(0);
+
+  if (!(table= table_list->table))
+  {
+    char key[MAX_DBKEY_LENGTH];
+    uint key_length;
+    /*
+      If the table didn't exist, we have a shared metadata lock
+      on it that is left from mysql_admin_table()'s attempt to 
+      open it. Release the shared metadata lock before trying to
+      acquire the exclusive lock to satisfy MDL asserts and avoid
+      deadlocks.
+    */
+    thd->mdl_context.release_transactional_locks();
+    /*
+      Attempt to do full-blown table open in mysql_admin_table() has failed.
+      Let us try to open at least a .FRM for this table.
+    */
+    my_hash_value_type hash_value;
+
+    key_length= create_table_def_key(thd, key, table_list, 0);
+    table_list->mdl_request.init(MDL_key::TABLE,
+                                 table_list->db, table_list->table_name,
+                                 MDL_EXCLUSIVE);
+
+    if (lock_table_names(thd, table_list, table_list->next_global,
+                         thd->variables.lock_wait_timeout,
+                         MYSQL_OPEN_SKIP_TEMPORARY))
+      DBUG_RETURN(0);
+    has_mdl_lock= TRUE;
+
+    hash_value= my_calc_hash(&table_def_cache, (uchar*) key, key_length);
+    mysql_mutex_lock(&LOCK_open);
+    share= get_table_share(thd, table_list, key, key_length, 0,
+                           &error, hash_value);
+    mysql_mutex_unlock(&LOCK_open);
+    if (share == NULL)
+      DBUG_RETURN(0);				// Can't open frm file
+
+    if (open_table_from_share(thd, share, "", 0, 0, 0, &tmp_table, FALSE))
+    {
+      mysql_mutex_lock(&LOCK_open);
+      release_table_share(share);
+      mysql_mutex_unlock(&LOCK_open);
+      DBUG_RETURN(0);                           // Out of memory
+    }
+    table= &tmp_table;
+  }
+
+  /* A MERGE table must not come here. */
+  DBUG_ASSERT(table->file->ht->db_type != DB_TYPE_MRG_MYISAM);
+
+  /*
+    REPAIR TABLE ... USE_FRM for temporary tables makes little sense.
+  */
+  if (table->s->tmp_table)
+  {
+    error= send_check_errmsg(thd, table_list, "repair",
+			     "Cannot repair temporary table from .frm file");
+    goto end;
+  }
+
+  /*
+    User gave us USE_FRM which means that the header in the index file is
+    trashed.
+    In this case we will try to fix the table the following way:
+    - Rename the data file to a temporary name
+    - Truncate the table
+    - Replace the new data file with the old one
+    - Run a normal repair using the new index file and the old data file
+  */
+
+  if (table->s->frm_version != FRM_VER_TRUE_VARCHAR)
+  {
+    error= send_check_errmsg(thd, table_list, "repair",
+                             "Failed repairing incompatible .frm file");
+    goto end;
+  }
+
+  /*
+    Check if this is a table type that stores index and data separately,
+    like ISAM or MyISAM. We assume fixed order of engine file name
+    extentions array. First element of engine file name extentions array
+    is meta/index file extention. Second element - data file extention. 
+  */
+  ext= table->file->bas_ext();
+  if (!ext[0] || !ext[1])
+    goto end;					// No data file
+
+  // Name of data file
+  strxmov(from, table->s->normalized_path.str, ext[1], NullS);
+  if (!mysql_file_stat(key_file_misc, from, &stat_info, MYF(0)))
+    goto end;				// Can't use USE_FRM flag
+
+  my_snprintf(tmp, sizeof(tmp), "%s-%lx_%lx",
+	      from, current_pid, thd->thread_id);
+
+  if (table_list->table)
+  {
+    /*
+      Table was successfully open in mysql_admin_table(). Now we need
+      to close it, but leave it protected by exclusive metadata lock.
+    */
+    if (wait_while_table_is_used(thd, table, HA_EXTRA_FORCE_REOPEN))
+      goto end;
+    close_all_tables_for_name(thd, table_list->table->s, FALSE);
+    table_list->table= 0;
+  }
+  /*
+    After this point we have an exclusive metadata lock on our table
+    in both cases when table was successfully open in mysql_admin_table()
+    and when it was open in prepare_for_repair().
+  */
+
+  if (my_rename(from, tmp, MYF(MY_WME)))
+  {
+    error= send_check_errmsg(thd, table_list, "repair",
+			     "Failed renaming data file");
+    goto end;
+  }
+  if (dd_recreate_table(thd, table_list->db, table_list->table_name))
+  {
+    error= send_check_errmsg(thd, table_list, "repair",
+			     "Failed generating table from .frm file");
+    goto end;
+  }
+  /*
+    'FALSE' for 'using_transactions' means don't postpone
+    invalidation till the end of a transaction, but do it
+    immediately.
+  */
+  query_cache_invalidate3(thd, table_list, FALSE);
+  if (mysql_file_rename(key_file_misc, tmp, from, MYF(MY_WME)))
+  {
+    error= send_check_errmsg(thd, table_list, "repair",
+			     "Failed restoring .MYD file");
+    goto end;
+  }
+
+  if (thd->locked_tables_list.reopen_tables(thd))
+    goto end;
+
+  /*
+    Now we should be able to open the partially repaired table
+    to finish the repair in the handler later on.
+  */
+  if (open_table(thd, table_list, thd->mem_root, &ot_ctx))
+  {
+    error= send_check_errmsg(thd, table_list, "repair",
+                             "Failed to open partially repaired table");
+    goto end;
+  }
+
+end:
+  thd->locked_tables_list.unlink_all_closed_tables(thd, NULL, 0);
+  if (table == &tmp_table)
+  {
+    mysql_mutex_lock(&LOCK_open);
+    closefrm(table, 1);				// Free allocated memory
+    mysql_mutex_unlock(&LOCK_open);
+  }
+  /* In case of a temporary table there will be no metadata lock. */
+  if (error && has_mdl_lock)
+    thd->mdl_context.release_transactional_locks();
+
+  DBUG_RETURN(error);
+}
+
+
+
+/*
+  RETURN VALUES
+    FALSE Message sent to net (admin operation went ok)
+    TRUE  Message should be sent by caller 
+          (admin operation or network communication failed)
+*/
+static bool mysql_admin_table(THD* thd, TABLE_LIST* tables,
+                              HA_CHECK_OPT* check_opt,
+                              const char *operator_name,
+                              thr_lock_type lock_type,
+                              bool open_for_modify,
+                              bool no_warnings_for_error,
+                              uint extra_open_options,
+                              int (*prepare_func)(THD *, TABLE_LIST *,
+                                                  HA_CHECK_OPT *),
+                              int (handler::*operator_func)(THD *,
+                                                            HA_CHECK_OPT *),
+                              int (view_operator_func)(THD *, TABLE_LIST*))
+{
+  TABLE_LIST *table;
+  SELECT_LEX *select= &thd->lex->select_lex;
+  List<Item> field_list;
+  Item *item;
+  Protocol *protocol= thd->protocol;
+  LEX *lex= thd->lex;
+  int result_code;
+  DBUG_ENTER("mysql_admin_table");
+
+  field_list.push_back(item = new Item_empty_string("Table", NAME_CHAR_LEN*2));
+  item->maybe_null = 1;
+  field_list.push_back(item = new Item_empty_string("Op", 10));
+  item->maybe_null = 1;
+  field_list.push_back(item = new Item_empty_string("Msg_type", 10));
+  item->maybe_null = 1;
+  field_list.push_back(item = new Item_empty_string("Msg_text", 255));
+  item->maybe_null = 1;
+  if (protocol->send_result_set_metadata(&field_list,
+                            Protocol::SEND_NUM_ROWS | Protocol::SEND_EOF))
+    DBUG_RETURN(TRUE);
+
+  mysql_ha_rm_tables(thd, tables);
+
+  for (table= tables; table; table= table->next_local)
+  {
+    char table_name[NAME_LEN*2+2];
+    char* db = table->db;
+    bool fatal_error=0;
+    bool open_error;
+
+    DBUG_PRINT("admin", ("table: '%s'.'%s'", table->db, table->table_name));
+    DBUG_PRINT("admin", ("extra_open_options: %u", extra_open_options));
+    strxmov(table_name, db, ".", table->table_name, NullS);
+    thd->open_options|= extra_open_options;
+    table->lock_type= lock_type;
+    /*
+      To make code safe for re-execution we need to reset type of MDL
+      request as code below may change it.
+      To allow concurrent execution of read-only operations we acquire
+      weak metadata lock for them.
+    */
+    table->mdl_request.set_type((lock_type >= TL_WRITE_ALLOW_WRITE) ?
+                                MDL_SHARED_NO_READ_WRITE : MDL_SHARED_READ);
+    /* open only one table from local list of command */
+    {
+      TABLE_LIST *save_next_global, *save_next_local;
+      save_next_global= table->next_global;
+      table->next_global= 0;
+      save_next_local= table->next_local;
+      table->next_local= 0;
+      select->table_list.first= table;
+      /*
+        Time zone tables and SP tables can be add to lex->query_tables list,
+        so it have to be prepared.
+        TODO: Investigate if we can put extra tables into argument instead of
+        using lex->query_tables
+      */
+      lex->query_tables= table;
+      lex->query_tables_last= &table->next_global;
+      lex->query_tables_own_last= 0;
+      thd->no_warnings_for_error= no_warnings_for_error;
+      if (view_operator_func == NULL)
+        table->required_type=FRMTYPE_TABLE;
+
+      open_error= open_and_lock_tables(thd, table, TRUE, 0);
+      thd->no_warnings_for_error= 0;
+      table->next_global= save_next_global;
+      table->next_local= save_next_local;
+      thd->open_options&= ~extra_open_options;
+      /*
+        Under locked tables, we know that the table can be opened,
+        so any errors opening the table are logical errors.
+        In these cases it does not make sense to try to repair.
+      */
+      if (open_error && thd->locked_tables_mode)
+      {
+        result_code= HA_ADMIN_FAILED;
+        goto send_result;
+      }
+#ifdef WITH_PARTITION_STORAGE_ENGINE
+      if (table->table)
+      {
+        /*
+          Set up which partitions that should be processed
+          if ALTER TABLE t ANALYZE/CHECK/OPTIMIZE/REPAIR PARTITION ..
+          CACHE INDEX/LOAD INDEX for specified partitions
+        */
+        Alter_info *alter_info= &lex->alter_info;
+
+        if (alter_info->flags & ALTER_ADMIN_PARTITION)
+        {
+          if (!table->table->part_info)
+          {
+            my_error(ER_PARTITION_MGMT_ON_NONPARTITIONED, MYF(0));
+            DBUG_RETURN(TRUE);
+          }
+          uint num_parts_found;
+          uint num_parts_opt= alter_info->partition_names.elements;
+          num_parts_found= set_part_state(alter_info, table->table->part_info,
+                                          PART_ADMIN);
+          if (num_parts_found != num_parts_opt &&
+              (!(alter_info->flags & ALTER_ALL_PARTITION)))
+          {
+            char buff[FN_REFLEN + MYSQL_ERRMSG_SIZE];
+            size_t length;
+            DBUG_PRINT("admin", ("sending non existent partition error"));
+            protocol->prepare_for_resend();
+            protocol->store(table_name, system_charset_info);
+            protocol->store(operator_name, system_charset_info);
+            protocol->store(STRING_WITH_LEN("error"), system_charset_info);
+            length= my_snprintf(buff, sizeof(buff),
+                                ER(ER_DROP_PARTITION_NON_EXISTENT),
+                                table_name);
+            protocol->store(buff, length, system_charset_info);
+            if(protocol->write())
+              goto err;
+            my_eof(thd);
+            goto err;
+          }
+        }
+      }
+#endif
+    }
+    DBUG_PRINT("admin", ("table: 0x%lx", (long) table->table));
+
+    if (prepare_func)
+    {
+      DBUG_PRINT("admin", ("calling prepare_func"));
+      switch ((*prepare_func)(thd, table, check_opt)) {
+      case  1:           // error, message written to net
+        trans_rollback_stmt(thd);
+        trans_rollback(thd);
+        close_thread_tables(thd);
+        thd->mdl_context.release_transactional_locks();
+        DBUG_PRINT("admin", ("simple error, admin next table"));
+        continue;
+      case -1:           // error, message could be written to net
+        /* purecov: begin inspected */
+        DBUG_PRINT("admin", ("severe error, stop"));
+        goto err;
+        /* purecov: end */
+      default:           // should be 0 otherwise
+        DBUG_PRINT("admin", ("prepare_func succeeded"));
+        ;
+      }
+    }
+
+    /*
+      CHECK TABLE command is only command where VIEW allowed here and this
+      command use only temporary teble method for VIEWs resolving => there
+      can't be VIEW tree substitition of join view => if opening table
+      succeed then table->table will have real TABLE pointer as value (in
+      case of join view substitution table->table can be 0, but here it is
+      impossible)
+    */
+    if (!table->table)
+    {
+      DBUG_PRINT("admin", ("open table failed"));
+      if (thd->warning_info->is_empty())
+        push_warning(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
+                     ER_CHECK_NO_SUCH_TABLE, ER(ER_CHECK_NO_SUCH_TABLE));
+      /* if it was a view will check md5 sum */
+      if (table->view &&
+          view_checksum(thd, table) == HA_ADMIN_WRONG_CHECKSUM)
+        push_warning(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
+                     ER_VIEW_CHECKSUM, ER(ER_VIEW_CHECKSUM));
+      if (thd->stmt_da->is_error() &&
+          (thd->stmt_da->sql_errno() == ER_NO_SUCH_TABLE ||
+           thd->stmt_da->sql_errno() == ER_FILE_NOT_FOUND))
+        /* A missing table is just issued as a failed command */
+        result_code= HA_ADMIN_FAILED;
+      else
+        /* Default failure code is corrupt table */
+        result_code= HA_ADMIN_CORRUPT;
+      goto send_result;
+    }
+
+    if (table->view)
+    {
+      DBUG_PRINT("admin", ("calling view_operator_func"));
+      result_code= (*view_operator_func)(thd, table);
+      goto send_result;
+    }
+
+    if (table->schema_table)
+    {
+      result_code= HA_ADMIN_NOT_IMPLEMENTED;
+      goto send_result;
+    }
+
+    if ((table->table->db_stat & HA_READ_ONLY) && open_for_modify)
+    {
+      /* purecov: begin inspected */
+      char buff[FN_REFLEN + MYSQL_ERRMSG_SIZE];
+      size_t length;
+      enum_sql_command save_sql_command= lex->sql_command;
+      DBUG_PRINT("admin", ("sending error message"));
+      protocol->prepare_for_resend();
+      protocol->store(table_name, system_charset_info);
+      protocol->store(operator_name, system_charset_info);
+      protocol->store(STRING_WITH_LEN("error"), system_charset_info);
+      length= my_snprintf(buff, sizeof(buff), ER(ER_OPEN_AS_READONLY),
+                          table_name);
+      protocol->store(buff, length, system_charset_info);
+      trans_commit_stmt(thd);
+      trans_commit(thd);
+      close_thread_tables(thd);
+      thd->mdl_context.release_transactional_locks();
+      lex->reset_query_tables_list(FALSE);
+      /*
+        Restore Query_tables_list::sql_command value to make statement
+        safe for re-execution.
+      */
+      lex->sql_command= save_sql_command;
+      table->table=0;				// For query cache
+      if (protocol->write())
+	goto err;
+      thd->stmt_da->reset_diagnostics_area();
+      continue;
+      /* purecov: end */
+    }
+
+    /*
+      Close all instances of the table to allow MyISAM "repair"
+      to rename files.
+      @todo: This code does not close all instances of the table.
+      It only closes instances in other connections, but if this
+      connection has LOCK TABLE t1 a READ, t1 b WRITE,
+      both t1 instances will be kept open.
+      There is no need to execute this branch for InnoDB, which does
+      repair by recreate. There is no need to do it for OPTIMIZE,
+      which doesn't move files around.
+      Hence, this code should be moved to prepare_for_repair(),
+      and executed only for MyISAM engine.
+    */
+    if (lock_type == TL_WRITE && !table->table->s->tmp_table)
+    {
+      if (wait_while_table_is_used(thd, table->table,
+                                   HA_EXTRA_PREPARE_FOR_RENAME))
+        goto err;
+      DEBUG_SYNC(thd, "after_admin_flush");
+      /* Flush entries in the query cache involving this table. */
+      query_cache_invalidate3(thd, table->table, 0);
+      /*
+        XXX: hack: switch off open_for_modify to skip the
+        flush that is made later in the execution flow. 
+      */
+      open_for_modify= 0;
+    }
+
+    if (table->table->s->crashed && operator_func == &handler::ha_check)
+    {
+      /* purecov: begin inspected */
+      DBUG_PRINT("admin", ("sending crashed warning"));
+      protocol->prepare_for_resend();
+      protocol->store(table_name, system_charset_info);
+      protocol->store(operator_name, system_charset_info);
+      protocol->store(STRING_WITH_LEN("warning"), system_charset_info);
+      protocol->store(STRING_WITH_LEN("Table is marked as crashed"),
+                      system_charset_info);
+      if (protocol->write())
+        goto err;
+      /* purecov: end */
+    }
+
+    if (operator_func == &handler::ha_repair &&
+        !(check_opt->sql_flags & TT_USEFRM))
+    {
+      if ((table->table->file->check_old_types() == HA_ADMIN_NEEDS_ALTER) ||
+          (table->table->file->ha_check_for_upgrade(check_opt) ==
+           HA_ADMIN_NEEDS_ALTER))
+      {
+        DBUG_PRINT("admin", ("recreating table"));
+        trans_rollback_stmt(thd);
+        trans_rollback(thd);
+        close_thread_tables(thd);
+        thd->mdl_context.release_transactional_locks();
+        tmp_disable_binlog(thd); // binlogging is done by caller if wanted
+        result_code= mysql_recreate_table(thd, table);
+        reenable_binlog(thd);
+        /*
+          mysql_recreate_table() can push OK or ERROR.
+          Clear 'OK' status. If there is an error, keep it:
+          we will store the error message in a result set row 
+          and then clear.
+        */
+        if (thd->stmt_da->is_ok())
+          thd->stmt_da->reset_diagnostics_area();
+        table->table= NULL;
+        result_code= result_code ? HA_ADMIN_FAILED : HA_ADMIN_OK;
+        goto send_result;
+      }
+    }
+
+    DBUG_PRINT("admin", ("calling operator_func '%s'", operator_name));
+    result_code = (table->table->file->*operator_func)(thd, check_opt);
+    DBUG_PRINT("admin", ("operator_func returned: %d", result_code));
+
+send_result:
+
+    lex->cleanup_after_one_table_open();
+    thd->clear_error();  // these errors shouldn't get client
+    {
+      List_iterator_fast<MYSQL_ERROR> it(thd->warning_info->warn_list());
+      MYSQL_ERROR *err;
+      while ((err= it++))
+      {
+        protocol->prepare_for_resend();
+        protocol->store(table_name, system_charset_info);
+        protocol->store((char*) operator_name, system_charset_info);
+        protocol->store(warning_level_names[err->get_level()].str,
+                        warning_level_names[err->get_level()].length,
+                        system_charset_info);
+        protocol->store(err->get_message_text(), system_charset_info);
+        if (protocol->write())
+          goto err;
+      }
+      thd->warning_info->clear_warning_info(thd->query_id);
+    }
+    protocol->prepare_for_resend();
+    protocol->store(table_name, system_charset_info);
+    protocol->store(operator_name, system_charset_info);
+
+send_result_message:
+
+    DBUG_PRINT("info", ("result_code: %d", result_code));
+    switch (result_code) {
+    case HA_ADMIN_NOT_IMPLEMENTED:
+      {
+       char buf[MYSQL_ERRMSG_SIZE];
+       size_t length=my_snprintf(buf, sizeof(buf),
+				ER(ER_CHECK_NOT_IMPLEMENTED), operator_name);
+	protocol->store(STRING_WITH_LEN("note"), system_charset_info);
+	protocol->store(buf, length, system_charset_info);
+      }
+      break;
+
+    case HA_ADMIN_NOT_BASE_TABLE:
+      {
+        char buf[MYSQL_ERRMSG_SIZE];
+        size_t length= my_snprintf(buf, sizeof(buf),
+                                 ER(ER_BAD_TABLE_ERROR), table_name);
+        protocol->store(STRING_WITH_LEN("note"), system_charset_info);
+        protocol->store(buf, length, system_charset_info);
+      }
+      break;
+
+    case HA_ADMIN_OK:
+      protocol->store(STRING_WITH_LEN("status"), system_charset_info);
+      protocol->store(STRING_WITH_LEN("OK"), system_charset_info);
+      break;
+
+    case HA_ADMIN_FAILED:
+      protocol->store(STRING_WITH_LEN("status"), system_charset_info);
+      protocol->store(STRING_WITH_LEN("Operation failed"),
+                      system_charset_info);
+      break;
+
+    case HA_ADMIN_REJECT:
+      protocol->store(STRING_WITH_LEN("status"), system_charset_info);
+      protocol->store(STRING_WITH_LEN("Operation need committed state"),
+                      system_charset_info);
+      open_for_modify= FALSE;
+      break;
+
+    case HA_ADMIN_ALREADY_DONE:
+      protocol->store(STRING_WITH_LEN("status"), system_charset_info);
+      protocol->store(STRING_WITH_LEN("Table is already up to date"),
+                      system_charset_info);
+      break;
+
+    case HA_ADMIN_CORRUPT:
+      protocol->store(STRING_WITH_LEN("error"), system_charset_info);
+      protocol->store(STRING_WITH_LEN("Corrupt"), system_charset_info);
+      fatal_error=1;
+      break;
+
+    case HA_ADMIN_INVALID:
+      protocol->store(STRING_WITH_LEN("error"), system_charset_info);
+      protocol->store(STRING_WITH_LEN("Invalid argument"),
+                      system_charset_info);
+      break;
+
+    case HA_ADMIN_TRY_ALTER:
+    {
+      /*
+        This is currently used only by InnoDB. ha_innobase::optimize() answers
+        "try with alter", so here we close the table, do an ALTER TABLE,
+        reopen the table and do ha_innobase::analyze() on it.
+        We have to end the row, so analyze could return more rows.
+      */
+      trans_commit_stmt(thd);
+      trans_commit(thd);
+      close_thread_tables(thd);
+      thd->mdl_context.release_transactional_locks();
+      DEBUG_SYNC(thd, "ha_admin_try_alter");
+      protocol->store(STRING_WITH_LEN("note"), system_charset_info);
+      protocol->store(STRING_WITH_LEN(
+          "Table does not support optimize, doing recreate + analyze instead"),
+                      system_charset_info);
+      if (protocol->write())
+        goto err;
+      DBUG_PRINT("info", ("HA_ADMIN_TRY_ALTER, trying analyze..."));
+      TABLE_LIST *save_next_local= table->next_local,
+                 *save_next_global= table->next_global;
+      table->next_local= table->next_global= 0;
+      tmp_disable_binlog(thd); // binlogging is done by caller if wanted
+      result_code= mysql_recreate_table(thd, table);
+      reenable_binlog(thd);
+      /*
+        mysql_recreate_table() can push OK or ERROR.
+        Clear 'OK' status. If there is an error, keep it:
+        we will store the error message in a result set row 
+        and then clear.
+      */
+      if (thd->stmt_da->is_ok())
+        thd->stmt_da->reset_diagnostics_area();
+      trans_commit_stmt(thd);
+      trans_commit(thd);
+      close_thread_tables(thd);
+      thd->mdl_context.release_transactional_locks();
+      table->table= NULL;
+      if (!result_code) // recreation went ok
+      {
+        /* Clear the ticket released above. */
+        table->mdl_request.ticket= NULL;
+        DEBUG_SYNC(thd, "ha_admin_open_ltable");
+        table->mdl_request.set_type(MDL_SHARED_WRITE);
+        if ((table->table= open_ltable(thd, table, lock_type, 0)))
+        {
+          result_code= table->table->file->ha_analyze(thd, check_opt);
+          if (result_code == HA_ADMIN_ALREADY_DONE)
+            result_code= HA_ADMIN_OK;
+          else if (result_code)  // analyze failed
+            table->table->file->print_error(result_code, MYF(0));
+        }
+        else
+          result_code= -1; // open failed
+      }
+      /* Start a new row for the final status row */
+      protocol->prepare_for_resend();
+      protocol->store(table_name, system_charset_info);
+      protocol->store(operator_name, system_charset_info);
+      if (result_code) // either mysql_recreate_table or analyze failed
+      {
+        DBUG_ASSERT(thd->is_error());
+        if (thd->is_error())
+        {
+          const char *err_msg= thd->stmt_da->message();
+          if (!thd->vio_ok())
+          {
+            sql_print_error("%s", err_msg);
+          }
+          else
+          {
+            /* Hijack the row already in-progress. */
+            protocol->store(STRING_WITH_LEN("error"), system_charset_info);
+            protocol->store(err_msg, system_charset_info);
+            if (protocol->write())
+              goto err;
+            /* Start off another row for HA_ADMIN_FAILED */
+            protocol->prepare_for_resend();
+            protocol->store(table_name, system_charset_info);
+            protocol->store(operator_name, system_charset_info);
+          }
+          thd->clear_error();
+        }
+      }
+      result_code= result_code ? HA_ADMIN_FAILED : HA_ADMIN_OK;
+      table->next_local= save_next_local;
+      table->next_global= save_next_global;
+      goto send_result_message;
+    }
+    case HA_ADMIN_WRONG_CHECKSUM:
+    {
+      protocol->store(STRING_WITH_LEN("note"), system_charset_info);
+      protocol->store(ER(ER_VIEW_CHECKSUM), strlen(ER(ER_VIEW_CHECKSUM)),
+                      system_charset_info);
+      break;
+    }
+
+    case HA_ADMIN_NEEDS_UPGRADE:
+    case HA_ADMIN_NEEDS_ALTER:
+    {
+      char buf[MYSQL_ERRMSG_SIZE];
+      size_t length;
+
+      protocol->store(STRING_WITH_LEN("error"), system_charset_info);
+      length=my_snprintf(buf, sizeof(buf), ER(ER_TABLE_NEEDS_UPGRADE),
+                         table->table_name);
+      protocol->store(buf, length, system_charset_info);
+      fatal_error=1;
+      break;
+    }
+
+    default:				// Probably HA_ADMIN_INTERNAL_ERROR
+      {
+        char buf[MYSQL_ERRMSG_SIZE];
+        size_t length=my_snprintf(buf, sizeof(buf),
+                                "Unknown - internal error %d during operation",
+                                result_code);
+        protocol->store(STRING_WITH_LEN("error"), system_charset_info);
+        protocol->store(buf, length, system_charset_info);
+        fatal_error=1;
+        break;
+      }
+    }
+    if (table->table)
+    {
+      if (table->table->s->tmp_table)
+      {
+        /*
+          If the table was not opened successfully, do not try to get
+          status information. (Bug#47633)
+        */
+        if (open_for_modify && !open_error)
+          table->table->file->info(HA_STATUS_CONST);
+      }
+      else if (open_for_modify || fatal_error)
+      {
+        tdc_remove_table(thd, TDC_RT_REMOVE_UNUSED,
+                         table->db, table->table_name, FALSE);
+        /*
+          May be something modified. Consequently, we have to
+          invalidate the query cache.
+        */
+        table->table= 0;                        // For query cache
+        query_cache_invalidate3(thd, table, 0);
+      }
+    }
+    /* Error path, a admin command failed. */
+    trans_commit_stmt(thd);
+    trans_commit_implicit(thd);
+    close_thread_tables(thd);
+    thd->mdl_context.release_transactional_locks();
+
+    /*
+      If it is CHECK TABLE v1, v2, v3, and v1, v2, v3 are views, we will run
+      separate open_tables() for each CHECK TABLE argument.
+      Right now we do not have a separate method to reset the prelocking
+      state in the lex to the state after parsing, so each open will pollute
+      this state: add elements to lex->srotuines_list, TABLE_LISTs to
+      lex->query_tables. Below is a lame attempt to recover from this
+      pollution.
+      @todo: have a method to reset a prelocking context, or use separate
+      contexts for each open.
+    */
+    for (Sroutine_hash_entry *rt=
+           (Sroutine_hash_entry*)thd->lex->sroutines_list.first;
+         rt; rt= rt->next)
+      rt->mdl_request.ticket= NULL;
+
+    if (protocol->write())
+      goto err;
+  }
+
+  my_eof(thd);
+  DBUG_RETURN(FALSE);
+
+err:
+  trans_rollback_stmt(thd);
+  trans_rollback(thd);
+  close_thread_tables(thd);			// Shouldn't be needed
+  thd->mdl_context.release_transactional_locks();
+  if (table)
+    table->table=0;
+  DBUG_RETURN(TRUE);
+}
+
+
+/*
+  Assigned specified indexes for a table into key cache
+
+  SYNOPSIS
+    mysql_assign_to_keycache()
+    thd		Thread object
+    tables	Table list (one table only)
+
+  RETURN VALUES
+   FALSE ok
+   TRUE  error
+*/
+
+bool mysql_assign_to_keycache(THD* thd, TABLE_LIST* tables,
+			     LEX_STRING *key_cache_name)
+{
+  HA_CHECK_OPT check_opt;
+  KEY_CACHE *key_cache;
+  DBUG_ENTER("mysql_assign_to_keycache");
+
+  check_opt.init();
+  mysql_mutex_lock(&LOCK_global_system_variables);
+  if (!(key_cache= get_key_cache(key_cache_name)))
+  {
+    mysql_mutex_unlock(&LOCK_global_system_variables);
+    my_error(ER_UNKNOWN_KEY_CACHE, MYF(0), key_cache_name->str);
+    DBUG_RETURN(TRUE);
+  }
+  mysql_mutex_unlock(&LOCK_global_system_variables);
+  check_opt.key_cache= key_cache;
+  DBUG_RETURN(mysql_admin_table(thd, tables, &check_opt,
+				"assign_to_keycache", TL_READ_NO_INSERT, 0, 0,
+				0, 0, &handler::assign_to_keycache, 0));
+}
+
+
+/*
+  Preload specified indexes for a table into key cache
+
+  SYNOPSIS
+    mysql_preload_keys()
+    thd		Thread object
+    tables	Table list (one table only)
+
+  RETURN VALUES
+    FALSE ok
+    TRUE  error
+*/
+
+bool mysql_preload_keys(THD* thd, TABLE_LIST* tables)
+{
+  DBUG_ENTER("mysql_preload_keys");
+  /*
+    We cannot allow concurrent inserts. The storage engine reads
+    directly from the index file, bypassing the cache. It could read
+    outdated information if parallel inserts into cache blocks happen.
+  */
+  DBUG_RETURN(mysql_admin_table(thd, tables, 0,
+				"preload_keys", TL_READ_NO_INSERT, 0, 0, 0, 0,
+				&handler::preload_keys, 0));
+}
+
+
+bool Analyze_table_statement::execute(THD *thd)
+{
+  TABLE_LIST *first_table= m_lex->select_lex.table_list.first;
+  bool res= TRUE;
+  thr_lock_type lock_type = TL_READ_NO_INSERT;
+  DBUG_ENTER("Analyze_table_statement::execute");
+
+  if (check_table_access(thd, SELECT_ACL | INSERT_ACL, first_table,
+                         FALSE, UINT_MAX, FALSE))
+    goto error;
+  thd->enable_slow_log= opt_log_slow_admin_statements;
+  res= mysql_admin_table(thd, first_table, &m_lex->check_opt,
+                         "analyze", lock_type, 1, 0, 0, 0,
+                         &handler::ha_analyze, 0);
+  /* ! we write after unlocking the table */
+  if (!res && !m_lex->no_write_to_binlog)
+  {
+    /*
+      Presumably, ANALYZE and binlog writing doesn't require synchronization
+    */
+    res= write_bin_log(thd, TRUE, thd->query(), thd->query_length());
+  }
+  m_lex->select_lex.table_list.first= first_table;
+  m_lex->query_tables= first_table;
+
+error:
+  DBUG_RETURN(res);
+}
+
+
+bool Check_table_statement::execute(THD *thd)
+{
+  TABLE_LIST *first_table= m_lex->select_lex.table_list.first;
+  thr_lock_type lock_type = TL_READ_NO_INSERT;
+  bool res= TRUE;
+  DBUG_ENTER("Check_table_statement::execute");
+
+  if (check_table_access(thd, SELECT_ACL, first_table,
+                         TRUE, UINT_MAX, FALSE))
+    goto error; /* purecov: inspected */
+  thd->enable_slow_log= opt_log_slow_admin_statements;
+
+  res= mysql_admin_table(thd, first_table, &m_lex->check_opt, "check",
+                         lock_type, 0, 0, HA_OPEN_FOR_REPAIR, 0,
+                         &handler::ha_check, &view_checksum);
+
+  m_lex->select_lex.table_list.first= first_table;
+  m_lex->query_tables= first_table;
+
+error:
+  DBUG_RETURN(res);
+}
+
+
+bool Optimize_table_statement::execute(THD *thd)
+{
+  TABLE_LIST *first_table= m_lex->select_lex.table_list.first;
+  bool res= TRUE;
+  DBUG_ENTER("Optimize_table_statement::execute");
+
+  if (check_table_access(thd, SELECT_ACL | INSERT_ACL, first_table,
+                         FALSE, UINT_MAX, FALSE))
+    goto error; /* purecov: inspected */
+  thd->enable_slow_log= opt_log_slow_admin_statements;
+  res= (specialflag & (SPECIAL_SAFE_MODE | SPECIAL_NO_NEW_FUNC)) ?
+    mysql_recreate_table(thd, first_table) :
+    mysql_admin_table(thd, first_table, &m_lex->check_opt,
+                      "optimize", TL_WRITE, 1, 0, 0, 0,
+                      &handler::ha_optimize, 0);
+  /* ! we write after unlocking the table */
+  if (!res && !m_lex->no_write_to_binlog)
+  {
+    /*
+      Presumably, OPTIMIZE and binlog writing doesn't require synchronization
+    */
+    res= write_bin_log(thd, TRUE, thd->query(), thd->query_length());
+  }
+  m_lex->select_lex.table_list.first= first_table;
+  m_lex->query_tables= first_table;
+
+error:
+  DBUG_RETURN(res);
+}
+
+
+bool Repair_table_statement::execute(THD *thd)
+{
+  TABLE_LIST *first_table= m_lex->select_lex.table_list.first;
+  bool res= TRUE;
+  DBUG_ENTER("Repair_table_statement::execute");
+
+  if (check_table_access(thd, SELECT_ACL | INSERT_ACL, first_table,
+                         FALSE, UINT_MAX, FALSE))
+    goto error; /* purecov: inspected */
+  thd->enable_slow_log= opt_log_slow_admin_statements;
+  res= mysql_admin_table(thd, first_table, &m_lex->check_opt, "repair",
+                         TL_WRITE, 1,
+                         test(m_lex->check_opt.sql_flags & TT_USEFRM),
+                         HA_OPEN_FOR_REPAIR, &prepare_for_repair,
+                         &handler::ha_repair, 0);
+
+  /* ! we write after unlocking the table */
+  if (!res && !m_lex->no_write_to_binlog)
+  {
+    /*
+      Presumably, REPAIR and binlog writing doesn't require synchronization
+    */
+    res= write_bin_log(thd, TRUE, thd->query(), thd->query_length());
+  }
+  m_lex->select_lex.table_list.first= first_table;
+  m_lex->query_tables= first_table;
+
+error:
+  DBUG_RETURN(res);
+}
diff --git a/sql/sql_admin.h b/sql/sql_admin.h
new file mode 100644
index 00000000000..fdfffec8361
--- /dev/null
+++ b/sql/sql_admin.h
@@ -0,0 +1,132 @@
+/* Copyright (c) 2010 Oracle and/or its affiliates. All rights reserved.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
+
+#ifndef SQL_TABLE_MAINTENANCE_H
+#define SQL_TABLE_MAINTENANCE_H
+
+
+bool mysql_assign_to_keycache(THD* thd, TABLE_LIST* table_list,
+                              LEX_STRING *key_cache_name);
+bool mysql_preload_keys(THD* thd, TABLE_LIST* table_list);
+int reassign_keycache_tables(THD* thd, KEY_CACHE *src_cache,
+                             KEY_CACHE *dst_cache);
+
+/**
+  Analyze_statement represents the ANALYZE TABLE statement.
+*/
+class Analyze_table_statement : public Sql_statement
+{
+public:
+  /**
+    Constructor, used to represent a ANALYZE TABLE statement.
+    @param lex the LEX structure for this statement.
+  */
+  Analyze_table_statement(LEX *lex)
+    : Sql_statement(lex)
+  {}
+
+  ~Analyze_table_statement()
+  {}
+
+  /**
+    Execute a ANALYZE TABLE statement at runtime.
+    @param thd the current thread.
+    @return false on success.
+  */
+  bool execute(THD *thd);
+};
+
+
+
+/**
+  Check_table_statement represents the CHECK TABLE statement.
+*/
+class Check_table_statement : public Sql_statement
+{
+public:
+  /**
+    Constructor, used to represent a CHECK TABLE statement.
+    @param lex the LEX structure for this statement.
+  */
+  Check_table_statement(LEX *lex)
+    : Sql_statement(lex)
+  {}
+
+  ~Check_table_statement()
+  {}
+
+  /**
+    Execute a CHECK TABLE statement at runtime.
+    @param thd the current thread.
+    @return false on success.
+  */
+  bool execute(THD *thd);
+};
+
+
+
+/**
+  Optimize_table_statement represents the OPTIMIZE TABLE statement.
+*/
+class Optimize_table_statement : public Sql_statement
+{
+public:
+  /**
+    Constructor, used to represent a OPTIMIZE TABLE statement.
+    @param lex the LEX structure for this statement.
+  */
+  Optimize_table_statement(LEX *lex)
+    : Sql_statement(lex)
+  {}
+
+  ~Optimize_table_statement()
+  {}
+
+  /**
+    Execute a OPTIMIZE TABLE statement at runtime.
+    @param thd the current thread.
+    @return false on success.
+  */
+  bool execute(THD *thd);
+};
+
+
+
+/**
+  Repair_table_statement represents the REPAIR TABLE statement.
+*/
+class Repair_table_statement : public Sql_statement
+{
+public:
+  /**
+    Constructor, used to represent a REPAIR TABLE statement.
+    @param lex the LEX structure for this statement.
+  */
+  Repair_table_statement(LEX *lex)
+    : Sql_statement(lex)
+  {}
+
+  ~Repair_table_statement()
+  {}
+
+  /**
+    Execute a REPAIR TABLE statement at runtime.
+    @param thd the current thread.
+    @return false on success.
+  */
+  bool execute(THD *thd);
+};
+
+#endif
diff --git a/sql/sql_alter.cc b/sql/sql_alter.cc
new file mode 100644
index 00000000000..046e09b20a3
--- /dev/null
+++ b/sql/sql_alter.cc
@@ -0,0 +1,106 @@
+/* Copyright (c) 2010 Oracle and/or its affiliates. All rights reserved.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
+
+#include "sql_parse.h"                       // check_access,
+                                             // check_merge_table_access
+#include "sql_table.h"                       // mysql_alter_table,
+                                             // mysql_exchange_partition
+#include "sql_alter.h"
+
+bool Alter_table_statement::execute(THD *thd)
+{
+  LEX *lex= thd->lex;
+  /* first SELECT_LEX (have special meaning for many of non-SELECTcommands) */
+  SELECT_LEX *select_lex= &lex->select_lex;
+  /* first table of first SELECT_LEX */
+  TABLE_LIST *first_table= (TABLE_LIST*) select_lex->table_list.first;
+  /*
+    Code in mysql_alter_table() may modify its HA_CREATE_INFO argument,
+    so we have to use a copy of this structure to make execution
+    prepared statement- safe. A shallow copy is enough as no memory
+    referenced from this structure will be modified.
+    @todo move these into constructor...
+  */
+  HA_CREATE_INFO create_info(lex->create_info);
+  Alter_info alter_info(lex->alter_info, thd->mem_root);
+  ulong priv=0;
+  ulong priv_needed= ALTER_ACL;
+  bool result;
+
+  DBUG_ENTER("Alter_table_statement::execute");
+
+  if (thd->is_fatal_error) /* out of memory creating a copy of alter_info */
+    DBUG_RETURN(TRUE);
+  /*
+    We also require DROP priv for ALTER TABLE ... DROP PARTITION, as well
+    as for RENAME TO, as being done by SQLCOM_RENAME_TABLE
+  */
+  if (alter_info.flags & (ALTER_DROP_PARTITION | ALTER_RENAME))
+    priv_needed|= DROP_ACL;
+
+  /* Must be set in the parser */
+  DBUG_ASSERT(select_lex->db);
+  DBUG_ASSERT(!(alter_info.flags & ALTER_ADMIN_PARTITION));
+  if (check_access(thd, priv_needed, first_table->db,
+                   &first_table->grant.privilege,
+                   &first_table->grant.m_internal,
+                   0, 0) ||
+      check_access(thd, INSERT_ACL | CREATE_ACL, select_lex->db,
+                   &priv,
+                   NULL, /* Don't use first_tab->grant with sel_lex->db */
+                   0, 0) ||
+      check_merge_table_access(thd, first_table->db,
+                               create_info.merge_list.first))
+    DBUG_RETURN(TRUE);                  /* purecov: inspected */
+
+  if (check_grant(thd, priv_needed, first_table, FALSE, UINT_MAX, FALSE))
+    DBUG_RETURN(TRUE);                  /* purecov: inspected */
+
+  if (lex->name.str && !test_all_bits(priv, INSERT_ACL | CREATE_ACL))
+  {
+    // Rename of table
+    TABLE_LIST tmp_table;
+    bzero((char*) &tmp_table,sizeof(tmp_table));
+    tmp_table.table_name= lex->name.str;
+    tmp_table.db= select_lex->db;
+    tmp_table.grant.privilege= priv;
+    if (check_grant(thd, INSERT_ACL | CREATE_ACL, &tmp_table, FALSE,
+                    UINT_MAX, FALSE))
+      DBUG_RETURN(TRUE);                  /* purecov: inspected */
+  }
+
+  /* Don't yet allow changing of symlinks with ALTER TABLE */
+  if (create_info.data_file_name)
+    push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
+                        WARN_OPTION_IGNORED, ER(WARN_OPTION_IGNORED),
+                        "DATA DIRECTORY");
+  if (create_info.index_file_name)
+    push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
+                        WARN_OPTION_IGNORED, ER(WARN_OPTION_IGNORED),
+                        "INDEX DIRECTORY");
+  create_info.data_file_name= create_info.index_file_name= NULL;
+
+  thd->enable_slow_log= opt_log_slow_admin_statements;
+
+  result= mysql_alter_table(thd, select_lex->db, lex->name.str,
+                            &create_info,
+                            first_table,
+                            &alter_info,
+                            select_lex->order_list.elements,
+                            select_lex->order_list.first,
+                            lex->ignore);
+
+  DBUG_RETURN(result);
+}
diff --git a/sql/sql_alter.h b/sql/sql_alter.h
new file mode 100644
index 00000000000..6a17f87f5a4
--- /dev/null
+++ b/sql/sql_alter.h
@@ -0,0 +1,66 @@
+/* Copyright (c) 2010 Oracle and/or its affiliates. All rights reserved.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
+
+#ifndef SQL_ALTER_TABLE_H
+#define SQL_ALTER_TABLE_H
+
+/**
+  Alter_table_common represents the common properties of the ALTER TABLE
+  statements.
+  @todo move Alter_info and other ALTER generic structures from Lex here.
+*/
+class Alter_table_common : public Sql_statement
+{
+protected:
+  /**
+    Constructor.
+    @param lex the LEX structure for this statement.
+  */
+  Alter_table_common(LEX *lex)
+    : Sql_statement(lex)
+  {}
+
+  virtual ~Alter_table_common()
+  {}
+
+};
+
+/**
+  Alter_table_statement represents the generic ALTER TABLE statement.
+  @todo move Alter_info and other ALTER specific structures from Lex here.
+*/
+class Alter_table_statement : public Alter_table_common
+{
+public:
+  /**
+    Constructor, used to represent a ALTER TABLE statement.
+    @param lex the LEX structure for this statement.
+  */
+  Alter_table_statement(LEX *lex)
+    : Alter_table_common(lex)
+  {}
+
+  ~Alter_table_statement()
+  {}
+
+  /**
+    Execute a ALTER TABLE statement at runtime.
+    @param thd the current thread.
+    @return false on success.
+  */
+  bool execute(THD *thd);
+};
+
+#endif
diff --git a/sql/sql_audit.cc b/sql/sql_audit.cc
index 7d269d455a9..b7d363dc09a 100644
--- a/sql/sql_audit.cc
+++ b/sql/sql_audit.cc
@@ -138,6 +138,30 @@ static my_bool acquire_plugins(THD *thd, plugin_ref plugin, void *arg)
 
 
 /**
+  @brief Acquire audit plugins
+
+  @param[in]   thd              MySQL thread handle
+  @param[in]   event_class      Audit event class
+
+  @details Ensure that audit plugins interested in given event
+  class are locked by current thread.
+*/
+void mysql_audit_acquire_plugins(THD *thd, uint event_class)
+{
+  unsigned long event_class_mask[MYSQL_AUDIT_CLASS_MASK_SIZE];
+  DBUG_ENTER("mysql_audit_acquire_plugins");
+  set_audit_mask(event_class_mask, event_class);
+  if (thd && !check_audit_mask(mysql_global_audit_mask, event_class_mask) &&
+      check_audit_mask(thd->audit_class_mask, event_class_mask))
+  {
+    plugin_foreach(thd, acquire_plugins, MYSQL_AUDIT_PLUGIN, &event_class);
+    add_audit_mask(thd->audit_class_mask, event_class_mask);
+  }
+  DBUG_VOID_RETURN;
+}
+ 
+
+/**
   Notify the audit system of an event
   
   @param[in] thd
@@ -151,21 +175,8 @@ void mysql_audit_notify(THD *thd, uint event_class, uint event_subtype, ...)
 {
   va_list ap;
   audit_handler_t *handlers= audit_handlers + event_class;
-  unsigned long event_class_mask[MYSQL_AUDIT_CLASS_MASK_SIZE];
-  
   DBUG_ASSERT(event_class < audit_handlers_count);
-
-  set_audit_mask(event_class_mask, event_class);
-  /*
-    Check to see if we have acquired the audit plugins for the
-    required audit event classes.
-  */
-  if (thd && check_audit_mask(thd->audit_class_mask, event_class_mask))
-  {
-    plugin_foreach(thd, acquire_plugins, MYSQL_AUDIT_PLUGIN, &event_class);
-    add_audit_mask(thd->audit_class_mask, event_class_mask);
-  }
-
+  mysql_audit_acquire_plugins(thd, event_class);
   va_start(ap, event_subtype);  
   (*handlers)(thd, event_subtype, ap);
   va_end(ap);
@@ -448,6 +459,11 @@ static void event_class_dispatch(THD *thd, const struct mysql_event *event)
 #else /* EMBEDDED_LIBRARY */
 
 
+void mysql_audit_acquire_plugins(THD *thd, uint event_class)
+{
+}
+
+
 void mysql_audit_initialize()
 {
 }
diff --git a/sql/sql_audit.h b/sql/sql_audit.h
index 5b6962b9ecb..953e41f1f06 100644
--- a/sql/sql_audit.h
+++ b/sql/sql_audit.h
@@ -29,6 +29,7 @@ extern void mysql_audit_finalize();
 
 extern void mysql_audit_init_thd(THD *thd);
 extern void mysql_audit_free_thd(THD *thd);
+extern void mysql_audit_acquire_plugins(THD *thd, uint event_class);
 
 
 extern void mysql_audit_notify(THD *thd, uint event_class,
diff --git a/sql/sql_base.cc b/sql/sql_base.cc
index e810d5fc091..01ab0b6dec5 100644
--- a/sql/sql_base.cc
+++ b/sql/sql_base.cc
@@ -59,42 +59,13 @@
 #endif
 
 
-/**
-  This internal handler is used to trap internally
-  errors that can occur when executing open table
-  during the prelocking phase.
-*/
-class Prelock_error_handler : public Internal_error_handler
-{
-public:
-  Prelock_error_handler()
-    : m_handled_errors(0), m_unhandled_errors(0)
-  {}
-
-  virtual ~Prelock_error_handler() {}
-
-  virtual bool handle_condition(THD *thd,
-                                uint sql_errno,
-                                const char* sqlstate,
-                                MYSQL_ERROR::enum_warning_level level,
-                                const char* msg,
-                                MYSQL_ERROR ** cond_hdl);
-
-  bool safely_trapped_errors();
-
-private:
-  int m_handled_errors;
-  int m_unhandled_errors;
-};
-
-
 bool
-Prelock_error_handler::handle_condition(THD *,
-                                        uint sql_errno,
-                                        const char*,
-                                        MYSQL_ERROR::enum_warning_level,
-                                        const char*,
-                                        MYSQL_ERROR ** cond_hdl)
+No_such_table_error_handler::handle_condition(THD *,
+                                              uint sql_errno,
+                                              const char*,
+                                              MYSQL_ERROR::enum_warning_level,
+                                              const char*,
+                                              MYSQL_ERROR ** cond_hdl)
 {
   *cond_hdl= NULL;
   if (sql_errno == ER_NO_SUCH_TABLE)
@@ -108,7 +79,7 @@ Prelock_error_handler::handle_condition(THD *,
 }
 
 
-bool Prelock_error_handler::safely_trapped_errors()
+bool No_such_table_error_handler::safely_trapped_errors()
 {
   /*
     If m_unhandled_errors != 0, something else, unanticipated, happened,
@@ -124,6 +95,38 @@ bool Prelock_error_handler::safely_trapped_errors()
 */
 
 /**
+  Protects table_def_hash, used and unused lists in the
+  TABLE_SHARE object, LRU lists of used TABLEs and used
+  TABLE_SHAREs, refresh_version and the table id counter.
+*/
+mysql_mutex_t LOCK_open;
+
+#ifdef HAVE_PSI_INTERFACE
+static PSI_mutex_key key_LOCK_open;
+static PSI_mutex_info all_tdc_mutexes[]= {
+  { &key_LOCK_open, "LOCK_open", PSI_FLAG_GLOBAL }
+};
+
+/**
+  Initialize performance schema instrumentation points
+  used by the table cache.
+*/
+
+static void init_tdc_psi_keys(void)
+{
+  const char *category= "sql";
+  int count;
+
+  if (PSI_server == NULL)
+    return;
+
+  count= array_elements(all_tdc_mutexes);
+  PSI_server->register_mutex(category, all_tdc_mutexes, count);
+}
+#endif /* HAVE_PSI_INTERFACE */
+
+
+/**
    Total number of TABLE instances for tables in the table definition cache
    (both in use by threads and not in use). This value is accessible to user
    as "Open_tables" status variable.
@@ -146,9 +149,6 @@ static bool check_and_update_table_version(THD *thd, TABLE_LIST *tables,
 static bool open_table_entry_fini(THD *thd, TABLE_SHARE *share, TABLE *entry);
 static bool auto_repair_table(THD *thd, TABLE_LIST *table_list);
 static void free_cache_entry(TABLE *entry);
-static bool tdc_wait_for_old_versions(THD *thd,
-                                      MDL_request_list *mdl_requests,
-                                      ulong timeout);
 static bool
 has_write_table_with_auto_increment(TABLE_LIST *tables);
 
@@ -294,9 +294,14 @@ static void table_def_free_entry(TABLE_SHARE *share)
 bool table_def_init(void)
 {
   table_def_inited= 1;
+#ifdef HAVE_PSI_INTERFACE
+  init_tdc_psi_keys();
+#endif
+  mysql_mutex_init(key_LOCK_open, &LOCK_open, MY_MUTEX_INIT_FAST);
   oldest_unused_share= &end_of_unused_share;
   end_of_unused_share.prev= &oldest_unused_share;
 
+
   return my_hash_init(&table_def_cache, &my_charset_bin, table_def_size,
                       0, 0, table_def_key,
                       (my_hash_free_key) table_def_free_entry, 0) != 0;
@@ -314,8 +319,6 @@ void table_def_start_shutdown(void)
   if (table_def_inited)
   {
     mysql_mutex_lock(&LOCK_open);
-    /* Free all cached but unused TABLEs and TABLE_SHAREs first. */
-    close_cached_tables(NULL, NULL, TRUE, FALSE);
     /*
       Ensure that TABLE and TABLE_SHARE objects which are created for
       tables that are open during process of plugins' shutdown are
@@ -324,6 +327,8 @@ void table_def_start_shutdown(void)
     */
     table_def_shutdown_in_progress= TRUE;
     mysql_mutex_unlock(&LOCK_open);
+    /* Free all cached but unused TABLEs and TABLE_SHAREs. */
+    close_cached_tables(NULL, NULL, FALSE, LONG_TIMEOUT);
   }
 }
 
@@ -336,6 +341,7 @@ void table_def_free(void)
     table_def_inited= 0;
     /* Free table definitions. */
     my_hash_free(&table_def_cache);
+    mysql_mutex_destroy(&LOCK_open);
   }
   DBUG_VOID_RETURN;
 }
@@ -441,7 +447,7 @@ static void table_def_unuse_table(TABLE *table)
   DBUG_ASSERT(table->in_use);
 
   /* We shouldn't put the table to 'unused' list if the share is old. */
-  DBUG_ASSERT(! table->s->needs_reopen());
+  DBUG_ASSERT(! table->s->has_old_version());
 
   table->in_use= 0;
   /* Remove table from the list of tables used in this share. */
@@ -516,10 +522,10 @@ TABLE_SHARE *get_table_share(THD *thd, TABLE_LIST *table_list, char *key,
   }
 
   /*
-    We assign a new table id under the protection of the LOCK_open and
-    the share's own mutex.  We do this insted of creating a new mutex
+    We assign a new table id under the protection of LOCK_open.
+    We do this instead of creating a new mutex
     and using it for the sole purpose of serializing accesses to a
-    static variable, we assign the table id here.  We assign it to the
+    static variable, we assign the table id here. We assign it to the
     share before inserting it into the table_def_cache to be really
     sure that it cannot be read from the cache without having a table
     id assigned.
@@ -547,7 +553,7 @@ TABLE_SHARE *get_table_share(THD *thd, TABLE_LIST *table_list, char *key,
   DBUG_RETURN(share);
 
 found:
-  /* 
+  /*
      We found an existing table definition. Return it if we didn't get
      an error when reading the table definition from file.
   */
@@ -589,21 +595,21 @@ found:
 }
 
 
-/*
+/**
   Get a table share. If it didn't exist, try creating it from engine
 
-  For arguments and return values, see get_table_from_share()
+  For arguments and return values, see get_table_share()
 */
 
-static TABLE_SHARE
-*get_table_share_with_create(THD *thd, TABLE_LIST *table_list,
-                             char *key, uint key_length,
-                             uint db_flags, int *error,
-                             my_hash_value_type hash_value)
+static TABLE_SHARE *
+get_table_share_with_discover(THD *thd, TABLE_LIST *table_list,
+                              char *key, uint key_length,
+                              uint db_flags, int *error,
+                              my_hash_value_type hash_value)
 
 {
   TABLE_SHARE *share;
-  int tmp;
+  bool exists;
   DBUG_ENTER("get_table_share_with_create");
 
   share= get_table_share(thd, table_list, key, key_length, db_flags, error,
@@ -617,10 +623,15 @@ static TABLE_SHARE
     from the pre-locking list. In this case we still need to try
     auto-discover before returning a NULL share.
 
+    Or, we're inside SHOW CREATE VIEW, which
+    also installs a silencer for ER_NO_SUCH_TABLE error.
+
     If share is NULL and the error is ER_NO_SUCH_TABLE, this is
-    the same as above, only that the error was not silenced by 
-    pre-locking. Once again, we need to try to auto-discover
-    the share.
+    the same as above, only that the error was not silenced by
+    pre-locking or SHOW CREATE VIEW.
+
+    In both these cases it won't harm to try to discover the
+    table.
 
     Finally, if share is still NULL, it's a real error and we need
     to abort.
@@ -628,20 +639,25 @@ static TABLE_SHARE
     @todo Rework alternative ways to deal with ER_NO_SUCH TABLE.
   */
   if (share || (thd->is_error() && thd->stmt_da->sql_errno() != ER_NO_SUCH_TABLE))
-
     DBUG_RETURN(share);
 
+  *error= 0;
+
   /* Table didn't exist. Check if some engine can provide it */
-  tmp= ha_create_table_from_engine(thd, table_list->db,
-                                   table_list->table_name);
-  if (tmp < 0)
+  if (ha_check_if_table_exists(thd, table_list->db, table_list->table_name,
+                               &exists))
+  {
+    thd->clear_error();
+    /* Conventionally, the storage engine API does not report errors. */
+    my_error(ER_OUT_OF_RESOURCES, MYF(0));
+  }
+  else if (! exists)
   {
     /*
       No such table in any engine.
       Hide "Table doesn't exist" errors if the table belongs to a view.
       The check for thd->is_error() is necessary to not push an
-      unwanted error in case of pre-locking, which silences
-      "no such table" errors.
+      unwanted error in case the error was already silenced.
       @todo Rework the alternative ways to deal with ER_NO_SUCH TABLE.
     */
     if (thd->is_error())
@@ -659,27 +675,16 @@ static TABLE_SHARE
                  view->view_db.str, view->view_name.str);
       }
     }
-    DBUG_RETURN(0);
   }
-  if (tmp)
+  else
   {
-    /* Give right error message */
     thd->clear_error();
-    DBUG_PRINT("error", ("Discovery of %s/%s failed", table_list->db,
-                         table_list->table_name));
-    my_printf_error(ER_UNKNOWN_ERROR,
-                    "Failed to open '%-.64s', error while "
-                    "unpacking from engine",
-                    MYF(0), table_list->table_name);
-    DBUG_RETURN(0);
+    *error= 7; /* Run auto-discover. */
   }
-  /* Table existed in engine. Let's open it */
-  thd->warning_info->clear_warning_info(thd->query_id);
-  thd->clear_error();                           // Clear error message
-  DBUG_RETURN(get_table_share(thd, table_list, key, key_length,
-                              db_flags, error, hash_value));
+  DBUG_RETURN(NULL);
 }
 
+
 /**
   Mark that we are not using table share anymore.
 
@@ -703,7 +708,7 @@ void release_table_share(TABLE_SHARE *share)
   DBUG_ASSERT(share->ref_count);
   if (!--share->ref_count)
   {
-    if (share->needs_reopen() || table_def_shutdown_in_progress)
+    if (share->has_old_version() || table_def_shutdown_in_progress)
       my_hash_delete(&table_def_cache, (uchar*) share);
     else
     {
@@ -890,7 +895,7 @@ void free_io_cache(TABLE *table)
 
    @param share Table share.
 
-   @pre Caller should have LOCK_open mutex acquired.
+   @pre Caller should have LOCK_open mutex.
 */
 
 static void kill_delayed_threads_for_table(TABLE_SHARE *share)
@@ -926,8 +931,8 @@ static void kill_delayed_threads_for_table(TABLE_SHARE *share)
 
   @param thd Thread context
   @param tables List of tables to remove from the cache
-  @param have_lock If LOCK_open is locked
   @param wait_for_refresh Wait for a impending flush
+  @param timeout Timeout for waiting for flush to be completed.
 
   @note THD can be NULL, but then wait_for_refresh must be FALSE
         and tables must be NULL.
@@ -940,19 +945,28 @@ static void kill_delayed_threads_for_table(TABLE_SHARE *share)
         lock taken by thread trying to obtain global read lock.
 */
 
-bool close_cached_tables(THD *thd, TABLE_LIST *tables, bool have_lock,
-                         bool wait_for_refresh)
+bool close_cached_tables(THD *thd, TABLE_LIST *tables,
+                         bool wait_for_refresh, ulong timeout)
 {
   bool result= FALSE;
   bool found= TRUE;
+  struct timespec abstime;
   DBUG_ENTER("close_cached_tables");
   DBUG_ASSERT(thd || (!wait_for_refresh && !tables));
 
-  if (!have_lock)
-    mysql_mutex_lock(&LOCK_open);
+  mysql_mutex_lock(&LOCK_open);
   if (!tables)
   {
-    refresh_version++;				// Force close of open tables
+    /*
+      Force close of all open tables.
+
+      Note that code in TABLE_SHARE::wait_for_old_version() assumes that
+      incrementing of refresh_version and removal of unused tables and
+      shares from TDC happens atomically under protection of LOCK_open,
+      or putting it another way that TDC does not contain old shares
+      which don't have any tables used.
+    */
+    refresh_version++;
     DBUG_PRINT("tcache", ("incremented global refresh_version to: %lu",
                           refresh_version));
     kill_delayed_threads();
@@ -978,7 +992,7 @@ bool close_cached_tables(THD *thd, TABLE_LIST *tables, bool have_lock,
         kill_delayed_threads_for_table(share);
         /* tdc_remove_table() also sets TABLE_SHARE::version to 0. */
         tdc_remove_table(thd, TDC_RT_REMOVE_UNUSED, table->db,
-                         table->table_name);
+                         table->table_name, TRUE);
 	found=1;
       }
     }
@@ -986,14 +1000,12 @@ bool close_cached_tables(THD *thd, TABLE_LIST *tables, bool have_lock,
       wait_for_refresh=0;			// Nothing to wait for
   }
 
-  if (!have_lock)
-    mysql_mutex_unlock(&LOCK_open);
+  mysql_mutex_unlock(&LOCK_open);
 
   if (!wait_for_refresh)
     DBUG_RETURN(result);
 
-  /* Code below assume that LOCK_open is released. */
-  DBUG_ASSERT(!have_lock);
+  set_timespec(abstime, timeout);
 
   if (thd->locked_tables_mode)
   {
@@ -1034,6 +1046,7 @@ bool close_cached_tables(THD *thd, TABLE_LIST *tables, bool have_lock,
 
   while (found && ! thd->killed)
   {
+    TABLE_SHARE *share;
     found= FALSE;
     /*
       To a self-deadlock or deadlocks with other FLUSH threads
@@ -1044,15 +1057,12 @@ bool close_cached_tables(THD *thd, TABLE_LIST *tables, bool have_lock,
 
     mysql_mutex_lock(&LOCK_open);
 
-    thd->enter_cond(&COND_refresh, &LOCK_open, "Flushing tables");
-
     if (!tables)
     {
       for (uint idx=0 ; idx < table_def_cache.records ; idx++)
       {
-        TABLE_SHARE *share=(TABLE_SHARE*) my_hash_element(&table_def_cache,
-                                                          idx);
-        if (share->needs_reopen())
+        share= (TABLE_SHARE*) my_hash_element(&table_def_cache, idx);
+        if (share->has_old_version())
         {
           found= TRUE;
           break;
@@ -1063,8 +1073,8 @@ bool close_cached_tables(THD *thd, TABLE_LIST *tables, bool have_lock,
     {
       for (TABLE_LIST *table= tables; table; table= table->next_local)
       {
-        TABLE_SHARE *share= get_cached_table_share(table->db, table->table_name);
-        if (share && share->needs_reopen())
+        share= get_cached_table_share(table->db, table->table_name);
+        if (share && share->has_old_version())
         {
 	  found= TRUE;
           break;
@@ -1074,11 +1084,20 @@ bool close_cached_tables(THD *thd, TABLE_LIST *tables, bool have_lock,
 
     if (found)
     {
-      DBUG_PRINT("signal", ("Waiting for COND_refresh"));
-      mysql_cond_wait(&COND_refresh, &LOCK_open);
+      /*
+        The method below temporarily unlocks LOCK_open and frees
+        share's memory.
+      */
+      if (share->wait_for_old_version(thd, &abstime,
+                                    MDL_wait_for_subgraph::DEADLOCK_WEIGHT_DDL))
+      {
+        mysql_mutex_unlock(&LOCK_open);
+        result= TRUE;
+        goto err_with_reopen;
+      }
     }
 
-    thd->exit_cond(NULL);
+    mysql_mutex_unlock(&LOCK_open);
   }
 
 err_with_reopen:
@@ -1102,13 +1121,12 @@ err_with_reopen:
 }
 
 
-/*
+/**
   Close all tables which match specified connection string or
   if specified string is NULL, then any table with a connection string.
 */
 
-bool close_cached_connection_tables(THD *thd, bool if_wait_for_refresh,
-                                    LEX_STRING *connection, bool have_lock)
+bool close_cached_connection_tables(THD *thd, LEX_STRING *connection)
 {
   uint idx;
   TABLE_LIST tmp, *tables= NULL;
@@ -1118,8 +1136,7 @@ bool close_cached_connection_tables(THD *thd, bool if_wait_for_refresh,
 
   bzero(&tmp, sizeof(TABLE_LIST));
 
-  if (!have_lock)
-    mysql_mutex_lock(&LOCK_open);
+  mysql_mutex_lock(&LOCK_open);
 
   for (idx= 0; idx < table_def_cache.records; idx++)
   {
@@ -1147,21 +1164,10 @@ bool close_cached_connection_tables(THD *thd, bool if_wait_for_refresh,
     tables= (TABLE_LIST *) memdup_root(thd->mem_root, (char*)&tmp, 
                                        sizeof(TABLE_LIST));
   }
+  mysql_mutex_unlock(&LOCK_open);
 
   if (tables)
-    result= close_cached_tables(thd, tables, TRUE, FALSE);
-
-  if (!have_lock)
-    mysql_mutex_unlock(&LOCK_open);
-
-  if (if_wait_for_refresh)
-  {
-    mysql_mutex_lock(&thd->mysys_var->mutex);
-    thd->mysys_var->current_mutex= 0;
-    thd->mysys_var->current_cond= 0;
-    thd->proc_info=0;
-    mysql_mutex_unlock(&thd->mysys_var->mutex);
-  }
+    result= close_cached_tables(thd, tables, FALSE, LONG_TIMEOUT);
 
   DBUG_RETURN(result);
 }
@@ -1355,9 +1361,8 @@ close_all_tables_for_name(THD *thd, TABLE_SHARE *share,
     }
   }
   /* Remove the table share from the cache. */
-  mysql_mutex_lock(&LOCK_open);
-  tdc_remove_table(thd, TDC_RT_REMOVE_ALL, db, table_name);
-  mysql_mutex_unlock(&LOCK_open);
+  tdc_remove_table(thd, TDC_RT_REMOVE_ALL, db, table_name,
+                   FALSE);
   /*
     There could be a FLUSH thread waiting
     on the table to go away. Wake it up.
@@ -1500,9 +1505,6 @@ void close_thread_tables(THD *thd)
     thd->lock=0;
   }
   /*
-    Note that we need to hold LOCK_open while changing the
-    open_tables list. Another thread may work on it.
-    (See: mysql_notify_thread_having_shared_lock())
     Closing a MERGE child before the parent would be fatal if the
     other thread tries to abort the MERGE lock in between.
   */
@@ -1548,7 +1550,7 @@ bool close_thread_table(THD *thd, TABLE **table_ptr)
 
   mysql_mutex_lock(&LOCK_open);
 
-  if (table->s->needs_reopen() || table->needs_reopen() ||
+  if (table->s->has_old_version() || table->needs_reopen() ||
       table_def_shutdown_in_progress)
   {
     free_cache_entry(table);
@@ -2042,13 +2044,17 @@ TABLE *find_temporary_table(THD *thd, TABLE_LIST *table_list)
   thd->temporary_tables list, it's impossible to tell here whether
   we're dealing with an internal or a user temporary table.
 
+  If is_trans is not null, we return the type of the table:
+  either transactional (e.g. innodb) as TRUE or non-transactional
+  (e.g. myisam) as FALSE.
+
   @retval  0  the table was found and dropped successfully.
   @retval  1  the table was not found in the list of temporary tables
               of this thread
   @retval -1  the table is in use by a outer query
 */
 
-int drop_temporary_table(THD *thd, TABLE_LIST *table_list)
+int drop_temporary_table(THD *thd, TABLE_LIST *table_list, bool *is_trans)
 {
   TABLE *table;
   DBUG_ENTER("drop_temporary_table");
@@ -2065,6 +2071,9 @@ int drop_temporary_table(THD *thd, TABLE_LIST *table_list)
     DBUG_RETURN(-1);
   }
 
+  if (is_trans != NULL)
+    *is_trans= table->file->has_transactions();
+
   /*
     If LOCK TABLES list is not empty and contains this table,
     unlock the table and remove the table from this list.
@@ -2201,10 +2210,9 @@ bool wait_while_table_is_used(THD *thd, TABLE *table,
              table->mdl_ticket, thd->variables.lock_wait_timeout))
     DBUG_RETURN(TRUE);
 
-  mysql_mutex_lock(&LOCK_open);
   tdc_remove_table(thd, TDC_RT_REMOVE_NOT_OWN,
-                   table->s->db.str, table->s->table_name.str);
-  mysql_mutex_unlock(&LOCK_open);
+                   table->s->db.str, table->s->table_name.str,
+                   FALSE);
   /* extra() call must come only after all instances above are closed */
   (void) table->file->extra(function);
   DBUG_RETURN(FALSE);
@@ -2245,9 +2253,8 @@ void drop_open_table(THD *thd, TABLE *table, const char *db_name,
     table->file->extra(HA_EXTRA_PREPARE_FOR_DROP);
     close_thread_table(thd, &thd->open_tables);
     /* Remove the table share from the table cache. */
-    mysql_mutex_lock(&LOCK_open);
-    tdc_remove_table(thd, TDC_RT_REMOVE_ALL, db_name, table_name);
-    mysql_mutex_unlock(&LOCK_open);
+    tdc_remove_table(thd, TDC_RT_REMOVE_ALL, db_name, table_name,
+                     FALSE);
     /* Remove the table from the storage engine and rm the .frm. */
     quick_rm_table(table_type, db_name, table_name, 0);
   }
@@ -2265,8 +2272,6 @@ void drop_open_table(THD *thd, TABLE *table, const char *db_name,
                          exists and to FALSE otherwise.
 
     @note This function acquires LOCK_open internally.
-          It also assumes that the fact that there are no exclusive
-          metadata locks on the table was checked beforehand.
 
     @note If there is no .FRM file for the table but it exists in one
           of engines (e.g. it was created on another node of NDB cluster)
@@ -2279,16 +2284,20 @@ void drop_open_table(THD *thd, TABLE *table, const char *db_name,
 bool check_if_table_exists(THD *thd, TABLE_LIST *table, bool *exists)
 {
   char path[FN_REFLEN + 1];
-  int rc= 0;
+  TABLE_SHARE *share;
   DBUG_ENTER("check_if_table_exists");
 
-  mysql_mutex_assert_not_owner(&LOCK_open);
-
   *exists= TRUE;
 
+  DBUG_ASSERT(thd->mdl_context.
+              is_lock_owner(MDL_key::TABLE, table->db,
+                            table->table_name, MDL_SHARED));
+
   mysql_mutex_lock(&LOCK_open);
+  share= get_cached_table_share(table->db, table->table_name);
+  mysql_mutex_unlock(&LOCK_open);
 
-  if (get_cached_table_share(table->db, table->table_name))
+  if (share)
     goto end;
 
   build_table_filename(path, sizeof(path) - 1, table->db, table->table_name,
@@ -2298,24 +2307,14 @@ bool check_if_table_exists(THD *thd, TABLE_LIST *table, bool *exists)
     goto end;
 
   /* .FRM file doesn't exist. Check if some engine can provide it. */
-
-  rc= ha_create_table_from_engine(thd, table->db, table->table_name);
-
-  if (rc < 0)
-  {
-    /* Table does not exists in engines as well. */
-    *exists= FALSE;
-    rc= 0;
-  }
-  else if (rc)
+  if (ha_check_if_table_exists(thd, table->db, table->table_name, exists))
   {
-    my_printf_error(ER_UNKNOWN_ERROR, "Failed to open '%-.64s', error while "
+    my_printf_error(ER_OUT_OF_RESOURCES, "Failed to open '%-.64s', error while "
                     "unpacking from engine", MYF(0), table->table_name);
+    DBUG_RETURN(TRUE);
   }
-
 end:
-  mysql_mutex_unlock(&LOCK_open);
-  DBUG_RETURN(test(rc));
+  DBUG_RETURN(FALSE);
 }
 
 
@@ -2365,8 +2364,9 @@ bool MDL_deadlock_handler::handle_condition(THD *,
   {
     /* Disable the handler to avoid infinite recursion. */
     m_is_active= TRUE;
-    (void) m_ot_ctx->request_backoff_action(Open_table_context::OT_MDL_CONFLICT,
-                                            NULL);
+    (void) m_ot_ctx->request_backoff_action(
+             Open_table_context::OT_BACKOFF_AND_RETRY,
+             NULL);
     m_is_active= FALSE;
     /*
       If the above back-off request failed, a new instance of
@@ -2412,6 +2412,8 @@ open_table_get_mdl_lock(THD *thd, Open_table_context *ot_ctx,
                         uint flags,
                         MDL_ticket **mdl_ticket)
 {
+  MDL_request mdl_request_shared;
+
   if (flags & (MYSQL_OPEN_FORCE_SHARED_MDL |
                MYSQL_OPEN_FORCE_SHARED_HIGH_PRIO_MDL))
   {
@@ -2437,16 +2439,12 @@ open_table_get_mdl_lock(THD *thd, Open_table_context *ot_ctx,
     DBUG_ASSERT(!(flags & MYSQL_OPEN_FORCE_SHARED_MDL) ||
                 !(flags & MYSQL_OPEN_FORCE_SHARED_HIGH_PRIO_MDL));
 
-    mdl_request= new (thd->mem_root) MDL_request(mdl_request);
-    if (mdl_request == NULL)
-      return TRUE;
-
-    mdl_request->set_type((flags & MYSQL_OPEN_FORCE_SHARED_MDL) ?
-                          MDL_SHARED : MDL_SHARED_HIGH_PRIO);
+    mdl_request_shared.init(&mdl_request->key,
+                            (flags & MYSQL_OPEN_FORCE_SHARED_MDL) ?
+                            MDL_SHARED : MDL_SHARED_HIGH_PRIO);
+    mdl_request= &mdl_request_shared;
   }
 
-  ot_ctx->add_request(mdl_request);
-
   if (flags & MYSQL_OPEN_FAIL_ON_MDL_CONFLICT)
   {
     /*
@@ -2509,6 +2507,40 @@ open_table_get_mdl_lock(THD *thd, Open_table_context *ot_ctx,
 }
 
 
+/**
+  Check if table's share is being removed from the table definition
+  cache and, if yes, wait until the flush is complete.
+
+  @param thd             Thread context.
+  @param table_list      Table which share should be checked.
+  @param timeout         Timeout for waiting.
+  @param deadlock_weight Weight of this wait for deadlock detector.
+
+  @retval FALSE   Success. Share is up to date or has been flushed.
+  @retval TRUE    Error (OOM, our was killed, the wait resulted
+                  in a deadlock or timeout). Reported.
+*/
+
+static bool
+tdc_wait_for_old_version(THD *thd, const char *db, const char *table_name,
+                         ulong wait_timeout, uint deadlock_weight)
+{
+  TABLE_SHARE *share;
+  bool res= FALSE;
+
+  mysql_mutex_lock(&LOCK_open);
+  if ((share= get_cached_table_share(db, table_name)) &&
+      share->has_old_version())
+  {
+    struct timespec abstime;
+    set_timespec(abstime, wait_timeout);
+    res= share->wait_for_old_version(thd, &abstime, deadlock_weight);
+  }
+  mysql_mutex_unlock(&LOCK_open);
+  return res;
+}
+
+
 /*
   Open a table.
 
@@ -2540,10 +2572,6 @@ open_table_get_mdl_lock(THD *thd, Open_table_context *ot_ctx,
     is never opened. In both cases, metadata locks are always taken according
     to the lock strategy.
 
-    If the lock strategy is OTLS_DOWNGRADE_IF_EXISTS and opening the table
-    is successful, the exclusive metadata lock acquired by the caller
-    is downgraded to a shared lock.
-
   RETURN
     TRUE  Open failed. "action" parameter may contain type of action
           needed to remedy problem before retrying again.
@@ -2598,8 +2626,8 @@ bool open_table(THD *thd, TABLE_LIST *table_list, MEM_ROOT *mem_root,
 
     if (thd->open_tables && thd->open_tables->s->version != refresh_version)
     {
-      (void) ot_ctx->request_backoff_action(Open_table_context::OT_WAIT_TDC,
-                                            NULL);
+      (void)ot_ctx->request_backoff_action(Open_table_context::OT_REOPEN_TABLES,
+                                           NULL);
       DBUG_RETURN(TRUE);
     }
   }
@@ -2810,13 +2838,29 @@ bool open_table(THD *thd, TABLE_LIST *table_list, MEM_ROOT *mem_root,
   else if (table_list->open_strategy == TABLE_LIST::OPEN_STUB)
     DBUG_RETURN(FALSE);
 
+retry_share:
+
   mysql_mutex_lock(&LOCK_open);
 
-  if (!(share= get_table_share_with_create(thd, table_list, key,
-                                           key_length, OPEN_VIEW,
-                                           &error,
-                                           hash_value)))
-    goto err_unlock2;
+  if (!(share= get_table_share_with_discover(thd, table_list, key,
+                                             key_length, OPEN_VIEW,
+                                             &error,
+                                             hash_value)))
+  {
+    mysql_mutex_unlock(&LOCK_open);
+    /*
+      If thd->is_error() is not set, we either need discover
+      (error == 7), or the error was silenced by the prelocking
+      handler (error == 0), in which case we should skip this
+      table.
+    */
+    if (error == 7 && !thd->is_error())
+    {
+      (void) ot_ctx->request_backoff_action(Open_table_context::OT_DISCOVER,
+                                            table_list);
+    }
+    DBUG_RETURN(TRUE);
+  }
 
   if (share->is_view)
   {
@@ -2867,31 +2911,50 @@ bool open_table(THD *thd, TABLE_LIST *table_list, MEM_ROOT *mem_root,
   if (table_list->i_s_requested_object &  OPEN_VIEW_ONLY)
     goto err_unlock;
 
-  /*
-    If the version changes while we're opening the tables,
-    we have to back off, close all the tables opened-so-far,
-    and try to reopen them. Note: refresh_version is currently
-    changed only during FLUSH TABLES.
-  */
-  if (share->needs_reopen() ||
-      (thd->open_tables && thd->open_tables->s->version != share->version))
+  if (!(flags & MYSQL_OPEN_IGNORE_FLUSH))
   {
-    if (!(flags & MYSQL_OPEN_IGNORE_FLUSH))
+    if (share->has_old_version())
     {
-       /*
-         We already have an MDL lock. But we have encountered an old
-         version of table in the table definition cache which is possible
-         when someone changes the table version directly in the cache
-         without acquiring a metadata lock (e.g. this can happen during
-         "rolling" FLUSH TABLE(S)).
-         Note, that to avoid a "busywait" in this case, we have to wait
-         separately in the caller for old table versions to go away
-         (see tdc_wait_for_old_versions()).
-       */
+      /*
+        We already have an MDL lock. But we have encountered an old
+        version of table in the table definition cache which is possible
+        when someone changes the table version directly in the cache
+        without acquiring a metadata lock (e.g. this can happen during
+        "rolling" FLUSH TABLE(S)).
+        Release our reference to share, wait until old version of
+        share goes away and then try to get new version of table share.
+      */
+      MDL_deadlock_handler mdl_deadlock_handler(ot_ctx);
+      bool wait_result;
+
+      release_table_share(share);
+      mysql_mutex_unlock(&LOCK_open);
+
+      thd->push_internal_handler(&mdl_deadlock_handler);
+      wait_result= tdc_wait_for_old_version(thd, table_list->db,
+                                            table_list->table_name,
+                                            ot_ctx->get_timeout(),
+                                            mdl_ticket->get_deadlock_weight());
+      thd->pop_internal_handler();
+
+      if (wait_result)
+        DBUG_RETURN(TRUE);
+
+      goto retry_share;
+    }
+
+    if (thd->open_tables && thd->open_tables->s->version != share->version)
+    {
+      /*
+        If the version changes while we're opening the tables,
+        we have to back off, close all the tables opened-so-far,
+        and try to reopen them. Note: refresh_version is currently
+        changed only during FLUSH TABLES.
+      */
       release_table_share(share);
       mysql_mutex_unlock(&LOCK_open);
-      (void) ot_ctx->request_backoff_action(Open_table_context::OT_WAIT_TDC,
-                                            NULL);
+      (void)ot_ctx->request_backoff_action(Open_table_context::OT_REOPEN_TABLES,
+                                           NULL);
       DBUG_RETURN(TRUE);
     }
   }
@@ -2952,15 +3015,6 @@ bool open_table(THD *thd, TABLE_LIST *table_list, MEM_ROOT *mem_root,
 
   mysql_mutex_unlock(&LOCK_open);
 
-  /*
-    In CREATE TABLE .. If NOT EXISTS .. SELECT we have found that
-    table exists now we should downgrade our exclusive metadata
-    lock on this table to SW metadata lock.
-  */
-  if (table_list->lock_strategy == TABLE_LIST::OTLS_DOWNGRADE_IF_EXISTS &&
-      !(flags & MYSQL_OPEN_HAS_MDL_LOCK))
-    mdl_ticket->downgrade_exclusive_lock(MDL_SHARED_WRITE);
-
   table->mdl_ticket= mdl_ticket;
 
   table->next= thd->open_tables;		/* Link into simple list */
@@ -3010,7 +3064,6 @@ err_lock:
   mysql_mutex_lock(&LOCK_open);
 err_unlock:
   release_table_share(share);
-err_unlock2:
   mysql_mutex_unlock(&LOCK_open);
 
   DBUG_RETURN(TRUE);
@@ -3432,7 +3485,7 @@ Locked_tables_list::reopen_tables(THD *thd)
   PRE-CONDITION(S)
 
     share is non-NULL
-    The LOCK_open mutex is locked
+    The LOCK_open mutex is locked.
 
   POST-CONDITION(S)
 
@@ -3633,10 +3686,10 @@ bool tdc_open_view(THD *thd, TABLE_LIST *table_list, const char *alias,
                            cache_key_length);
   mysql_mutex_lock(&LOCK_open);
 
-  if (!(share= get_table_share_with_create(thd, table_list, cache_key,
-                                           cache_key_length, 
-                                           OPEN_VIEW, &error,
-                                           hash_value)))
+  if (!(share= get_table_share(thd, table_list, cache_key,
+                               cache_key_length,
+                               OPEN_VIEW, &error,
+                               hash_value)))
     goto err;
 
   if (share->is_view &&
@@ -3738,10 +3791,10 @@ static bool auto_repair_table(THD *thd, TABLE_LIST *table_list)
                            cache_key_length);
   mysql_mutex_lock(&LOCK_open);
 
-  if (!(share= get_table_share_with_create(thd, table_list, cache_key,
-                                           cache_key_length,
-                                           OPEN_VIEW, &not_used,
-                                           hash_value)))
+  if (!(share= get_table_share(thd, table_list, cache_key,
+                               cache_key_length,
+                               OPEN_VIEW, &not_used,
+                               hash_value)))
     goto end_unlock;
 
   if (share->is_view)
@@ -3786,7 +3839,8 @@ static bool auto_repair_table(THD *thd, TABLE_LIST *table_list)
   release_table_share(share);
   /* Remove the repaired share from the table cache. */
   tdc_remove_table(thd, TDC_RT_REMOVE_ALL,
-                   table_list->db, table_list->table_name);
+                   table_list->db, table_list->table_name,
+                   TRUE);
 end_unlock:
   mysql_mutex_unlock(&LOCK_open);
   return result;
@@ -3820,7 +3874,7 @@ request_backoff_action(enum_open_table_action action_arg,
                        TABLE_LIST *table)
 {
   /*
-    A back off action may be one of the three kinds:
+    A back off action may be one of three kinds:
 
     * We met a broken table that needs repair, or a table that
       is not present on this MySQL server and needs re-discovery.
@@ -3829,27 +3883,47 @@ request_backoff_action(enum_open_table_action action_arg,
       locks is very deadlock-prone. If this is a multi- statement
       transaction that holds metadata locks for completed
       statements, we don't do it, and report an error instead.
+      The action type in this case is OT_DISCOVER or OT_REPAIR.
     * Our attempt to acquire an MDL lock lead to a deadlock,
       detected by the MDL deadlock detector. The current
       session was chosen a victim. If this is a multi-statement
-      transaction that holds metadata locks for completed statements,
-      restarting locking for the current statement may lead
-      to a livelock. Thus, again, if m_has_locks is set,
+      transaction that holds metadata locks taken by completed
+      statements, restarting locking for the current statement
+      may lead to a livelock. Releasing locks of completed
+      statements can not be done as will lead to violation
+      of ACID. Thus, again, if m_has_locks is set,
       we report an error. Otherwise, when there are no metadata
       locks other than which belong to this statement, we can
       try to recover from error by releasing all locks and
       restarting the pre-locking.
-    * Finally, we could have met a TABLE_SHARE with old version.
-      Again, if this is a first statement in a transaction we can
-      close all tables, release all metadata locks and wait for
-      the old version to go away. Otherwise, waiting with MDL locks
-      may lead to criss-cross wait between this connection and a
-      connection that has an open table and waits on a metadata lock,
-      i.e. to a deadlock.
-      Since there is no way to detect such a deadlock, we prevent
-      it by reporting an error.
+      Similarly, a deadlock error can occur when the
+      pre-locking process met a TABLE_SHARE that is being
+      flushed, and unsuccessfully waited for the flush to
+      complete. A deadlock in this case can happen, e.g.,
+      when our session is holding a metadata lock that
+      is being waited on by a session which is using
+      the table which is being flushed. The only way
+      to recover from this error is, again, to close all
+      open tables, release all locks, and retry pre-locking.
+      Action type name is OT_REOPEN_TABLES. Re-trying
+      while holding some locks may lead to a livelock,
+      and thus we don't do it.
+    * Finally, this session has open TABLEs from different
+      "generations" of the table cache. This can happen, e.g.,
+      when, after this session has successfully opened one
+      table used for a statement, FLUSH TABLES interfered and
+      expelled another table used in it. FLUSH TABLES then
+      blocks and waits on the table already opened by this
+      statement.
+      We detect this situation by ensuring that table cache
+      version of all tables used in a statement is the same.
+      If it isn't, all tables needs to be reopened.
+      Note, that we can always perform a reopen in this case,
+      even if we already have metadata locks, since we don't
+      keep tables open between statements and a livelock
+      is not possible.
   */
-  if (m_has_locks)
+  if (action_arg != OT_REOPEN_TABLES && m_has_locks)
   {
     my_error(ER_LOCK_DEADLOCK, MYF(0));
     return TRUE;
@@ -3895,11 +3969,9 @@ recover_from_failed_open(THD *thd)
   /* Execute the action. */
   switch (m_action)
   {
-    case OT_MDL_CONFLICT:
+    case OT_BACKOFF_AND_RETRY:
       break;
-    case OT_WAIT_TDC:
-      result= tdc_wait_for_old_versions(thd, &m_mdl_requests, get_timeout());
-      DBUG_ASSERT(thd->mysys_var->current_mutex == NULL);
+    case OT_REOPEN_TABLES:
       break;
     case OT_DISCOVER:
       {
@@ -3908,12 +3980,10 @@ recover_from_failed_open(THD *thd)
                                       MYSQL_OPEN_SKIP_TEMPORARY)))
           break;
 
-        mysql_mutex_lock(&LOCK_open);
         tdc_remove_table(thd, TDC_RT_REMOVE_ALL, m_failed_table->db,
-                         m_failed_table->table_name);
+                         m_failed_table->table_name, FALSE);
         ha_create_table_from_engine(thd, m_failed_table->db,
                                     m_failed_table->table_name);
-        mysql_mutex_unlock(&LOCK_open);
 
         thd->warning_info->clear_warning_info(thd->query_id);
         thd->clear_error();                 // Clear error message
@@ -3927,10 +3997,8 @@ recover_from_failed_open(THD *thd)
                                       MYSQL_OPEN_SKIP_TEMPORARY)))
           break;
 
-        mysql_mutex_lock(&LOCK_open);
         tdc_remove_table(thd, TDC_RT_REMOVE_ALL, m_failed_table->db,
-                         m_failed_table->table_name);
-        mysql_mutex_unlock(&LOCK_open);
+                         m_failed_table->table_name, FALSE);
 
         result= auto_repair_table(thd, m_failed_table);
         thd->mdl_context.release_transactional_locks();
@@ -3939,8 +4007,6 @@ recover_from_failed_open(THD *thd)
     default:
       DBUG_ASSERT(0);
   }
-  /* Remove all old requests, they will be re-added. */
-  m_mdl_requests.empty();
   /*
     Reset the pointers to conflicting MDL request and the
     TABLE_LIST element, set when we need auto-discovery or repair,
@@ -4061,8 +4127,6 @@ open_and_process_routine(THD *thd, Query_tables_list *prelocking_ctx,
       if (rt != (Sroutine_hash_entry*)prelocking_ctx->sroutines_list.first ||
           mdl_type != MDL_key::PROCEDURE)
       {
-        ot_ctx->add_request(&rt->mdl_request);
-
         /*
           Since we acquire only shared lock on routines we don't
           need to care about global intention exclusive locks.
@@ -4267,11 +4331,11 @@ open_and_process_table(THD *thd, LEX *lex, TABLE_LIST *tables,
       The real failure will occur when/if a statement attempts to use
       that table.
     */
-    Prelock_error_handler prelock_handler;
-    thd->push_internal_handler(& prelock_handler);
+    No_such_table_error_handler no_such_table_handler;
+    thd->push_internal_handler(&no_such_table_handler);
     error= open_table(thd, tables, new_frm_mem, ot_ctx);
     thd->pop_internal_handler();
-    safe_to_ignore_table= prelock_handler.safely_trapped_errors();
+    safe_to_ignore_table= no_such_table_handler.safely_trapped_errors();
   }
   else
     error= open_table(thd, tables, new_frm_mem, ot_ctx);
@@ -4739,6 +4803,8 @@ restart:
         }
         goto err;
       }
+
+      DEBUG_SYNC(thd, "open_tables_after_open_and_process_table");
     }
 
     /*
@@ -5352,8 +5418,14 @@ bool open_normal_and_derived_tables(THD *thd, TABLE_LIST *tables, uint flags)
 
   DBUG_RETURN(0);
 end:
-  /* No need to rollback statement transaction, it's not started. */
-  DBUG_ASSERT(thd->transaction.stmt.is_empty());
+  /*
+    No need to commit/rollback the statement transaction: it's
+    either not started or we're filling in an INFORMATION_SCHEMA
+    table on the fly, and thus mustn't manipulate with the
+    transaction of the enclosing statement.
+  */
+  DBUG_ASSERT(thd->transaction.stmt.is_empty() ||
+              (thd->state_flags & Open_tables_state::BACKUPS_AVAIL));
   close_thread_tables(thd);
   /* Don't keep locks for a failed statement. */
   thd->mdl_context.rollback_to_savepoint(mdl_savepoint);
@@ -8541,7 +8613,7 @@ void tdc_flush_unused_tables()
   mysql_mutex_lock(&LOCK_open);
   while (unused_tables)
     free_cache_entry(unused_tables);
-  (void) mysql_mutex_unlock(&LOCK_open);
+  mysql_mutex_unlock(&LOCK_open);
 }
 
 
@@ -8607,17 +8679,6 @@ bool mysql_notify_thread_having_shared_lock(THD *thd, THD *in_use,
     }
     mysql_mutex_unlock(&in_use->LOCK_thd_data);
   }
-  /*
-    Wake up threads waiting in tdc_wait_for_old_versions().
-    Normally such threads would already get blocked
-    in MDL subsystem, when trying to acquire a shared lock.
-    But in case a thread has an open HANDLER statement,
-    (and thus already grabbed a metadata lock), it gets
-    blocked only too late -- at the table cache level.
-    Starting from 5.5, this could also easily happen in
-    a multi-statement transaction.
-  */
-  broadcast_refresh();
   return signalled;
 }
 
@@ -8646,21 +8707,27 @@ bool mysql_notify_thread_having_shared_lock(THD *thd, THD *in_use,
                                                 remove TABLE_SHARE).
    @param  db           Name of database
    @param  table_name   Name of table
+   @param  has_lock     If TRUE, LOCK_open is already acquired
 
-   @note Unlike remove_table_from_cache() it assumes that table instances
-         are already not used by any (other) thread (this should be achieved
-         by using meta-data locks).
+   @note It assumes that table instances are already not used by any
+   (other) thread (this should be achieved by using meta-data locks).
 */
 
 void tdc_remove_table(THD *thd, enum_tdc_remove_table_type remove_type,
-                      const char *db, const char *table_name)
+                      const char *db, const char *table_name,
+                      bool has_lock)
 {
   char key[MAX_DBKEY_LENGTH];
   uint key_length;
   TABLE *table;
   TABLE_SHARE *share;
 
-  mysql_mutex_assert_owner(&LOCK_open);
+  if (! has_lock)
+    mysql_mutex_lock(&LOCK_open);
+  else
+  {
+    mysql_mutex_assert_owner(&LOCK_open);
+  }
 
   DBUG_ASSERT(remove_type == TDC_RT_REMOVE_UNUSED ||
               thd->mdl_context.is_lock_owner(MDL_key::TABLE, db, table_name,
@@ -8692,6 +8759,13 @@ void tdc_remove_table(THD *thd, enum_tdc_remove_table_type remove_type,
       /*
         Set share's version to zero in order to ensure that it gets
         automatically deleted once it is no longer referenced.
+
+        Note that code in TABLE_SHARE::wait_for_old_version() assumes
+        that marking share as old and removal of its unused tables
+        and of the share itself from TDC happens atomically under
+        protection of LOCK_open, or, putting it another way, that
+        TDC does not contain old shares which don't have any tables
+        used.
       */
       share->version= 0;
 
@@ -8701,84 +8775,9 @@ void tdc_remove_table(THD *thd, enum_tdc_remove_table_type remove_type,
     else
       (void) my_hash_delete(&table_def_cache, (uchar*) share);
   }
-}
-
-
-/**
-   Wait until there are no old versions of tables in the table
-   definition cache for the metadata locks that we try to acquire.
-
-   @param thd      Thread context
-   @param context  Metadata locking context with locks.
-   @param timeout  Seconds to wait before reporting ER_LOCK_WAIT_TIMEOUT.
-*/
 
-static bool
-tdc_wait_for_old_versions(THD *thd, MDL_request_list *mdl_requests,
-                          ulong timeout)
-{
-  TABLE_SHARE *share;
-  const char *old_msg;
-  MDL_request *mdl_request;
-  struct timespec abstime;
-  set_timespec(abstime, timeout);
-  int wait_result= 0;
-
-  while (!thd->killed)
-  {
-    /*
-      We have to get rid of HANDLERs which are open by this thread
-      and have old TABLE versions. Otherwise we might get a deadlock
-      in situation when we are waiting for an old TABLE object which
-      corresponds to a HANDLER open by another session. And this
-      other session waits for our HANDLER object to get closed.
-
-      TODO: We should also investigate in which situations we have
-            to broadcast on COND_refresh because of this.
-    */
-    mysql_ha_flush(thd);
-
-    mysql_mutex_lock(&LOCK_open);
-
-    MDL_request_list::Iterator it(*mdl_requests);
-    while ((mdl_request= it++))
-    {
-      /* Skip requests on non-TDC objects. */
-      if (mdl_request->key.mdl_namespace() != MDL_key::TABLE)
-        continue;
-
-      if ((share= get_cached_table_share(mdl_request->key.db_name(),
-                                         mdl_request->key.name())) &&
-          share->needs_reopen())
-        break;
-    }
-    if (!mdl_request)
-    {
-      /*
-        Reset wait_result here in case this was the final check
-        after getting a timeout from mysql_cond_timedwait().
-      */
-      wait_result= 0;
-      mysql_mutex_unlock(&LOCK_open);
-      break;
-    }
-    if (wait_result == ETIMEDOUT || wait_result == ETIME)
-    {
-      /*
-        Test for timeout here instead of right after mysql_cond_timedwait().
-        This allows for a final iteration and a final check before reporting
-        ER_LOCK_WAIT_TIMEOUT.
-      */
-      mysql_mutex_unlock(&LOCK_open);
-      my_error(ER_LOCK_WAIT_TIMEOUT, MYF(0));
-      break;
-    }
-    old_msg= thd->enter_cond(&COND_refresh, &LOCK_open, "Waiting for table");
-    wait_result= mysql_cond_timedwait(&COND_refresh, &LOCK_open, &abstime);
-    /* LOCK_open mutex is unlocked by THD::exit_cond() as side-effect. */
-    thd->exit_cond(old_msg);
-  }
-  return thd->killed || wait_result == ETIMEDOUT || wait_result == ETIME;
+  if (! has_lock)
+    mysql_mutex_unlock(&LOCK_open);
 }
 
 
@@ -8890,87 +8889,6 @@ bool is_equal(const LEX_STRING *a, const LEX_STRING *b)
 
 
 /*
-  Unlock and close table before renaming and dropping partitions
-  SYNOPSIS
-    alter_close_tables()
-    lpt                        Struct carrying parameters
-  RETURN VALUES
-    0
-*/
-
-static int alter_close_tables(ALTER_PARTITION_PARAM_TYPE *lpt)
-{
-  TABLE_SHARE *share= lpt->table->s;
-  THD *thd= lpt->thd;
-  TABLE *table;
-  DBUG_ENTER("alter_close_tables");
-  /*
-    We must keep LOCK_open while manipulating with thd->open_tables.
-    Another thread may be working on it.
-  */
-  mysql_mutex_lock(&LOCK_open);
-  /*
-    We can safely remove locks for all tables with the same name:
-    later they will all be closed anyway in
-    alter_partition_lock_handling().
-  */
-  for (table= thd->open_tables; table ; table= table->next)
-  {
-    if (!strcmp(table->s->table_name.str, share->table_name.str) &&
-	!strcmp(table->s->db.str, share->db.str))
-    {
-      mysql_lock_remove(thd, thd->lock, table);
-      table->file->close();
-      table->db_stat= 0;                        // Mark file closed
-      /*
-        Ensure that we won't end up with a crippled table instance
-        in the table cache if an error occurs before we reach
-        alter_partition_lock_handling() and the table is closed
-        by close_thread_tables() instead.
-      */
-      tdc_remove_table(thd, TDC_RT_REMOVE_UNUSED,
-                       table->s->db.str,
-                       table->s->table_name.str);
-    }
-  }
-  mysql_mutex_unlock(&LOCK_open);
-  DBUG_RETURN(0);
-}
-
-
-/*
-  SYNOPSIS
-    abort_and_upgrade_lock_and_close_table()
-    lpt                           Parameter passing struct
-    All parameters passed through the ALTER_PARTITION_PARAM_TYPE object
-  RETURN VALUE
-    0
-  DESCRIPTION
-    Remember old lock level (for possible downgrade later on), abort all
-    waiting threads and ensure that all keeping locks currently are
-    completed such that we own the lock exclusively and no other interaction
-    is ongoing. Close the table and hold the name lock.
-
-    thd                           Thread object
-    table                         Table object
-    db                            Database name
-    table_name                    Table name
-    old_lock_level                Old lock level
-*/
-
-int abort_and_upgrade_lock_and_close_table(ALTER_PARTITION_PARAM_TYPE *lpt)
-{
-  DBUG_ENTER("abort_and_upgrade_lock_and_close_table");
-
-  if (wait_while_table_is_used(lpt->thd, lpt->table, HA_EXTRA_FORCE_REOPEN))
-    DBUG_RETURN(1);
-  if (alter_close_tables(lpt))
-    DBUG_RETURN(1);
-  DBUG_RETURN(0);
-}
-
-
-/*
   Tells if two (or more) tables have auto_increment columns and we want to
   lock those tables with a write lock.
 
diff --git a/sql/sql_base.h b/sql/sql_base.h
index 45f1408e2f5..ff935c3fc09 100644
--- a/sql/sql_base.h
+++ b/sql/sql_base.h
@@ -70,6 +70,7 @@ enum enum_tdc_remove_table_type {TDC_RT_REMOVE_ALL, TDC_RT_REMOVE_NOT_OWN,
 #define RTFC_CHECK_KILLED_FLAG      0x0004
 
 bool check_dup(const char *db, const char *name, TABLE_LIST *tables);
+extern mysql_mutex_t LOCK_open;
 bool table_cache_init(void);
 void table_cache_free(void);
 bool table_def_init(void);
@@ -88,30 +89,55 @@ TABLE_SHARE *get_cached_table_share(const char *db, const char *table_name);
 
 TABLE *open_ltable(THD *thd, TABLE_LIST *table_list, thr_lock_type update,
                    uint lock_flags);
+
+/* mysql_lock_tables() and open_table() flags bits */
+#define MYSQL_OPEN_IGNORE_GLOBAL_READ_LOCK      0x0001
+#define MYSQL_OPEN_IGNORE_FLUSH                 0x0002
+#define MYSQL_OPEN_TEMPORARY_ONLY               0x0004
+#define MYSQL_LOCK_IGNORE_GLOBAL_READ_ONLY      0x0008
+#define MYSQL_LOCK_LOG_TABLE                    0x0010
+/**
+  Do not try to acquire a metadata lock on the table: we
+  already have one.
+*/
+#define MYSQL_OPEN_HAS_MDL_LOCK                 0x0020
+/**
+  If in locked tables mode, ignore the locked tables and get
+  a new instance of the table.
+*/
+#define MYSQL_OPEN_GET_NEW_TABLE                0x0040
+/** Don't look up the table in the list of temporary tables. */
+#define MYSQL_OPEN_SKIP_TEMPORARY               0x0080
+/** Fail instead of waiting when conficting metadata lock is discovered. */
+#define MYSQL_OPEN_FAIL_ON_MDL_CONFLICT         0x0100
+/** Open tables using MDL_SHARED lock instead of one specified in parser. */
+#define MYSQL_OPEN_FORCE_SHARED_MDL             0x0200
+/**
+  Open tables using MDL_SHARED_HIGH_PRIO lock instead of one specified
+  in parser.
+*/
+#define MYSQL_OPEN_FORCE_SHARED_HIGH_PRIO_MDL   0x0400
+/**
+  When opening or locking the table, use the maximum timeout
+  (LONG_TIMEOUT = 1 year) rather than the user-supplied timeout value.
+*/
+#define MYSQL_LOCK_IGNORE_TIMEOUT               0x0800
+
+/** Please refer to the internals manual. */
+#define MYSQL_OPEN_REOPEN  (MYSQL_OPEN_IGNORE_FLUSH |\
+                            MYSQL_OPEN_IGNORE_GLOBAL_READ_LOCK |\
+                            MYSQL_LOCK_IGNORE_GLOBAL_READ_ONLY |\
+                            MYSQL_LOCK_IGNORE_TIMEOUT |\
+                            MYSQL_OPEN_GET_NEW_TABLE |\
+                            MYSQL_OPEN_SKIP_TEMPORARY |\
+                            MYSQL_OPEN_HAS_MDL_LOCK)
+
 bool open_table(THD *thd, TABLE_LIST *table_list, MEM_ROOT *mem_root,
                 Open_table_context *ot_ctx);
-bool name_lock_locked_table(THD *thd, TABLE_LIST *tables);
-bool reopen_name_locked_table(THD* thd, TABLE_LIST* table_list, bool link_in);
-TABLE *table_cache_insert_placeholder(THD *thd, const char *key,
-                                      uint key_length);
-bool lock_table_name_if_not_cached(THD *thd, const char *db,
-                                   const char *table_name, TABLE **table);
-void detach_merge_children(TABLE *table, bool clear_refs);
-bool fix_merge_after_open(TABLE_LIST *old_child_list, TABLE_LIST **old_last,
-                          TABLE_LIST *new_child_list, TABLE_LIST **new_last);
-bool reopen_table(TABLE *table);
-bool reopen_tables(THD *thd,bool get_locks,bool in_refresh);
-void close_data_files_and_morph_locks(THD *thd, const char *db,
-                                      const char *table_name);
-void close_handle_and_leave_table_as_lock(TABLE *table);
 bool open_new_frm(THD *thd, TABLE_SHARE *share, const char *alias,
                   uint db_stat, uint prgflag,
                   uint ha_open_flags, TABLE *outparam, TABLE_LIST *table_desc,
                   MEM_ROOT *mem_root);
-bool wait_for_tables(THD *thd);
-bool table_is_used(TABLE *table, bool wait_for_name_lock);
-TABLE *drop_locked_tables(THD *thd,const char *db, const char *table_name);
-void abort_locked_tables(THD *thd,const char *db, const char *table_name);
 
 bool get_key_map_from_key_list(key_map *map, TABLE *table,
                                List<String> *index_list);
@@ -190,12 +216,9 @@ bool setup_tables_and_check_access(THD *thd,
                                    ulong want_access);
 bool wait_while_table_is_used(THD *thd, TABLE *table,
                               enum ha_extra_function function);
-void unlink_open_table(THD *thd, TABLE *find, bool unlock);
 
 void drop_open_table(THD *thd, TABLE *table, const char *db_name,
                      const char *table_name);
-void close_all_tables_for_name(THD *thd, TABLE_SHARE *share,
-                               bool remove_from_locked_tables);
 void update_non_unique_table_error(TABLE_LIST *update,
                                    const char *operation,
                                    TABLE_LIST *duplicate);
@@ -218,7 +241,6 @@ TABLE *open_n_lock_single_table(THD *thd, TABLE_LIST *table_l,
                                 thr_lock_type lock_type, uint flags);
 bool open_normal_and_derived_tables(THD *thd, TABLE_LIST *tables, uint flags);
 bool lock_tables(THD *thd, TABLE_LIST *tables, uint counter, uint flags);
-int abort_and_upgrade_lock_and_close_table(ALTER_PARTITION_PARAM_TYPE *lpt);
 int decide_logging_format(THD *thd, TABLE_LIST *tables);
 void free_io_cache(TABLE *entry);
 void intern_close_table(TABLE *entry);
@@ -226,14 +248,12 @@ bool close_thread_table(THD *thd, TABLE **table_ptr);
 bool close_temporary_tables(THD *thd);
 TABLE_LIST *unique_table(THD *thd, TABLE_LIST *table, TABLE_LIST *table_list,
                          bool check_alias);
-int drop_temporary_table(THD *thd, TABLE_LIST *table_list);
+int drop_temporary_table(THD *thd, TABLE_LIST *table_list, bool *is_trans);
 void close_temporary_table(THD *thd, TABLE *table, bool free_share,
                            bool delete_table);
 void close_temporary(TABLE *table, bool free_share, bool delete_table);
 bool rename_temporary_table(THD* thd, TABLE *table, const char *new_db,
 			    const char *table_name);
-void mysql_wait_completed_table(ALTER_PARTITION_PARAM_TYPE *lpt, TABLE *my_table);
-void remove_db_from_cache(const char *db);
 bool is_equal(const LEX_STRING *a, const LEX_STRING *b);
 
 /* Functions to work with system tables. */
@@ -249,18 +269,15 @@ TABLE *open_performance_schema_table(THD *thd, TABLE_LIST *one_table,
                                      Open_tables_state *backup);
 void close_performance_schema_table(THD *thd, Open_tables_state *backup);
 
-bool close_cached_tables(THD *thd, TABLE_LIST *tables, bool have_lock,
-                         bool wait_for_refresh);
-bool close_cached_connection_tables(THD *thd, bool wait_for_refresh,
-                                    LEX_STRING *connect_string,
-                                    bool have_lock = FALSE);
+bool close_cached_tables(THD *thd, TABLE_LIST *tables,
+                         bool wait_for_refresh, ulong timeout);
+bool close_cached_connection_tables(THD *thd, LEX_STRING *connect_string);
 void close_all_tables_for_name(THD *thd, TABLE_SHARE *share,
                                bool remove_from_locked_tables);
 OPEN_TABLE_LIST *list_open_tables(THD *thd, const char *db, const char *wild);
-bool remove_table_from_cache(THD *thd, const char *db, const char *table,
-                             uint flags);
 void tdc_remove_table(THD *thd, enum_tdc_remove_table_type remove_type,
-                      const char *db, const char *table_name);
+                      const char *db, const char *table_name,
+                      bool has_lock);
 bool tdc_open_view(THD *thd, TABLE_LIST *table_list, const char *alias,
                    char *cache_key, uint cache_key_length,
                    MEM_ROOT *mem_root, uint flags);
@@ -271,12 +288,10 @@ TABLE *find_table_for_mdl_upgrade(TABLE *list, const char *db,
 void mark_tmp_table_for_reuse(TABLE *table);
 bool check_if_table_exists(THD *thd, TABLE_LIST *table, bool *exists);
 
-extern uint  table_cache_count;
 extern TABLE *unused_tables;
 extern Item **not_found_item;
 extern Field *not_found_field;
 extern Field *view_ref_found;
-extern HASH open_cache;
 extern HASH table_def_cache;
 
 /**
@@ -454,8 +469,8 @@ public:
   enum enum_open_table_action
   {
     OT_NO_ACTION= 0,
-    OT_MDL_CONFLICT,
-    OT_WAIT_TDC,
+    OT_BACKOFF_AND_RETRY,
+    OT_REOPEN_TABLES,
     OT_DISCOVER,
     OT_REPAIR
   };
@@ -465,9 +480,6 @@ public:
   bool request_backoff_action(enum_open_table_action action_arg,
                               TABLE_LIST *table);
 
-  void add_request(MDL_request *request)
-  { m_mdl_requests.push_front(request); }
-
   bool can_recover_from_failed_open() const
   { return m_action != OT_NO_ACTION; }
 
@@ -489,8 +501,6 @@ public:
 
   uint get_flags() const { return m_flags; }
 private:
-  /** List of requests for all locks taken so far. Used for waiting on locks. */
-  MDL_request_list m_mdl_requests;
   /**
     For OT_DISCOVER and OT_REPAIR actions, the table list element for
     the table which definition should be re-discovered or which
@@ -516,4 +526,34 @@ private:
 };
 
 
+/**
+  This internal handler is used to trap ER_NO_SUCH_TABLE.
+*/
+
+class No_such_table_error_handler : public Internal_error_handler
+{
+public:
+  No_such_table_error_handler()
+    : m_handled_errors(0), m_unhandled_errors(0)
+  {}
+
+  bool handle_condition(THD *thd,
+                        uint sql_errno,
+                        const char* sqlstate,
+                        MYSQL_ERROR::enum_warning_level level,
+                        const char* msg,
+                        MYSQL_ERROR ** cond_hdl);
+
+  /**
+    Returns TRUE if one or more ER_NO_SUCH_TABLE errors have been
+    trapped and no other errors have been seen. FALSE otherwise.
+  */
+  bool safely_trapped_errors();
+
+private:
+  int m_handled_errors;
+  int m_unhandled_errors;
+};
+
+
 #endif /* SQL_BASE_INCLUDED */
diff --git a/sql/sql_class.cc b/sql/sql_class.cc
index 626173fedce..f65e5c05826 100644
--- a/sql/sql_class.cc
+++ b/sql/sql_class.cc
@@ -307,6 +307,11 @@ void **thd_ha_data(const THD *thd, const struct handlerton *hton)
   return (void **) &thd->ha_data[hton->slot].ha_ptr;
 }
 
+extern "C"
+void thd_storage_lock_wait(THD *thd, long long value)
+{
+  thd->utime_after_lock+= value;
+}
 
 /**
   Provide a handler data getter to simplify coding
@@ -3841,124 +3846,16 @@ int THD::decide_logging_format(TABLE_LIST *tables)
     int error= 0;
     int unsafe_flags;
 
-    /*
-      Classify a statement as unsafe when there is a mixed statement and an
-      on-going transaction at any point of the execution if:
-
-        1. The mixed statement is about to update a transactional table and
-        a non-transactional table.
-
-        2. The mixed statement is about to update a temporary transactional
-        table and a non-transactional table.
-      
-        3. The mixed statement is about to update a transactional table and
-        read from a non-transactional table.
-
-        4. The mixed statement is about to update a temporary transactional
-        table and read from a non-transactional table.
-
-        5. The mixed statement is about to update a non-transactional table
-        and read from a transactional table when the isolation level is
-        lower than repeatable read.
-
-      After updating a transactional table if:
-
-        6. The mixed statement is about to update a non-transactional table
-        and read from a temporary transactional table.
- 
-        7. The mixed statement is about to update a non-transactional table
-        and read from a temporary transactional table.
-
-        8. The mixed statement is about to update a non-transactionala table
-        and read from a temporary non-transactional table.
-     
-        9. The mixed statement is about to update a temporary non-transactional
-        table and update a non-transactional table.
-     
-        10. The mixed statement is about to update a temporary non-transactional
-        table and read from a non-transactional table.
-     
-        11. A statement is about to update a non-transactional table and the
-        option variables.binlog_direct_non_trans_update is OFF.
-
-      The reason for this is that locks acquired may not protected a concurrent
-      transaction of interfering in the current execution and by consequence in
-      the result. In particular, if there is an on-going transaction and a
-      transactional table was already updated, a temporary table must be written
-      to the binary log in the boundaries of the on-going transaction and as
-      such we artificially classify them as transactional.
-    */
-    if (in_multi_stmt_transaction_mode())
-    {
-      my_bool mixed_unsafe= FALSE;
-      my_bool non_trans_unsafe= FALSE;
-
-      /* Case 1. */
-      if (lex->stmt_accessed_table(LEX::STMT_WRITES_TRANS_TABLE) &&
-          lex->stmt_accessed_table(LEX::STMT_WRITES_NON_TRANS_TABLE))
-        mixed_unsafe= TRUE;
-      /* Case 2. */
-      else if (lex->stmt_accessed_table(LEX::STMT_WRITES_TEMP_TRANS_TABLE) &&
-               lex->stmt_accessed_table(LEX::STMT_WRITES_NON_TRANS_TABLE))
-        mixed_unsafe= TRUE;
-      /* Case 3. */
-      else if (lex->stmt_accessed_table(LEX::STMT_WRITES_TRANS_TABLE) &&
-               lex->stmt_accessed_table(LEX::STMT_READS_NON_TRANS_TABLE))
-        mixed_unsafe= TRUE;
-      /* Case 4. */
-      else if (lex->stmt_accessed_table(LEX::STMT_WRITES_TEMP_TRANS_TABLE) &&
-               lex->stmt_accessed_table(LEX::STMT_READS_NON_TRANS_TABLE))
-        mixed_unsafe= TRUE;
-      /* Case 5. */
-      else if (lex->stmt_accessed_table(LEX::STMT_WRITES_NON_TRANS_TABLE) &&
-               lex->stmt_accessed_table(LEX::STMT_READS_TRANS_TABLE) &&
-               tx_isolation < ISO_REPEATABLE_READ)
-        /*
-           By default, InnoDB operates in REPEATABLE READ and with the option
-           --innodb-locks-unsafe-for-binlog disabled. In this case, InnoDB uses
-           next-key locks for searches and index scans, which prevents phantom
-           rows.
- 
-           This is scenario is safe for Innodb. However, there are no means to
-           transparently get this information. Therefore, we need to improve this
-           and change the storage engines to report somehow when an execution is
-           safe under an isolation level & binary logging format.
-        */
-        mixed_unsafe= TRUE;
+    bool multi_stmt_trans= in_multi_stmt_transaction_mode();
+    bool trans_table= trans_has_updated_trans_table(this);
+    bool binlog_direct= variables.binlog_direct_non_trans_update;
 
-      if (trans_has_updated_trans_table(this))
-      {
-        /* Case 6. */
-        if (lex->stmt_accessed_table(LEX::STMT_WRITES_NON_TRANS_TABLE) &&
-            lex->stmt_accessed_table(LEX::STMT_READS_TRANS_TABLE))
-          mixed_unsafe= TRUE;
-        /* Case 7. */
-        else if (lex->stmt_accessed_table(LEX::STMT_WRITES_NON_TRANS_TABLE) &&
-                 lex->stmt_accessed_table(LEX::STMT_READS_TEMP_TRANS_TABLE))
-          mixed_unsafe= TRUE;
-        /* Case 8. */
-        else if (lex->stmt_accessed_table(LEX::STMT_WRITES_NON_TRANS_TABLE) &&
-                 lex->stmt_accessed_table(LEX::STMT_READS_TEMP_NON_TRANS_TABLE))
-          mixed_unsafe= TRUE;
-        /* Case 9. */
-        else if (lex->stmt_accessed_table(LEX::STMT_WRITES_TEMP_NON_TRANS_TABLE) &&
-                 lex->stmt_accessed_table(LEX::STMT_WRITES_NON_TRANS_TABLE))
-          mixed_unsafe= TRUE;
-        /* Case 10. */
-        else if (lex->stmt_accessed_table(LEX::STMT_WRITES_TEMP_NON_TRANS_TABLE) &&
-                 lex->stmt_accessed_table(LEX::STMT_READS_NON_TRANS_TABLE))
-        mixed_unsafe= TRUE;
-        /* Case 11. */
-        else if (!variables.binlog_direct_non_trans_update &&
-                 lex->stmt_accessed_table(LEX::STMT_WRITES_NON_TRANS_TABLE))
-          non_trans_unsafe= TRUE;
-      }
-
-      if (mixed_unsafe)
-        lex->set_stmt_unsafe(LEX::BINLOG_STMT_UNSAFE_MIXED_STATEMENT);
-      else if (non_trans_unsafe)
-        lex->set_stmt_unsafe(LEX::BINLOG_STMT_UNSAFE_NONTRANS_AFTER_TRANS);
-    }
+    if (lex->is_mixed_stmt_unsafe(multi_stmt_trans, binlog_direct,
+                                  trans_table, tx_isolation))
+      lex->set_stmt_unsafe(LEX::BINLOG_STMT_UNSAFE_MIXED_STATEMENT);
+    else if (multi_stmt_trans && trans_table && !binlog_direct &&
+             lex->stmt_accessed_table(LEX::STMT_WRITES_NON_TRANS_TABLE))
+      lex->set_stmt_unsafe(LEX::BINLOG_STMT_UNSAFE_NONTRANS_AFTER_TRANS);
 
     /*
       If more than one engine is involved in the statement and at
diff --git a/sql/sql_class.h b/sql/sql_class.h
index c9d62c1fa01..e86e42dc094 100644
--- a/sql/sql_class.h
+++ b/sql/sql_class.h
@@ -1501,7 +1501,7 @@ public:
   // track down slow pthread_create
   ulonglong  prior_thr_create_utime, thr_create_utime;
   ulonglong  start_utime, utime_after_lock;
-  
+
   thr_lock_type update_lock_default;
   Delayed_insert *di;
 
diff --git a/sql/sql_handler.cc b/sql/sql_handler.cc
index f1dddbb2eb5..a5c126a8521 100644
--- a/sql/sql_handler.cc
+++ b/sql/sql_handler.cc
@@ -934,7 +934,7 @@ void mysql_ha_flush(THD *thd)
         ((hash_tables->table->mdl_ticket &&
          hash_tables->table->mdl_ticket->has_pending_conflicting_lock()) ||
          (!hash_tables->table->s->tmp_table &&
-          hash_tables->table->s->needs_reopen())))
+          hash_tables->table->s->has_old_version())))
       mysql_ha_close_table(thd, hash_tables);
   }
 
diff --git a/sql/sql_insert.cc b/sql/sql_insert.cc
index 326a5defa9b..5f6ab43e2ea 100644
--- a/sql/sql_insert.cc
+++ b/sql/sql_insert.cc
@@ -548,10 +548,25 @@ bool open_and_lock_for_insert_delayed(THD *thd, TABLE_LIST *table_list)
     DBUG_RETURN(TRUE);
   }
 
-  if (delayed_get_table(thd, table_list))
+  /*
+    In order for the deadlock detector to be able to find any deadlocks
+    caused by the handler thread locking this table, we take the metadata
+    lock inside the connection thread. If this goes ok, the ticket is cloned
+    and added to the list of granted locks held by the handler thread.
+  */
+  MDL_ticket *mdl_savepoint= thd->mdl_context.mdl_savepoint();
+  if (thd->mdl_context.acquire_lock(&table_list->mdl_request,
+                                    thd->variables.lock_wait_timeout))
+    /*
+      If a lock can't be acquired, it makes no sense to try normal insert.
+      Therefore we just abort the statement.
+    */
     DBUG_RETURN(TRUE);
 
-  if (table_list->table)
+  bool error= FALSE;
+  if (delayed_get_table(thd, table_list))
+    error= TRUE;
+  else if (table_list->table)
   {
     /*
       Open tables used for sub-selects or in stored functions, will also
@@ -560,16 +575,36 @@ bool open_and_lock_for_insert_delayed(THD *thd, TABLE_LIST *table_list)
     if (open_and_lock_tables(thd, table_list->next_global, TRUE, 0))
     {
       end_delayed_insert(thd);
-      DBUG_RETURN(TRUE);
+      error= TRUE;
+    }
+    else
+    {
+      /*
+        First table was not processed by open_and_lock_tables(),
+        we need to set updatability flag "by hand".
+      */
+      if (!table_list->derived && !table_list->view)
+        table_list->updatable= 1;  // usual table
     }
-    /*
-      First table was not processed by open_and_lock_tables(),
-      we need to set updatability flag "by hand".
-    */
-    if (!table_list->derived && !table_list->view)
-      table_list->updatable= 1;  // usual table
-    DBUG_RETURN(FALSE);
   }
+
+  /*
+    If a lock was acquired above, we should release it after
+    handle_delayed_insert() has cloned the ticket. Note that acquire_lock() can
+    succeed because the connection already has the lock. In this case the ticket
+    will be before the mdl_savepoint and we should not release it here.
+  */
+  if (!thd->mdl_context.has_lock(mdl_savepoint, table_list->mdl_request.ticket))
+    thd->mdl_context.release_lock(table_list->mdl_request.ticket);
+
+  /*
+    Reset the ticket in case we end up having to use normal insert and
+    therefore will reopen the table and reacquire the metadata lock.
+  */
+  table_list->mdl_request.ticket= NULL;
+
+  if (error || table_list->table)
+    DBUG_RETURN(error);
 #endif
   /*
     * This is embedded library and we don't have auxiliary
@@ -1801,14 +1836,25 @@ public:
   mysql_cond_t cond, cond_client;
   volatile uint tables_in_use,stacked_inserts;
   volatile bool status;
+  /*
+    When the handler thread starts, it clones a metadata lock ticket
+    for the table to be inserted. This is done to allow the deadlock
+    detector to detect deadlocks resulting from this lock.
+    Before this is done, the connection thread cannot safely exit
+    without causing problems for clone_ticket().
+    Once handler_thread_initialized has been set, it is safe for the
+    connection thread to exit.
+    Access to handler_thread_initialized is protected by di->mutex.
+  */
+  bool handler_thread_initialized;
   COPY_INFO info;
   I_List<delayed_row> rows;
   ulong group_count;
   TABLE_LIST table_list;			// Argument
 
   Delayed_insert()
-    :locks_in_memory(0),
-     table(0),tables_in_use(0),stacked_inserts(0), status(0), group_count(0)
+    :locks_in_memory(0), table(0),tables_in_use(0),stacked_inserts(0),
+     status(0), handler_thread_initialized(FALSE), group_count(0)
   {
     DBUG_ENTER("Delayed_insert constructor");
     thd.security_ctx->user=thd.security_ctx->priv_user=(char*) delayed_user;
@@ -2025,6 +2071,10 @@ bool delayed_get_table(THD *thd, TABLE_LIST *table_list)
       /* Replace volatile strings with local copies */
       di->table_list.alias= di->table_list.table_name= di->thd.query();
       di->table_list.db= di->thd.db;
+      /* We need the ticket so that it can be cloned in handle_delayed_insert */
+      init_mdl_requests(&di->table_list);
+      di->table_list.mdl_request.ticket= table_list->mdl_request.ticket;
+
       di->lock();
       mysql_mutex_lock(&di->mutex);
       if ((error= mysql_thread_create(key_thread_delayed_insert,
@@ -2041,9 +2091,15 @@ bool delayed_get_table(THD *thd, TABLE_LIST *table_list)
         goto end_create;
       }
 
-      /* Wait until table is open */
+      /*
+        Wait until table is open unless the handler thread or the connection
+        thread has been killed. Note that we in all cases must wait until the
+        handler thread has been properly initialized before exiting. Otherwise
+        we risk doing clone_ticket() on a ticket that is no longer valid.
+      */
       thd_proc_info(thd, "waiting for handler open");
-      while (!di->thd.killed && !di->table && !thd->killed)
+      while (!di->handler_thread_initialized ||
+             (!di->thd.killed && !di->table && !thd->killed))
       {
         mysql_cond_wait(&di->cond_client, &di->mutex);
       }
@@ -2471,6 +2527,7 @@ pthread_handler_t handle_delayed_insert(void *arg)
     /* Can't use my_error since store_globals has not yet been called */
     thd->stmt_da->set_error_status(thd, ER_OUT_OF_RESOURCES,
                                    ER(ER_OUT_OF_RESOURCES), NULL);
+    di->handler_thread_initialized= TRUE;
   }
   else
   {
@@ -2481,6 +2538,7 @@ pthread_handler_t handle_delayed_insert(void *arg)
       /* Can't use my_error since store_globals has perhaps failed */
       thd->stmt_da->set_error_status(thd, ER_OUT_OF_RESOURCES,
                                      ER(ER_OUT_OF_RESOURCES), NULL);
+      di->handler_thread_initialized= TRUE;
       thd->fatal_error();
       goto err;
     }
@@ -2493,7 +2551,24 @@ pthread_handler_t handle_delayed_insert(void *arg)
     thd->lex->set_stmt_unsafe(LEX::BINLOG_STMT_UNSAFE_INSERT_DELAYED);
     thd->set_current_stmt_binlog_format_row_if_mixed();
 
-    init_mdl_requests(&di->table_list);
+    /*
+      Clone the ticket representing the lock on the target table for
+      the insert and add it to the list of granted metadata locks held by
+      the handler thread. This is safe since the handler thread is
+      not holding nor waiting on any metadata locks.
+    */
+    if (thd->mdl_context.clone_ticket(&di->table_list.mdl_request))
+    {
+      di->handler_thread_initialized= TRUE;
+      goto err;
+    }
+
+    /*
+      Now that the ticket has been cloned, it is safe for the connection
+      thread to exit.
+    */
+    di->handler_thread_initialized= TRUE;
+    di->table_list.mdl_request.ticket= NULL;
 
     if (di->open_and_lock_table())
       goto err;
@@ -2705,7 +2780,7 @@ bool Delayed_insert::handle_inserts(void)
 
   thd_proc_info(&thd, "insert");
   max_rows= delayed_insert_limit;
-  if (thd.killed || table->s->needs_reopen())
+  if (thd.killed || table->s->has_old_version())
   {
     thd.killed= THD::KILL_CONNECTION;
     max_rows= ULONG_MAX;                     // Do as much as possible
@@ -3579,19 +3654,8 @@ static TABLE *create_table_from_items(THD *thd, HA_CREATE_INFO *create_info,
     if (!mysql_create_table_no_lock(thd, create_table->db,
                                     create_table->table_name,
                                     create_info, alter_info, 0,
-                                    select_field_count))
+                                    select_field_count, NULL))
     {
-      if (create_info->table_existed)
-      {
-        /*
-          This means that someone created table underneath server
-          or it was created via different mysqld front-end to the
-          cluster. We don't have much options but throw an error.
-        */
-        my_error(ER_TABLE_EXISTS_ERROR, MYF(0), create_table->table_name);
-        DBUG_RETURN(0);
-      }
-
       DBUG_EXECUTE_IF("sleep_create_select_before_open", my_sleep(6000000););
 
       if (!(create_info->options & HA_LEX_CREATE_TMP_TABLE))
@@ -3603,11 +3667,9 @@ static TABLE *create_table_from_items(THD *thd, HA_CREATE_INFO *create_info,
         */
         if (open_table(thd, create_table, thd->mem_root, &ot_ctx))
         {
-          mysql_mutex_lock(&LOCK_open);
           quick_rm_table(create_info->db_type, create_table->db,
                          table_case_name(create_info, create_table->table_name),
                          0);
-          mysql_mutex_unlock(&LOCK_open);
         }
         else
           table= create_table->table;
@@ -3622,7 +3684,7 @@ static TABLE *create_table_from_items(THD *thd, HA_CREATE_INFO *create_info,
             it preparable for open. But let us do close_temporary_table() here
             just in case.
           */
-          drop_temporary_table(thd, create_table);
+          drop_temporary_table(thd, create_table, NULL);
         }
         else
           table= create_table->table;
@@ -3709,15 +3771,13 @@ select_create::prepare(List<Item> &values, SELECT_LEX_UNIT *u)
 
       TABLE const *const table = *tables;
       if (thd->is_current_stmt_binlog_format_row()  &&
-          !table->s->tmp_table &&
-          !ptr->get_create_info()->table_existed)
+          !table->s->tmp_table)
       {
         if (int error= ptr->binlog_show_create_table(tables, count))
           return error;
       }
       return 0;
     }
-
     select_create *ptr;
     TABLE_LIST *create_table;
     TABLE_LIST *select_tables;
@@ -3740,34 +3800,15 @@ select_create::prepare(List<Item> &values, SELECT_LEX_UNIT *u)
     thd->binlog_start_trans_and_stmt();
   }
 
+  DBUG_ASSERT(create_table->table == NULL);
+
   DBUG_EXECUTE_IF("sleep_create_select_before_check_if_exists", my_sleep(6000000););
 
-  if (create_table->table)
-  {
-    /* Table already exists and was open at open_and_lock_tables() stage. */
-    if (create_info->options & HA_LEX_CREATE_IF_NOT_EXISTS)
-    {
-      /* Mark that table existed */
-      create_info->table_existed= 1;
-      push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_NOTE,
-                          ER_TABLE_EXISTS_ERROR, ER(ER_TABLE_EXISTS_ERROR),
-                          create_table->table_name);
-      if (thd->is_current_stmt_binlog_format_row())
-        binlog_show_create_table(&(create_table->table), 1);
-      table= create_table->table;
-    }
-    else
-    {
-      my_error(ER_TABLE_EXISTS_ERROR, MYF(0), create_table->table_name);
-      DBUG_RETURN(-1);
-    }
-  }
-  else
-    if (!(table= create_table_from_items(thd, create_info, create_table,
-                                         alter_info, &values,
-                                         &extra_lock, hook_ptr)))
-      /* abort() deletes table */
-      DBUG_RETURN(-1);
+  if (!(table= create_table_from_items(thd, create_info, create_table,
+                                       alter_info, &values,
+                                       &extra_lock, hook_ptr)))
+    /* abort() deletes table */
+    DBUG_RETURN(-1);
 
   if (extra_lock)
   {
@@ -3887,10 +3928,6 @@ void select_create::send_error(uint errcode,const char *err)
              ("Current table (at 0x%lu) %s a temporary (or non-existant) table",
               (ulong) table,
               table && !table->s->tmp_table ? "is NOT" : "is"));
-  DBUG_PRINT("info",
-             ("Table %s prior to executing this statement",
-              get_create_info()->table_existed ? "existed" : "did not exist"));
-
   /*
     This will execute any rollbacks that are necessary before writing
     the transcation cache.
@@ -3979,8 +4016,7 @@ void select_create::abort_result_set()
     table->file->extra(HA_EXTRA_NO_IGNORE_DUP_KEY);
     table->file->extra(HA_EXTRA_WRITE_CANNOT_REPLACE);
     table->auto_increment_field_not_null= FALSE;
-    if (!create_info->table_existed)
-      drop_open_table(thd, table, create_table->db, create_table->table_name);
+    drop_open_table(thd, table, create_table->db, create_table->table_name);
     table=0;                                    // Safety
   }
   DBUG_VOID_RETURN;
diff --git a/sql/sql_lex.cc b/sql/sql_lex.cc
index 1d288f3de20..ba508783133 100644
--- a/sql/sql_lex.cc
+++ b/sql/sql_lex.cc
@@ -401,6 +401,7 @@ void lex_start(THD *thd)
   lex->spname= NULL;
   lex->sphead= NULL;
   lex->spcont= NULL;
+  lex->m_stmt= NULL;
   lex->proc_list.first= 0;
   lex->escape_used= FALSE;
   lex->query_tables= 0;
@@ -2297,7 +2298,7 @@ void Query_tables_list::reset_query_tables_list(bool init)
   sroutines_list_own_last= sroutines_list.next;
   sroutines_list_own_elements= 0;
   binlog_stmt_flags= 0;
-  stmt_accessed_table_flag= 0; 
+  stmt_accessed_table_flag= 0;
 }
 
 
@@ -3142,3 +3143,150 @@ bool LEX::is_partition_management() const
            alter_info.flags == ALTER_REORGANIZE_PARTITION));
 }
 
+
+#ifdef MYSQL_SERVER
+uint binlog_unsafe_map[256];
+
+#define UNSAFE(a, b, c) \
+  { \
+  DBUG_PRINT("unsafe_mixed_statement", ("SETTING BASE VALUES: %s, %s, %02X\n", \
+    LEX::stmt_accessed_table_string(a), \
+    LEX::stmt_accessed_table_string(b), \
+    c)); \
+  unsafe_mixed_statement(a, b, c); \
+  }
+
+/*
+  Sets the combination given by "a" and "b" and automatically combinations
+  given by other types of access, i.e. 2^(8 - 2), as unsafe.
+
+  It may happen a colision when automatically defining a combination as unsafe.
+  For that reason, a combination has its unsafe condition redefined only when
+  the new_condition is greater then the old. For instance,
+  
+     . (BINLOG_DIRECT_ON & TRX_CACHE_NOT_EMPTY) is never overwritten by 
+     . (BINLOG_DIRECT_ON | BINLOG_DIRECT_OFF).
+*/
+void unsafe_mixed_statement(LEX::enum_stmt_accessed_table a,
+                            LEX::enum_stmt_accessed_table b, uint condition)
+{
+  int type= 0;
+  int index= (1U << a) | (1U << b);
+  
+  
+  for (type= 0; type < 256; type++)
+  {
+    if ((type & index) == index)
+    {
+      binlog_unsafe_map[type] |= condition;
+    }
+  }
+}
+/*
+  The BINLOG_* AND TRX_CACHE_* values can be combined by using '&' or '|',
+  which means that both conditions need to be satisfied or any of them is
+  enough. For example, 
+    
+    . BINLOG_DIRECT_ON & TRX_CACHE_NOT_EMPTY means that the statment is
+    unsafe when the option is on and trx-cache is not empty;
+
+    . BINLOG_DIRECT_ON | BINLOG_DIRECT_OFF means the statement is unsafe
+    in all cases.
+
+    . TRX_CACHE_EMPTY | TRX_CACHE_NOT_EMPTY means the statement is unsafe
+    in all cases. Similar as above.
+*/
+void binlog_unsafe_map_init()
+{
+  memset((void*) binlog_unsafe_map, 0, sizeof(uint) * 256);
+
+  /*
+    Classify a statement as unsafe when there is a mixed statement and an
+    on-going transaction at any point of the execution if:
+
+      1. The mixed statement is about to update a transactional table and
+      a non-transactional table.
+
+      2. The mixed statement is about to update a transactional table and
+      read from a non-transactional table.
+
+      3. The mixed statement is about to update a non-transactional table
+      and temporary transactional table.
+
+      4. The mixed statement is about to update a temporary transactional
+      table and read from a non-transactional table.
+
+      5. The mixed statement is about to update a transactional table and
+      a temporary non-transactional table.
+     
+      6. The mixed statement is about to update a transactional table and
+      read from a temporary non-transactional table.
+
+      7. The mixed statement is about to update a temporary transactional
+      table and temporary non-transactional table.
+
+      8. The mixed statement is about to update a temporary transactional
+      table and read from a temporary non-transactional table.
+
+    After updating a transactional table if:
+
+      9. The mixed statement is about to update a non-transactional table
+      and read from a transactional table.
+
+      10. The mixed statement is about to update a non-transactional table
+      and read from a temporary transactional table.
+
+      11. The mixed statement is about to update a temporary non-transactional
+      table and read from a transactional table.
+      
+      12. The mixed statement is about to update a temporary non-transactional
+      table and read from a temporary transactional table.
+
+      13. The mixed statement is about to update a temporary non-transactional
+      table and read from a non-transactional table.
+
+    The reason for this is that locks acquired may not protected a concurrent
+    transaction of interfering in the current execution and by consequence in
+    the result.
+  */
+  /* Case 1. */
+  UNSAFE(LEX::STMT_WRITES_TRANS_TABLE, LEX::STMT_WRITES_NON_TRANS_TABLE,
+    BINLOG_DIRECT_ON | BINLOG_DIRECT_OFF);
+  /* Case 2. */
+  UNSAFE(LEX::STMT_WRITES_TRANS_TABLE, LEX::STMT_READS_NON_TRANS_TABLE,
+    BINLOG_DIRECT_ON | BINLOG_DIRECT_OFF);
+  /* Case 3. */
+  UNSAFE(LEX::STMT_WRITES_NON_TRANS_TABLE, LEX::STMT_WRITES_TEMP_TRANS_TABLE,
+    BINLOG_DIRECT_ON | BINLOG_DIRECT_OFF);
+  /* Case 4. */
+  UNSAFE(LEX::STMT_WRITES_TEMP_TRANS_TABLE, LEX::STMT_READS_NON_TRANS_TABLE,
+    BINLOG_DIRECT_ON | BINLOG_DIRECT_OFF);
+  /* Case 5. */
+  UNSAFE(LEX::STMT_WRITES_TRANS_TABLE, LEX::STMT_WRITES_TEMP_NON_TRANS_TABLE,
+    BINLOG_DIRECT_ON);
+  /* Case 6. */
+  UNSAFE(LEX::STMT_WRITES_TRANS_TABLE, LEX::STMT_READS_TEMP_NON_TRANS_TABLE,
+    BINLOG_DIRECT_ON);
+  /* Case 7. */
+  UNSAFE(LEX::STMT_WRITES_TEMP_TRANS_TABLE, LEX::STMT_WRITES_TEMP_NON_TRANS_TABLE,
+    BINLOG_DIRECT_ON);
+  /* Case 8. */
+  UNSAFE(LEX::STMT_WRITES_TEMP_TRANS_TABLE, LEX::STMT_READS_TEMP_NON_TRANS_TABLE,
+    BINLOG_DIRECT_ON);
+  /* Case 9. */
+  UNSAFE(LEX::STMT_WRITES_NON_TRANS_TABLE, LEX::STMT_READS_TRANS_TABLE,
+    (BINLOG_DIRECT_ON | BINLOG_DIRECT_OFF) & TRX_CACHE_NOT_EMPTY);
+  /* Case 10 */
+  UNSAFE(LEX::STMT_WRITES_NON_TRANS_TABLE, LEX::STMT_READS_TEMP_TRANS_TABLE,
+    (BINLOG_DIRECT_ON | BINLOG_DIRECT_OFF) & TRX_CACHE_NOT_EMPTY);
+  /* Case 11. */
+  UNSAFE(LEX::STMT_WRITES_TEMP_NON_TRANS_TABLE, LEX::STMT_READS_TRANS_TABLE,
+    BINLOG_DIRECT_ON & TRX_CACHE_NOT_EMPTY);
+  /* Case 12. */
+  UNSAFE(LEX::STMT_WRITES_TEMP_NON_TRANS_TABLE, LEX::STMT_READS_TEMP_TRANS_TABLE,
+    BINLOG_DIRECT_ON & TRX_CACHE_NOT_EMPTY);
+  /* Case 13. */
+  UNSAFE(LEX::STMT_WRITES_TEMP_NON_TRANS_TABLE, LEX::STMT_READS_NON_TRANS_TABLE,
+     BINLOG_DIRECT_OFF & TRX_CACHE_NOT_EMPTY);
+}
+#endif
diff --git a/sql/sql_lex.h b/sql/sql_lex.h
index e6c4e69d1a6..121b7622597 100644
--- a/sql/sql_lex.h
+++ b/sql/sql_lex.h
@@ -47,6 +47,53 @@ class Key;
 class File_parser;
 class Key_part_spec;
 
+#ifdef MYSQL_SERVER
+/*
+  There are 8 different type of table access so there is no more than
+  combinations 2^8 = 256:
+
+  . STMT_READS_TRANS_TABLE
+
+  . STMT_READS_NON_TRANS_TABLE
+
+  . STMT_READS_TEMP_TRANS_TABLE
+
+  . STMT_READS_TEMP_NON_TRANS_TABLE
+
+  . STMT_WRITES_TRANS_TABLE
+
+  . STMT_WRITES_NON_TRANS_TABLE
+
+  . STMT_WRITES_TEMP_TRANS_TABLE
+
+  . STMT_WRITES_TEMP_NON_TRANS_TABLE
+
+  The unsafe conditions for each combination is represented within a byte
+  and stores the status of the option --binlog-direct-non-trans-updates,
+  whether the trx-cache is empty or not, and whether the isolation level
+  is lower than ISO_REPEATABLE_READ:
+
+  . option (OFF/ON)
+  . trx-cache (empty/not empty)
+  . isolation (>= ISO_REPEATABLE_READ / < ISO_REPEATABLE_READ)
+
+  bits 0 : . OFF, . empty, . >= ISO_REPEATABLE_READ
+  bits 1 : . OFF, . empty, . < ISO_REPEATABLE_READ
+  bits 2 : . OFF, . not empty, . >= ISO_REPEATABLE_READ
+  bits 3 : . OFF, . not empty, . < ISO_REPEATABLE_READ
+  bits 4 : . ON, . empty, . >= ISO_REPEATABLE_READ
+  bits 5 : . ON, . empty, . < ISO_REPEATABLE_READ
+  bits 6 : . ON, . not empty, . >= ISO_REPEATABLE_READ
+  bits 7 : . ON, . not empty, . < ISO_REPEATABLE_READ
+*/
+extern uint binlog_unsafe_map[256];
+/*
+  Initializes the array with unsafe combinations and its respective
+  conditions.
+*/
+void binlog_unsafe_map_init();
+#endif
+
 /**
   used by the parser to store internal variable name
 */
@@ -919,6 +966,24 @@ enum enum_alter_table_change_level
   ALTER_TABLE_INDEX_CHANGED= 2
 };
 
+
+/**
+  Temporary hack to enable a class bound forward declaration
+  of the enum_alter_table_change_level enumeration. To be
+  removed once Alter_info is moved to the sql_alter.h
+  header.
+*/
+class Alter_table_change_level
+{
+private:
+  typedef enum enum_alter_table_change_level enum_type;
+  enum_type value;
+public:
+  void operator = (enum_type v) { value = v; }
+  operator enum_type () { return value; }
+};
+
+
 /**
   @brief Parsing data for CREATE or ALTER TABLE.
 
@@ -1284,33 +1349,33 @@ public:
     */
     STMT_READS_TRANS_TABLE= 0,
     /*
-       If a transactional table is about to be updated.
-    */
-    STMT_WRITES_TRANS_TABLE,
-    /*
        If a non-transactional table is about to be read. Note that
        a write implies a read.
     */
     STMT_READS_NON_TRANS_TABLE,
     /*
-       If a non-transactional table is about to be updated.
-    */
-    STMT_WRITES_NON_TRANS_TABLE,
-    /*
        If a temporary transactional table is about to be read. Note
        that a write implies a read.
     */
     STMT_READS_TEMP_TRANS_TABLE,
     /*
-       If a temporary transactional table is about to be updated.
-    */
-    STMT_WRITES_TEMP_TRANS_TABLE,
-    /*
        If a temporary non-transactional table is about to be read. Note
       that a write implies a read.
     */
     STMT_READS_TEMP_NON_TRANS_TABLE,
     /*
+       If a transactional table is about to be updated.
+    */
+    STMT_WRITES_TRANS_TABLE,
+    /*
+       If a non-transactional table is about to be updated.
+    */
+    STMT_WRITES_NON_TRANS_TABLE,
+    /*
+       If a temporary transactional table is about to be updated.
+    */
+    STMT_WRITES_TEMP_TRANS_TABLE,
+    /*
        If a temporary non-transactional table is about to be updated.
     */
     STMT_WRITES_TEMP_NON_TRANS_TABLE,
@@ -1320,7 +1385,58 @@ public:
     */
     STMT_ACCESS_TABLE_COUNT
   };
+
+  static inline const char *stmt_accessed_table_string(enum_stmt_accessed_table accessed_table)
+  {
+    switch (accessed_table)
+    {
+      case STMT_READS_TRANS_TABLE:
+         return "STMT_READS_TRANS_TABLE";
+      break;
+      case STMT_READS_NON_TRANS_TABLE:
+        return "STMT_READS_NON_TRANS_TABLE";
+      break;
+      case STMT_READS_TEMP_TRANS_TABLE:
+        return "STMT_READS_TEMP_TRANS_TABLE";
+      break;
+      case STMT_READS_TEMP_NON_TRANS_TABLE:
+        return "STMT_READS_TEMP_NON_TRANS_TABLE";
+      break;  
+      case STMT_WRITES_TRANS_TABLE:
+        return "STMT_WRITES_TRANS_TABLE";
+      break;
+      case STMT_WRITES_NON_TRANS_TABLE:
+        return "STMT_WRITES_NON_TRANS_TABLE";
+      break;
+      case STMT_WRITES_TEMP_TRANS_TABLE:
+        return "STMT_WRITES_TEMP_TRANS_TABLE";
+      break;
+      case STMT_WRITES_TEMP_NON_TRANS_TABLE:
+        return "STMT_WRITES_TEMP_NON_TRANS_TABLE";
+      break;
+      case STMT_ACCESS_TABLE_COUNT:
+      default:
+        DBUG_ASSERT(0);
+      break;
+    }
+  }
                
+  #define BINLOG_DIRECT_ON 0xF0    /* unsafe when
+                                      --binlog-direct-non-trans-updates
+                                      is ON */
+
+  #define BINLOG_DIRECT_OFF 0xF    /* unsafe when
+                                      --binlog-direct-non-trans-updates
+                                      is OFF */
+
+  #define TRX_CACHE_EMPTY 0x33     /* unsafe when trx-cache is empty */
+
+  #define TRX_CACHE_NOT_EMPTY 0xCC /* unsafe when trx-cache is not empty */
+
+  #define IL_LT_REPEATABLE 0xAA    /* unsafe when < ISO_REPEATABLE_READ */
+
+  #define IL_GTE_REPEATABLE 0x55   /* unsafe when >= ISO_REPEATABLE_READ */
+  
   /**
     Sets the type of table that is about to be accessed while executing a
     statement.
@@ -1330,7 +1446,7 @@ public:
   */
   inline void set_stmt_accessed_table(enum_stmt_accessed_table accessed_table)
   {
-    DBUG_ENTER("THD::set_stmt_accessed_table");
+    DBUG_ENTER("LEX::set_stmt_accessed_table");
 
     DBUG_ASSERT(accessed_table >= 0 && accessed_table < STMT_ACCESS_TABLE_COUNT);
     stmt_accessed_table_flag |= (1U << accessed_table);
@@ -1343,7 +1459,7 @@ public:
     statement.
 
     @param accessed_table Enumeration type that defines the type of table,
-                           e.g. temporary, transactional, non-transactional.
+           e.g. temporary, transactional, non-transactional.
 
     @return
       @retval TRUE  if the type of the table is about to be accessed
@@ -1351,7 +1467,7 @@ public:
   */
   inline bool stmt_accessed_table(enum_stmt_accessed_table accessed_table)
   {
-    DBUG_ENTER("THD::stmt_accessed_table");
+    DBUG_ENTER("LEX::stmt_accessed_table");
 
     DBUG_ASSERT(accessed_table >= 0 && accessed_table < STMT_ACCESS_TABLE_COUNT);
 
@@ -1359,40 +1475,79 @@ public:
   }
 
   /**
-    Checks if a temporary table is about to be accessed while executing a
-    statement.
+    Checks if a temporary non-transactional table is about to be accessed
+    while executing a statement.
 
     @return
-      @retval TRUE  if a temporary table is about to be accessed
+      @retval TRUE  if a temporary non-transactional table is about to be
+                    accessed
       @retval FALSE otherwise
   */
-  inline bool stmt_accessed_temp_table()
+  inline bool stmt_accessed_non_trans_temp_table()
   {
-    DBUG_ENTER("THD::stmt_accessed_temp_table");
+    DBUG_ENTER("THD::stmt_accessed_non_trans_temp_table");
 
     DBUG_RETURN((stmt_accessed_table_flag &
-                ((1U << STMT_READS_TEMP_TRANS_TABLE) |
-                 (1U << STMT_WRITES_TEMP_TRANS_TABLE) |
-                 (1U << STMT_READS_TEMP_NON_TRANS_TABLE) |
+                ((1U << STMT_READS_TEMP_NON_TRANS_TABLE) |
                  (1U << STMT_WRITES_TEMP_NON_TRANS_TABLE))) != 0);
   }
 
-  /**
-    Checks if a temporary non-transactional table is about to be accessed
-    while executing a statement.
+  /*
+    Checks if a mixed statement is unsafe.
 
+    
+    @param in_multi_stmt_transaction_mode defines if there is an on-going
+           multi-transactional statement.
+    @param binlog_direct defines if --binlog-direct-non-trans-updates is
+           active.
+    @param trx_cache_is_not_empty defines if the trx-cache is empty or not.
+    @param trx_isolation defines the isolation level.
+ 
     @return
-      @retval TRUE  if a temporary non-transactional table is about to be
-                    accessed
+      @retval TRUE if the mixed statement is unsafe
       @retval FALSE otherwise
   */
-  inline bool stmt_accessed_non_trans_temp_table()
+  inline bool is_mixed_stmt_unsafe(bool in_multi_stmt_transaction_mode,
+                                   bool binlog_direct,
+                                   bool trx_cache_is_not_empty,
+                                   uint tx_isolation)
   {
-    DBUG_ENTER("THD::stmt_accessed_non_trans_temp_table");
+    bool unsafe= FALSE;
 
-    DBUG_RETURN((stmt_accessed_table_flag &
-                ((1U << STMT_READS_TEMP_NON_TRANS_TABLE) |
-                 (1U << STMT_WRITES_TEMP_NON_TRANS_TABLE))) != 0);
+    if (in_multi_stmt_transaction_mode)
+    {
+       uint condition=
+         (binlog_direct ? BINLOG_DIRECT_ON : BINLOG_DIRECT_OFF) &
+         (trx_cache_is_not_empty ? TRX_CACHE_NOT_EMPTY : TRX_CACHE_EMPTY) &
+         (tx_isolation >= ISO_REPEATABLE_READ ? IL_GTE_REPEATABLE : IL_LT_REPEATABLE);
+
+      unsafe= (binlog_unsafe_map[stmt_accessed_table_flag] & condition);
+
+#if !defined(DBUG_OFF)
+      DBUG_PRINT("LEX::is_mixed_stmt_unsafe", ("RESULT %02X %02X %02X\n", condition,
+              binlog_unsafe_map[stmt_accessed_table_flag],
+              (binlog_unsafe_map[stmt_accessed_table_flag] & condition)));
+ 
+      int type_in= 0;
+      for (; type_in < STMT_ACCESS_TABLE_COUNT; type_in++)
+      {
+        if (stmt_accessed_table((enum_stmt_accessed_table) type_in))
+          DBUG_PRINT("LEX::is_mixed_stmt_unsafe", ("ACCESSED %s ",
+                  stmt_accessed_table_string((enum_stmt_accessed_table) type_in)));
+      }
+#endif
+    }
+
+    if (stmt_accessed_table(STMT_WRITES_NON_TRANS_TABLE) &&
+      stmt_accessed_table(STMT_READS_TRANS_TABLE) &&
+      tx_isolation < ISO_REPEATABLE_READ)
+      unsafe= TRUE;
+    else if (stmt_accessed_table(STMT_WRITES_TEMP_NON_TRANS_TABLE) &&
+      stmt_accessed_table(STMT_READS_TRANS_TABLE) &&
+      tx_isolation < ISO_REPEATABLE_READ)
+      unsafe= TRUE;
+
+    return(unsafe);
   }
 
   /**
diff --git a/sql/sql_parse.cc b/sql/sql_parse.cc
index fbcfb3f49c2..b78815f0e52 100644
--- a/sql/sql_parse.cc
+++ b/sql/sql_parse.cc
@@ -50,6 +50,8 @@
                               // mysql_backup_table,
                               // mysql_restore_table
 #include "sql_truncate.h"     // mysql_truncate_table
+#include "sql_reload.h"       // reload_acl_and_cache
+#include "sql_admin.h"        // mysql_assign_to_keycache
 #include "sql_connect.h"      // check_user,
                               // decrease_user_connections,
                               // thd_init_client_charset, check_mqh,
@@ -659,8 +661,7 @@ end:
     every child. Set 'db' for every child if not present.
 */
 #ifndef NO_EMBEDDED_ACCESS_CHECKS
-static bool check_merge_table_access(THD *thd, char *db,
-                                     TABLE_LIST *table_list)
+bool check_merge_table_access(THD *thd, char *db, TABLE_LIST *table_list)
 {
   int error= 0;
 
@@ -1696,140 +1697,6 @@ int prepare_schema_table(THD *thd, LEX *lex, Table_ident *table_ident,
 
 
 /**
-  Implementation of FLUSH TABLES <table_list> WITH READ LOCK.
-
-  In brief: take exclusive locks, expel tables from the table
-  cache, reopen the tables, enter the 'LOCKED TABLES' mode,
-  downgrade the locks.
-  Note: the function is written to be called from
-  mysql_execute_command(), it is not reusable in arbitrary
-  execution context.
-
-  Required privileges
-  -------------------
-  Since the statement implicitly enters LOCK TABLES mode,
-  it requires LOCK TABLES privilege on every table.
-  But since the rest of FLUSH commands require
-  the global RELOAD_ACL, it also requires RELOAD_ACL.
-
-  Compatibility with the global read lock
-  ---------------------------------------
-  We don't wait for the GRL, since neither the
-  5.1 combination that this new statement is intended to
-  replace (LOCK TABLE <list> WRITE; FLUSH TABLES;),
-  nor FLUSH TABLES WITH READ LOCK do.
-  @todo: this is not implemented, Dmitry disagrees.
-  Currently we wait for GRL in another connection,
-  but are compatible with a GRL in our own connection.
-
-  Behaviour under LOCK TABLES
-  ---------------------------
-  Bail out: i.e. don't perform an implicit UNLOCK TABLES.
-  This is not consistent with LOCK TABLES statement, but is
-  in line with behaviour of FLUSH TABLES WITH READ LOCK, and we
-  try to not introduce any new statements with implicit
-  semantics.
-
-  Compatibility with parallel updates
-  -----------------------------------
-  As a result, we will wait for all open transactions
-  against the tables to complete. After the lock downgrade,
-  new transactions will be able to read the tables, but not
-  write to them.
-
-  Differences from FLUSH TABLES <list>
-  -------------------------------------
-  - you can't flush WITH READ LOCK a non-existent table
-  - you can't flush WITH READ LOCK under LOCK TABLES
-  - currently incompatible with the GRL (@todo: fix)
-
-  Effect on views and temporary tables.
-  ------------------------------------
-  You can only apply this command to existing base tables.
-  If a view with such name exists, ER_WRONG_OBJECT is returned.
-  If a temporary table with such name exists, it's ignored:
-  if there is a base table, it's used, otherwise ER_NO_SUCH_TABLE
-  is returned.
-*/
-
-static bool flush_tables_with_read_lock(THD *thd, TABLE_LIST *all_tables)
-{
-  Lock_tables_prelocking_strategy lock_tables_prelocking_strategy;
-  TABLE_LIST *table_list;
-
-  /*
-    This is called from SQLCOM_FLUSH, the transaction has
-    been committed implicitly.
-  */
-
-  /* RELOAD_ACL is checked by the caller. Check table-level privileges. */
-  if (check_table_access(thd, LOCK_TABLES_ACL | SELECT_ACL, all_tables,
-                         FALSE, UINT_MAX, FALSE))
-    goto error;
-
-  if (thd->locked_tables_mode)
-  {
-    my_error(ER_LOCK_OR_ACTIVE_TRANSACTION, MYF(0));
-    goto error;
-  }
-
-  /*
-    @todo: Since lock_table_names() acquires a global IX
-    lock, this actually waits for a GRL in another connection.
-    We are thus introducing an incompatibility.
-    Do nothing for now, since not taking a global IX violates
-    current internal MDL asserts, fix after discussing with
-    Dmitry.
-  */
-  if (lock_table_names(thd, all_tables, 0, thd->variables.lock_wait_timeout,
-                       MYSQL_OPEN_SKIP_TEMPORARY))
-    goto error;
-
-  for (table_list= all_tables; table_list;
-       table_list= table_list->next_global)
-  {
-    /* Remove the table from cache. */
-    mysql_mutex_lock(&LOCK_open);
-    tdc_remove_table(thd, TDC_RT_REMOVE_ALL,
-                     table_list->db,
-                     table_list->table_name);
-    mysql_mutex_unlock(&LOCK_open);
-
-    /* Skip views and temporary tables. */
-    table_list->required_type= FRMTYPE_TABLE; /* Don't try to flush views. */
-    table_list->open_type= OT_BASE_ONLY;      /* Ignore temporary tables. */
-  }
-
-  if  (open_and_lock_tables(thd, all_tables, FALSE,
-                            MYSQL_OPEN_HAS_MDL_LOCK,
-                            &lock_tables_prelocking_strategy) ||
-       thd->locked_tables_list.init_locked_tables(thd))
-  {
-    goto error;
-  }
-  thd->variables.option_bits|= OPTION_TABLE_LOCK;
-
-  /*
-    Downgrade the exclusive locks.
-    Use MDL_SHARED_NO_WRITE as the intended
-    post effect of this call is identical
-    to LOCK TABLES <...> READ, and we didn't use
-    thd->in_lock_talbes and thd->sql_command= SQLCOM_LOCK_TABLES
-    hacks to enter the LTM.
-    @todo: release the global IX lock here!!!
-  */
-  for (table_list= all_tables; table_list;
-       table_list= table_list->next_global)
-    table_list->mdl_request.ticket->downgrade_exclusive_lock(MDL_SHARED_NO_WRITE);
-
-  return FALSE;
-
-error:
-  return TRUE;
-}
-
-
-/**
   Read query from packet and store in thd->query.
   Used in COM_QUERY and COM_STMT_PREPARE.
 
@@ -2590,13 +2457,7 @@ case SQLCOM_PREPARE:
     }
 #endif
 
-    /* Set strategies: reset default or 'prepared' values. */
-    create_table->open_strategy= TABLE_LIST::OPEN_IF_EXISTS;
-    create_table->lock_strategy= TABLE_LIST::OTLS_DOWNGRADE_IF_EXISTS;
-
-    /*
-      Close any open handlers for the table
-    */
+    /* Close any open handlers for the table. */
     mysql_ha_rm_tables(thd, create_table);
 
     if (select_lex->item_list.elements)		// With select
@@ -2656,44 +2517,25 @@ case SQLCOM_PREPARE:
         goto end_with_restore_list;
       }
 
-      if (!(create_info.options & HA_LEX_CREATE_TMP_TABLE))
-      {
-        /* Base table and temporary table are not in the same name space. */
-        create_table->open_type= OT_BASE_ONLY;
-      }
-
       if (!(res= open_and_lock_tables(thd, lex->query_tables, TRUE, 0)))
       {
-        /*
-          Is table which we are changing used somewhere in other parts
-          of query
-        */
-        if (!(create_info.options & HA_LEX_CREATE_TMP_TABLE))
+        /* The table already exists */
+        if (create_table->table)
         {
-          TABLE_LIST *duplicate;
-          if ((duplicate= unique_table(thd, create_table, select_tables, 0)))
+          if (create_info.options & HA_LEX_CREATE_IF_NOT_EXISTS)
           {
-            update_non_unique_table_error(create_table, "CREATE", duplicate);
-            res= 1;
-            goto end_with_restore_list;
+            push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_NOTE,
+                                ER_TABLE_EXISTS_ERROR,
+                                ER(ER_TABLE_EXISTS_ERROR),
+                                create_info.alias);
+            my_ok(thd);
           }
-        }
-        /* If we create merge table, we have to test tables in merge, too */
-        if (create_info.used_fields & HA_CREATE_USED_UNION)
-        {
-          TABLE_LIST *tab;
-          for (tab= create_info.merge_list.first;
-               tab;
-               tab= tab->next_local)
+          else
           {
-            TABLE_LIST *duplicate;
-            if ((duplicate= unique_table(thd, tab, select_tables, 0)))
-            {
-              update_non_unique_table_error(tab, "CREATE", duplicate);
-              res= 1;
-              goto end_with_restore_list;
-            }
+            my_error(ER_TABLE_EXISTS_ERROR, MYF(0), create_info.alias);
+            res= 1;
           }
+          goto end_with_restore_list;
         }
 
         /*
@@ -2726,7 +2568,7 @@ case SQLCOM_PREPARE:
           res= handle_select(thd, lex, result, 0);
           delete result;
         }
-        
+
         lex->link_first_table_back(create_table, link_to_local);
       }
     }
@@ -2831,77 +2673,6 @@ end_with_restore_list:
   }
 #endif /* HAVE_REPLICATION */
 
-  case SQLCOM_ALTER_TABLE:
-    DBUG_ASSERT(first_table == all_tables && first_table != 0);
-    {
-      ulong priv=0;
-      ulong priv_needed= ALTER_ACL;
-      /*
-        Code in mysql_alter_table() may modify its HA_CREATE_INFO argument,
-        so we have to use a copy of this structure to make execution
-        prepared statement- safe. A shallow copy is enough as no memory
-        referenced from this structure will be modified.
-      */
-      HA_CREATE_INFO create_info(lex->create_info);
-      Alter_info alter_info(lex->alter_info, thd->mem_root);
-
-      if (thd->is_fatal_error) /* out of memory creating a copy of alter_info */
-        goto error;
-      /*
-        We also require DROP priv for ALTER TABLE ... DROP PARTITION, as well
-        as for RENAME TO, as being done by SQLCOM_RENAME_TABLE
-      */
-      if (alter_info.flags & (ALTER_DROP_PARTITION | ALTER_RENAME))
-        priv_needed|= DROP_ACL;
-
-      /* Must be set in the parser */
-      DBUG_ASSERT(select_lex->db);
-      if (check_access(thd, priv_needed, first_table->db,
-                       &first_table->grant.privilege,
-                       &first_table->grant.m_internal,
-                       0, 0) ||
-          check_access(thd, INSERT_ACL | CREATE_ACL, select_lex->db,
-                       &priv,
-                       NULL, /* Do not use first_table->grant with select_lex->db */
-                       0, 0) ||
-	  check_merge_table_access(thd, first_table->db,
-				   create_info.merge_list.first))
-	goto error;				/* purecov: inspected */
-      if (check_grant(thd, priv_needed, all_tables, FALSE, UINT_MAX, FALSE))
-        goto error;
-      if (lex->name.str && !test_all_bits(priv,INSERT_ACL | CREATE_ACL))
-      { // Rename of table
-          TABLE_LIST tmp_table;
-          bzero((char*) &tmp_table,sizeof(tmp_table));
-          tmp_table.table_name= lex->name.str;
-          tmp_table.db=select_lex->db;
-          tmp_table.grant.privilege=priv;
-          if (check_grant(thd, INSERT_ACL | CREATE_ACL, &tmp_table, FALSE,
-              UINT_MAX, FALSE))
-            goto error;
-      }
-
-      /* Don't yet allow changing of symlinks with ALTER TABLE */
-      if (create_info.data_file_name)
-        push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
-                            WARN_OPTION_IGNORED, ER(WARN_OPTION_IGNORED),
-                            "DATA DIRECTORY");
-      if (create_info.index_file_name)
-        push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
-                            WARN_OPTION_IGNORED, ER(WARN_OPTION_IGNORED),
-                            "INDEX DIRECTORY");
-      create_info.data_file_name= create_info.index_file_name= NULL;
-
-      thd->enable_slow_log= opt_log_slow_admin_statements;
-      res= mysql_alter_table(thd, select_lex->db, lex->name.str,
-                             &create_info,
-                             first_table,
-                             &alter_info,
-                             select_lex->order_list.elements,
-                             select_lex->order_list.first,
-                             lex->ignore);
-      break;
-    }
   case SQLCOM_RENAME_TABLE:
   {
     DBUG_ASSERT(first_table == all_tables && first_table != 0);
@@ -3021,81 +2792,6 @@ end_with_restore_list:
     res = mysql_checksum_table(thd, first_table, &lex->check_opt);
     break;
   }
-  case SQLCOM_REPAIR:
-  {
-    DBUG_ASSERT(first_table == all_tables && first_table != 0);
-    if (check_table_access(thd, SELECT_ACL | INSERT_ACL, all_tables,
-                           FALSE, UINT_MAX, FALSE))
-      goto error; /* purecov: inspected */
-    thd->enable_slow_log= opt_log_slow_admin_statements;
-    res= mysql_repair_table(thd, first_table, &lex->check_opt);
-    /* ! we write after unlocking the table */
-    if (!res && !lex->no_write_to_binlog)
-    {
-      /*
-        Presumably, REPAIR and binlog writing doesn't require synchronization
-      */
-      res= write_bin_log(thd, TRUE, thd->query(), thd->query_length());
-    }
-    select_lex->table_list.first= first_table;
-    lex->query_tables=all_tables;
-    break;
-  }
-  case SQLCOM_CHECK:
-  {
-    DBUG_ASSERT(first_table == all_tables && first_table != 0);
-    if (check_table_access(thd, SELECT_ACL, all_tables,
-                           TRUE, UINT_MAX, FALSE))
-      goto error; /* purecov: inspected */
-    thd->enable_slow_log= opt_log_slow_admin_statements;
-    res = mysql_check_table(thd, first_table, &lex->check_opt);
-    select_lex->table_list.first= first_table;
-    lex->query_tables=all_tables;
-    break;
-  }
-  case SQLCOM_ANALYZE:
-  {
-    DBUG_ASSERT(first_table == all_tables && first_table != 0);
-    if (check_table_access(thd, SELECT_ACL | INSERT_ACL, all_tables,
-                           FALSE, UINT_MAX, FALSE))
-      goto error; /* purecov: inspected */
-    thd->enable_slow_log= opt_log_slow_admin_statements;
-    res= mysql_analyze_table(thd, first_table, &lex->check_opt);
-    /* ! we write after unlocking the table */
-    if (!res && !lex->no_write_to_binlog)
-    {
-      /*
-        Presumably, ANALYZE and binlog writing doesn't require synchronization
-      */
-      res= write_bin_log(thd, TRUE, thd->query(), thd->query_length());
-    }
-    select_lex->table_list.first= first_table;
-    lex->query_tables=all_tables;
-    break;
-  }
-
-  case SQLCOM_OPTIMIZE:
-  {
-    DBUG_ASSERT(first_table == all_tables && first_table != 0);
-    if (check_table_access(thd, SELECT_ACL | INSERT_ACL, all_tables,
-                           FALSE, UINT_MAX, FALSE))
-      goto error; /* purecov: inspected */
-    thd->enable_slow_log= opt_log_slow_admin_statements;
-    res= (specialflag & (SPECIAL_SAFE_MODE | SPECIAL_NO_NEW_FUNC)) ?
-      mysql_recreate_table(thd, first_table) :
-      mysql_optimize_table(thd, first_table, &lex->check_opt);
-    /* ! we write after unlocking the table */
-    if (!res && !lex->no_write_to_binlog)
-    {
-      /*
-        Presumably, OPTIMIZE and binlog writing doesn't require synchronization
-      */
-      res= write_bin_log(thd, TRUE, thd->query(), thd->query_length());
-    }
-    select_lex->table_list.first= first_table;
-    lex->query_tables=all_tables;
-    break;
-  }
   case SQLCOM_UPDATE:
   {
     ha_rows found= 0, updated= 0;
@@ -3316,23 +3012,6 @@ end_with_restore_list:
 
     break;
   }
-  case SQLCOM_TRUNCATE:
-    DBUG_ASSERT(first_table == all_tables && first_table != 0);
-    if (check_one_table_access(thd, DROP_ACL, all_tables))
-      goto error;
-    /*
-      Don't allow this within a transaction because we want to use
-      re-generate table
-    */
-    if (thd->in_active_multi_stmt_transaction())
-    {
-      my_message(ER_LOCK_OR_ACTIVE_TRANSACTION,
-                 ER(ER_LOCK_OR_ACTIVE_TRANSACTION), MYF(0));
-      goto error;
-    }
-    if (! (res= mysql_truncate_table(thd, first_table)))
-      my_ok(thd);
-    break;
   case SQLCOM_DELETE:
   {
     DBUG_ASSERT(first_table == all_tables && first_table != 0);
@@ -3414,7 +3093,7 @@ end_with_restore_list:
       /* So that DROP TEMPORARY TABLE gets to binlog at commit/rollback */
       thd->variables.option_bits|= OPTION_KEEP_LOG;
     }
-    /* DDL and binlog write order protected by LOCK_open */
+    /* DDL and binlog write order are protected by metadata locks. */
     res= mysql_rm_table(thd, first_table, lex->drop_if_exists,
 			lex->drop_temporary);
   }
@@ -3959,6 +3638,10 @@ end_with_restore_list:
 
     if (first_table && lex->type & REFRESH_READ_LOCK)
     {
+      /* Check table-level privileges. */
+      if (check_table_access(thd, LOCK_TABLES_ACL | SELECT_ACL, all_tables,
+                             FALSE, UINT_MAX, FALSE))
+        goto error;
       if (flush_tables_with_read_lock(thd, all_tables))
         goto error;
       my_ok(thd);
@@ -4718,6 +4401,14 @@ create_sp_error:
     my_ok(thd, 1);
     break;
   }
+  case SQLCOM_ANALYZE:
+  case SQLCOM_CHECK:
+  case SQLCOM_OPTIMIZE:
+  case SQLCOM_REPAIR:
+  case SQLCOM_TRUNCATE:
+  case SQLCOM_ALTER_TABLE:
+      DBUG_ASSERT(first_table == all_tables && first_table != 0);
+    /* fall through */
   case SQLCOM_SIGNAL:
   case SQLCOM_RESIGNAL:
     DBUG_ASSERT(lex->m_stmt != NULL);
@@ -6692,258 +6383,6 @@ void add_join_natural(TABLE_LIST *a, TABLE_LIST *b, List<String> *using_fields,
 
 
 /**
-  Reload/resets privileges and the different caches.
-
-  @param thd Thread handler (can be NULL!)
-  @param options What should be reset/reloaded (tables, privileges, slave...)
-  @param tables Tables to flush (if any)
-  @param write_to_binlog True if we can write to the binlog.
-               
-  @note Depending on 'options', it may be very bad to write the
-    query to the binlog (e.g. FLUSH SLAVE); this is a
-    pointer where reload_acl_and_cache() will put 0 if
-    it thinks we really should not write to the binlog.
-    Otherwise it will put 1.
-
-  @return Error status code
-    @retval 0 Ok
-    @retval !=0  Error; thd->killed is set or thd->is_error() is true
-*/
-
-bool reload_acl_and_cache(THD *thd, ulong options, TABLE_LIST *tables,
-                          bool *write_to_binlog)
-{
-  bool result=0;
-  select_errors=0;				/* Write if more errors */
-  bool tmp_write_to_binlog= 1;
-
-  DBUG_ASSERT(!thd || !thd->in_sub_stmt);
-
-#ifndef NO_EMBEDDED_ACCESS_CHECKS
-  if (options & REFRESH_GRANT)
-  {
-    THD *tmp_thd= 0;
-    /*
-      If reload_acl_and_cache() is called from SIGHUP handler we have to
-      allocate temporary THD for execution of acl_reload()/grant_reload().
-    */
-    if (!thd && (thd= (tmp_thd= new THD)))
-    {
-      thd->thread_stack= (char*) &tmp_thd;
-      thd->store_globals();
-    }
-
-    if (thd)
-    {
-      bool reload_acl_failed= acl_reload(thd);
-      bool reload_grants_failed= grant_reload(thd);
-      bool reload_servers_failed= servers_reload(thd);
-
-      if (reload_acl_failed || reload_grants_failed || reload_servers_failed)
-      {
-        result= 1;
-        /*
-          When an error is returned, my_message may have not been called and
-          the client will hang waiting for a response.
-        */
-        my_error(ER_UNKNOWN_ERROR, MYF(0), "FLUSH PRIVILEGES failed");
-      }
-    }
-
-    if (tmp_thd)
-    {
-      delete tmp_thd;
-      /* Remember that we don't have a THD */
-      my_pthread_setspecific_ptr(THR_THD,  0);
-      thd= 0;
-    }
-    reset_mqh((LEX_USER *)NULL, TRUE);
-  }
-#endif
-  if (options & REFRESH_LOG)
-  {
-    /*
-      Flush the normal query log, the update log, the binary log,
-      the slow query log, the relay log (if it exists) and the log
-      tables.
-    */
-
-    options|= REFRESH_BINARY_LOG;
-    options|= REFRESH_RELAY_LOG;
-    options|= REFRESH_SLOW_LOG;
-    options|= REFRESH_GENERAL_LOG;
-    options|= REFRESH_ENGINE_LOG;
-    options|= REFRESH_ERROR_LOG;
-  }
-
-  if (options & REFRESH_ERROR_LOG)
-    if (flush_error_log())
-      result= 1;
-
-  if ((options & REFRESH_SLOW_LOG) && opt_slow_log)
-    logger.flush_slow_log();
-
-  if ((options & REFRESH_GENERAL_LOG) && opt_log)
-    logger.flush_general_log();
-
-  if (options & REFRESH_ENGINE_LOG)
-    if (ha_flush_logs(NULL))
-      result= 1;
-
-  if (options & REFRESH_BINARY_LOG)
-  {
-    /*
-      Writing this command to the binlog may result in infinite loops
-      when doing mysqlbinlog|mysql, and anyway it does not really make
-      sense to log it automatically (would cause more trouble to users
-      than it would help them)
-    */
-    tmp_write_to_binlog= 0;
-    if (mysql_bin_log.is_open())
-      mysql_bin_log.rotate_and_purge(RP_FORCE_ROTATE);
-  }
-  if (options & REFRESH_RELAY_LOG)
-  {
-#ifdef HAVE_REPLICATION
-    mysql_mutex_lock(&LOCK_active_mi);
-    rotate_relay_log(active_mi);
-    mysql_mutex_unlock(&LOCK_active_mi);
-#endif
-  }
-#ifdef HAVE_QUERY_CACHE
-  if (options & REFRESH_QUERY_CACHE_FREE)
-  {
-    query_cache.pack();				// FLUSH QUERY CACHE
-    options &= ~REFRESH_QUERY_CACHE;    // Don't flush cache, just free memory
-  }
-  if (options & (REFRESH_TABLES | REFRESH_QUERY_CACHE))
-  {
-    query_cache.flush();			// RESET QUERY CACHE
-  }
-#endif /*HAVE_QUERY_CACHE*/
-
-  DBUG_ASSERT(!thd || thd->locked_tables_mode ||
-              !thd->mdl_context.has_locks() ||
-              thd->handler_tables_hash.records ||
-              thd->global_read_lock.is_acquired());
-
-  /*
-    Note that if REFRESH_READ_LOCK bit is set then REFRESH_TABLES is set too
-    (see sql_yacc.yy)
-  */
-  if (options & (REFRESH_TABLES | REFRESH_READ_LOCK)) 
-  {
-    if ((options & REFRESH_READ_LOCK) && thd)
-    {
-      /*
-        On the first hand we need write lock on the tables to be flushed,
-        on the other hand we must not try to aspire a global read lock
-        if we have a write locked table as this would lead to a deadlock
-        when trying to reopen (and re-lock) the table after the flush.
-      */
-      if (thd->locked_tables_mode)
-      {
-        my_error(ER_LOCK_OR_ACTIVE_TRANSACTION, MYF(0));
-        return 1;
-      }
-      /*
-	Writing to the binlog could cause deadlocks, as we don't log
-	UNLOCK TABLES
-      */
-      tmp_write_to_binlog= 0;
-      if (thd->global_read_lock.lock_global_read_lock(thd))
-	return 1;                               // Killed
-      if (close_cached_tables(thd, tables, FALSE, (options & REFRESH_FAST) ?
-                              FALSE : TRUE))
-          result= 1;
-      
-      if (thd->global_read_lock.make_global_read_lock_block_commit(thd)) // Killed
-      {
-        /* Don't leave things in a half-locked state */
-        thd->global_read_lock.unlock_global_read_lock(thd);
-        return 1;
-      }
-    }
-    else
-    {
-      if (thd && thd->locked_tables_mode)
-      {
-        /*
-          If we are under LOCK TABLES we should have a write
-          lock on tables which we are going to flush.
-        */
-        if (tables)
-        {
-          for (TABLE_LIST *t= tables; t; t= t->next_local)
-            if (!find_table_for_mdl_upgrade(thd->open_tables, t->db,
-                                            t->table_name, FALSE))
-              return 1;
-        }
-        else
-        {
-          for (TABLE *tab= thd->open_tables; tab; tab= tab->next)
-          {
-            if (! tab->mdl_ticket->is_upgradable_or_exclusive())
-            {
-              my_error(ER_TABLE_NOT_LOCKED_FOR_WRITE, MYF(0),
-                       tab->s->table_name.str);
-              return 1;
-            }
-          }
-        }
-      }
-
-      if (close_cached_tables(thd, tables, FALSE, (options & REFRESH_FAST) ?
-                              FALSE : TRUE))
-        result= 1;
-    }
-    my_dbopt_cleanup();
-  }
-  if (options & REFRESH_HOSTS)
-    hostname_cache_refresh();
-  if (thd && (options & REFRESH_STATUS))
-    refresh_status(thd);
-  if (options & REFRESH_THREADS)
-    flush_thread_cache();
-#ifdef HAVE_REPLICATION
-  if (options & REFRESH_MASTER)
-  {
-    DBUG_ASSERT(thd);
-    tmp_write_to_binlog= 0;
-    if (reset_master(thd))
-    {
-      result=1;
-    }
-  }
-#endif
-#ifdef OPENSSL
-   if (options & REFRESH_DES_KEY_FILE)
-   {
-     if (des_key_file && load_des_key_file(des_key_file))
-         result= 1;
-   }
-#endif
-#ifdef HAVE_REPLICATION
- if (options & REFRESH_SLAVE)
- {
-   tmp_write_to_binlog= 0;
-   mysql_mutex_lock(&LOCK_active_mi);
-   if (reset_slave(thd, active_mi))
-     result=1;
-   mysql_mutex_unlock(&LOCK_active_mi);
- }
-#endif
- if (options & REFRESH_USER_RESOURCES)
-   reset_mqh((LEX_USER *) NULL, 0);             /* purecov: inspected */
- *write_to_binlog= tmp_write_to_binlog;
- /*
-   If the query was killed then this function must fail.
- */
- return result || (thd ? thd->killed : 0);
-}
-
-
-/**
   kill on thread.
 
   @param thd			Thread class
@@ -7474,7 +6913,7 @@ void create_table_set_open_action_and_adjust_tables(LEX *lex)
 
   if (lex->create_info.options & HA_LEX_CREATE_TMP_TABLE)
     create_table->open_type= OT_TEMPORARY_ONLY;
-  else if (!lex->select_lex.item_list.elements)
+  else
     create_table->open_type= OT_BASE_ONLY;
 
   if (!lex->select_lex.item_list.elements)
@@ -7853,6 +7292,7 @@ bool parse_sql(THD *thd,
 {
   bool ret_value;
   DBUG_ASSERT(thd->m_parser_state == NULL);
+  DBUG_ASSERT(thd->lex->m_stmt == NULL);
 
   MYSQL_QUERY_PARSE_START(thd->query());
   /* Backup creation context. */
diff --git a/sql/sql_parse.h b/sql/sql_parse.h
index 8b7fe8f7b83..ad620544d29 100644
--- a/sql/sql_parse.h
+++ b/sql/sql_parse.h
@@ -93,8 +93,6 @@ void mysql_init_multi_delete(LEX *lex);
 bool multi_delete_set_locks_and_link_aux_tables(LEX *lex);
 void create_table_set_open_action_and_adjust_tables(LEX *lex);
 pthread_handler_t handle_bootstrap(void *arg);
-bool reload_acl_and_cache(THD *thd, ulong options, TABLE_LIST *tables,
-                          bool *write_to_binlog);
 int mysql_execute_command(THD *thd);
 bool do_command(THD *thd);
 void do_handle_bootstrap(THD *thd);
@@ -155,6 +153,7 @@ bool check_single_table_access(THD *thd, ulong privilege,
 bool check_routine_access(THD *thd,ulong want_access,char *db,char *name,
 			  bool is_proc, bool no_errors);
 bool check_some_access(THD *thd, ulong want_access, TABLE_LIST *table);
+bool check_merge_table_access(THD *thd, char *db, TABLE_LIST *table_list);
 bool check_some_routine_access(THD *thd, const char *db, const char *name, bool is_proc);
 bool check_access(THD *thd, ulong want_access, const char *db, ulong *save_priv,
                   GRANT_INTERNAL_INFO *grant_internal_info,
diff --git a/sql/sql_partition.cc b/sql/sql_partition.cc
index fb880cce8d3..b72816f8ce3 100644
--- a/sql/sql_partition.cc
+++ b/sql/sql_partition.cc
@@ -63,6 +63,7 @@
 #include "sql_table.h"                  // build_table_filename,
                                         // build_table_shadow_filename,
                                         // table_to_filename
+                                        // mysql_*_alter_copy_data
 #include "opt_range.h"                  // store_key_image_to_rec
 #include "sql_analyse.h"                // append_escaped
 
@@ -71,6 +72,8 @@
 
 #define ERROR_INJECT_CRASH(code) \
   DBUG_EVALUATE_IF(code, (abort(), 0), 0)
+#define ERROR_INJECT_ERROR(code) \
+  DBUG_EVALUATE_IF(code, (my_error(ER_UNKNOWN_ERROR, MYF(0)), TRUE), 0)
 
 /*
   Partition related functions declarations and some static constants;
@@ -4375,7 +4378,6 @@ static int fast_end_partition(THD *thd, ulonglong copied,
                               ALTER_PARTITION_PARAM_TYPE *lpt,
                               bool written_bin_log)
 {
-  int error;
   char tmp_name[80];
   DBUG_ENTER("fast_end_partition");
 
@@ -4384,13 +4386,6 @@ static int fast_end_partition(THD *thd, ulonglong copied,
   if (!is_empty)
     query_cache_invalidate3(thd, table_list, 0);
 
-  error= trans_commit_stmt(thd);
-  if (trans_commit_implicit(thd))
-    error= 1;
-
-  if (error)
-    DBUG_RETURN(TRUE);                      /* The error has been reported */
-
   if ((!is_empty) && (!written_bin_log) &&
       (!thd->lex->no_write_to_binlog) &&
     write_bin_log(thd, FALSE, thd->query(), thd->query_length()))
@@ -5533,17 +5528,25 @@ static bool mysql_change_partitions(ALTER_PARTITION_PARAM_TYPE *lpt)
   char path[FN_REFLEN+1];
   int error;
   handler *file= lpt->table->file;
+  THD *thd= lpt->thd;
   DBUG_ENTER("mysql_change_partitions");
 
   build_table_filename(path, sizeof(path) - 1, lpt->db, lpt->table_name, "", 0);
+
+  if(mysql_trans_prepare_alter_copy_data(thd))
+    DBUG_RETURN(TRUE);
+
   if ((error= file->ha_change_partitions(lpt->create_info, path, &lpt->copied,
                                          &lpt->deleted, lpt->pack_frm_data,
                                          lpt->pack_frm_len)))
   {
     file->print_error(error, MYF(error != ER_OUTOFMEMORY ? 0 : ME_FATALERROR));
-    DBUG_RETURN(TRUE);
   }
-  DBUG_RETURN(FALSE);
+
+  if (mysql_trans_commit_alter_copy_data(thd))
+    DBUG_RETURN(TRUE);                      /* The error has been reported */
+
+  DBUG_RETURN(test(error));
 }
 
 
@@ -6109,25 +6112,32 @@ static bool write_log_add_change_partition(ALTER_PARTITION_PARAM_TYPE *lpt)
 {
   partition_info *part_info= lpt->part_info;
   DDL_LOG_MEMORY_ENTRY *log_entry;
-  DDL_LOG_MEMORY_ENTRY *exec_log_entry= NULL;
+  DDL_LOG_MEMORY_ENTRY *exec_log_entry= part_info->exec_log_entry;
   char tmp_path[FN_REFLEN + 1];
   char path[FN_REFLEN + 1];
   uint next_entry= 0;
+  DDL_LOG_MEMORY_ENTRY *old_first_log_entry= part_info->first_log_entry;
+  /* write_log_drop_shadow_frm(lpt) must have been run first */
+  DBUG_ASSERT(old_first_log_entry);
   DBUG_ENTER("write_log_add_change_partition");
 
   build_table_filename(path, sizeof(path) - 1, lpt->db,
                        lpt->table_name, "", 0);
   build_table_shadow_filename(tmp_path, sizeof(tmp_path) - 1, lpt);
   mysql_mutex_lock(&LOCK_gdl);
+
+  /* Relink the previous drop shadow frm entry */
+  if (old_first_log_entry)
+    next_entry= old_first_log_entry->entry_pos;
   if (write_log_dropped_partitions(lpt, &next_entry, (const char*)path,
                                    FALSE))
     goto error;
-  if (write_log_replace_delete_frm(lpt, next_entry, NULL, tmp_path,
-                                  FALSE))
-    goto error;
   log_entry= part_info->first_log_entry;
+
   if (write_execute_ddl_log_entry(log_entry->entry_pos,
-                                    FALSE, &exec_log_entry))
+                                  FALSE,
+                                  /* Reuse the old execute ddl_log_entry */
+                                  &exec_log_entry))
     goto error;
   mysql_mutex_unlock(&LOCK_gdl);
   set_part_info_exec_log_entry(part_info, exec_log_entry);
@@ -6136,7 +6146,7 @@ static bool write_log_add_change_partition(ALTER_PARTITION_PARAM_TYPE *lpt)
 error:
   release_part_info_log_entries(part_info->first_log_entry);
   mysql_mutex_unlock(&LOCK_gdl);
-  part_info->first_log_entry= NULL;
+  part_info->first_log_entry= old_first_log_entry;
   my_error(ER_DDL_LOG_ERROR, MYF(0));
   DBUG_RETURN(TRUE);
 }
@@ -6153,9 +6163,15 @@ error:
     TRUE                     Error
     FALSE                    Success
   DESCRIPTION
-    We will write log entries that specify to remove all partitions reorganised,
-    to rename others to reflect the new naming scheme and to install the shadow
-    frm file.
+    We will write log entries that specify to
+    1) Install the shadow frm file.
+    2) Remove all partitions reorganized. (To be able to reorganize a partition
+       to the same name. Like in REORGANIZE p0 INTO (p0, p1),
+       so that the later rename from the new p0-temporary name to p0 don't
+       fail because the partition already exists.
+    3) Rename others to reflect the new naming scheme.
+
+    Note that it is written in the ddl log in reverse.
 */
 
 static bool write_log_final_change_partition(ALTER_PARTITION_PARAM_TYPE *lpt)
@@ -6169,20 +6185,25 @@ static bool write_log_final_change_partition(ALTER_PARTITION_PARAM_TYPE *lpt)
   uint next_entry= 0;
   DBUG_ENTER("write_log_final_change_partition");
 
+  /*
+    Do not link any previous log entry.
+    Replace the revert operations with forced retry operations.
+  */
   part_info->first_log_entry= NULL;
   build_table_filename(path, sizeof(path) - 1, lpt->db,
                        lpt->table_name, "", 0);
   build_table_shadow_filename(shadow_path, sizeof(shadow_path) - 1, lpt);
   mysql_mutex_lock(&LOCK_gdl);
+  if (write_log_changed_partitions(lpt, &next_entry, (const char*)path))
+    goto error;
   if (write_log_dropped_partitions(lpt, &next_entry, (const char*)path,
                       lpt->alter_info->flags & ALTER_REORGANIZE_PARTITION))
     goto error;
-  if (write_log_changed_partitions(lpt, &next_entry, (const char*)path))
-    goto error;
-  if (write_log_replace_delete_frm(lpt, 0UL, shadow_path, path, TRUE))
+  if (write_log_replace_delete_frm(lpt, next_entry, shadow_path, path, TRUE))
     goto error;
   log_entry= part_info->first_log_entry;
   part_info->frm_log_entry= log_entry;
+  /* Overwrite the revert execute log entry with this retry execute entry */
   if (write_execute_ddl_log_entry(log_entry->entry_pos,
                                     FALSE, &exec_log_entry))
     goto error;
@@ -6282,6 +6303,55 @@ static void alter_partition_lock_handling(ALTER_PARTITION_PARAM_TYPE *lpt)
 
 
 /*
+  Unlock and close table before renaming and dropping partitions
+  SYNOPSIS
+    alter_close_tables()
+    lpt                        Struct carrying parameters
+  RETURN VALUES
+    0
+*/
+
+static int alter_close_tables(ALTER_PARTITION_PARAM_TYPE *lpt)
+{
+  TABLE_SHARE *share= lpt->table->s;
+  THD *thd= lpt->thd;
+  TABLE *table;
+  DBUG_ENTER("alter_close_tables");
+  /*
+    We must keep LOCK_open while manipulating with thd->open_tables.
+    Another thread may be working on it.
+  */
+  mysql_mutex_lock(&LOCK_open);
+  /*
+    We can safely remove locks for all tables with the same name:
+    later they will all be closed anyway in
+    alter_partition_lock_handling().
+  */
+  for (table= thd->open_tables; table ; table= table->next)
+  {
+    if (!strcmp(table->s->table_name.str, share->table_name.str) &&
+	!strcmp(table->s->db.str, share->db.str))
+    {
+      mysql_lock_remove(thd, thd->lock, table);
+      table->file->close();
+      table->db_stat= 0;                        // Mark file closed
+      /*
+        Ensure that we won't end up with a crippled table instance
+        in the table cache if an error occurs before we reach
+        alter_partition_lock_handling() and the table is closed
+        by close_thread_tables() instead.
+      */
+      tdc_remove_table(thd, TDC_RT_REMOVE_UNUSED,
+                       table->s->db.str,
+                       table->s->table_name.str, TRUE);
+    }
+  }
+  mysql_mutex_unlock(&LOCK_open);
+  DBUG_RETURN(0);
+}
+
+
+/*
   Handle errors for ALTER TABLE for partitioning
   SYNOPSIS
     handle_alter_part_error()
@@ -6294,13 +6364,26 @@ static void alter_partition_lock_handling(ALTER_PARTITION_PARAM_TYPE *lpt)
 void handle_alter_part_error(ALTER_PARTITION_PARAM_TYPE *lpt,
                              bool not_completed,
                              bool drop_partition,
-                             bool frm_install)
+                             bool frm_install,
+                             bool close_table)
 {
   partition_info *part_info= lpt->part_info;
   DBUG_ENTER("handle_alter_part_error");
 
+  if (close_table)
+  {
+    /*
+      Since the error handling (ddl_log) needs to drop newly created
+      partitions they must be closed first to not issue errors.
+      But we still need some information from the part_info object,
+      so we clone it first to have a copy.
+    */
+    part_info= lpt->part_info->get_clone();
+    alter_close_tables(lpt);
+  }
+
   if (part_info->first_log_entry &&
-      execute_ddl_log_entry(current_thd,
+      execute_ddl_log_entry(lpt->thd,
                             part_info->first_log_entry->entry_pos))
   {
     /*
@@ -6401,6 +6484,22 @@ void handle_alter_part_error(ALTER_PARTITION_PARAM_TYPE *lpt,
 }
 
 
+/**
+  Downgrade an exclusive MDL lock if under LOCK TABLE.
+
+  If we don't downgrade the lock, it will not be downgraded or released
+  until the table is unlocked, resulting in blocking other threads using
+  the table.
+*/
+
+static void downgrade_mdl_if_lock_tables_mode(THD *thd, MDL_ticket *ticket,
+                                              enum_mdl_type type)
+{
+  if (thd->locked_tables_mode)
+    ticket->downgrade_exclusive_lock(type);
+}
+
+
 /*
   Actually perform the change requested by ALTER TABLE of partitions
   previously prepared.
@@ -6438,7 +6537,9 @@ uint fast_alter_partition_table(THD *thd, TABLE *table,
   ALTER_PARTITION_PARAM_TYPE *lpt= &lpt_obj;
   bool written_bin_log= TRUE;
   bool not_completed= TRUE;
+  bool close_table_on_failure= FALSE;
   bool frm_install= FALSE;
+  MDL_ticket *mdl_ticket= table->mdl_ticket;
   DBUG_ENTER("fast_alter_partition_table");
 
   lpt->thd= thd;
@@ -6537,20 +6638,18 @@ uint fast_alter_partition_table(THD *thd, TABLE *table,
 
       0) Write an entry that removes the shadow frm file if crash occurs 
       1) Write the new frm file as a shadow frm
-      2) Write the ddl log to ensure that the operation is completed
-         even in the presence of a MySQL Server crash
-      3) Lock the table in TL_WRITE_ONLY to ensure all other accesses to
-         the table have completed. This ensures that other threads can not
-         execute on the table in parallel.
-      4) Get an exclusive metadata lock on the table. This ensures that we
+      2) Get an exclusive metadata lock on the table (waits for all active
+         transactions using this table). This ensures that we
          can release all other locks on the table and since no one can open
          the table, there can be no new threads accessing the table. They
          will be hanging on this exclusive lock.
-      5) Close all tables that have already been opened but didn't stumble on
+      3) Write the ddl log to ensure that the operation is completed
+         even in the presence of a MySQL Server crash (the log is executed
+         before any other threads are started, so there are no locking issues).
+      4) Close all tables that have already been opened but didn't stumble on
          the abort locked previously. This is done as part of the
-         close_data_files_and_morph_locks call.
-      6) We are now ready to release all locks we got in this thread.
-      7) Write the bin log
+         alter_close_tables call.
+      5) Write the bin log
          Unfortunately the writing of the binlog is not synchronised with
          other logging activities. So no matter in which order the binlog
          is written compared to other activities there will always be cases
@@ -6561,40 +6660,54 @@ uint fast_alter_partition_table(THD *thd, TABLE *table,
          require writing the statement first in the ddl log and then
          when recovering from the crash read the binlog and insert it into
          the binlog if not written already.
-      8) Install the previously written shadow frm file
-      9) Prepare handlers for drop of partitions
-      10) Drop the partitions
-      11) Remove entries from ddl log
-      12) Reopen table if under lock tables
-      13) Complete query
+      6) Install the previously written shadow frm file
+      7) Prepare handlers for drop of partitions
+      8) Drop the partitions
+      9) Remove entries from ddl log
+      10) Reopen table if under lock tables
+      11) Complete query
 
       We insert Error injections at all places where it could be interesting
       to test if recovery is properly done.
     */
     if (write_log_drop_shadow_frm(lpt) ||
         ERROR_INJECT_CRASH("crash_drop_partition_1") ||
+        ERROR_INJECT_ERROR("fail_drop_partition_1") ||
         mysql_write_frm(lpt, WFRM_WRITE_SHADOW) ||
         ERROR_INJECT_CRASH("crash_drop_partition_2") ||
-        write_log_drop_partition(lpt) ||
+        ERROR_INJECT_ERROR("fail_drop_partition_2") ||
+        wait_while_table_is_used(thd, table, HA_EXTRA_FORCE_REOPEN) ||
         ERROR_INJECT_CRASH("crash_drop_partition_3") ||
-        (not_completed= FALSE) ||
-        abort_and_upgrade_lock_and_close_table(lpt) ||
+        ERROR_INJECT_ERROR("fail_drop_partition_3") ||
+        (close_table_on_failure= TRUE, FALSE) ||
+        write_log_drop_partition(lpt) ||
+        ERROR_INJECT_CRASH("crash_drop_partition_4") ||
+        ERROR_INJECT_ERROR("fail_drop_partition_4") ||
+        (close_table_on_failure= FALSE, FALSE) ||
+        (not_completed= FALSE, FALSE) ||
+        alter_close_tables(lpt) ||
         ERROR_INJECT_CRASH("crash_drop_partition_5") ||
+        ERROR_INJECT_ERROR("fail_drop_partition_5") ||
         ((!thd->lex->no_write_to_binlog) &&
          (write_bin_log(thd, FALSE,
                         thd->query(), thd->query_length()), FALSE)) ||
         ERROR_INJECT_CRASH("crash_drop_partition_6") ||
-        ((frm_install= TRUE), FALSE) ||
+        ERROR_INJECT_ERROR("fail_drop_partition_6") ||
+        (frm_install= TRUE, FALSE) ||
         mysql_write_frm(lpt, WFRM_INSTALL_SHADOW) ||
-        ((frm_install= FALSE), FALSE) ||
+        (frm_install= FALSE, FALSE) ||
         ERROR_INJECT_CRASH("crash_drop_partition_7") ||
+        ERROR_INJECT_ERROR("fail_drop_partition_7") ||
         mysql_drop_partitions(lpt) ||
         ERROR_INJECT_CRASH("crash_drop_partition_8") ||
+        ERROR_INJECT_ERROR("fail_drop_partition_8") ||
         (write_log_completed(lpt, FALSE), FALSE) ||
         ERROR_INJECT_CRASH("crash_drop_partition_9") ||
+        ERROR_INJECT_ERROR("fail_drop_partition_9") ||
         (alter_partition_lock_handling(lpt), FALSE)) 
     {
-      handle_alter_part_error(lpt, not_completed, TRUE, frm_install);
+      handle_alter_part_error(lpt, not_completed, TRUE, frm_install,
+                              close_table_on_failure);
       goto err;
     }
   }
@@ -6613,54 +6726,64 @@ uint fast_alter_partition_table(THD *thd, TABLE *table,
 
       0) Write an entry that removes the shadow frm file if crash occurs 
       1) Write the new frm file as a shadow frm file
-      2) Log the changes to happen in ddl log
-      2) Add the new partitions
-      3) Lock all partitions in TL_WRITE_ONLY to ensure that no users
-         are still using the old partitioning scheme. Wait until all
-         ongoing users have completed before progressing.
-      4) Get an exclusive metadata lock on the table. This ensures that we
+      2) Get an exclusive metadata lock on the table (waits for all active
+         transactions using this table). This ensures that we
          can release all other locks on the table and since no one can open
          the table, there can be no new threads accessing the table. They
          will be hanging on this exclusive lock.
-      5) Close all tables that have already been opened but didn't stumble on
-         the abort locked previously. This is done as part of the
-         close_data_files_and_morph_locks call.
-      6) Close all table handlers and unlock all handlers but retain
-         metadata lock.
-      7) Write binlog
-      8) Now the change is completed except for the installation of the
+      3) Write an entry to remove the new parttions if crash occurs
+      4) Add the new partitions.
+      5) Close all instances of the table and remove them from the table cache.
+      6) Write binlog
+      7) Now the change is completed except for the installation of the
          new frm file. We thus write an action in the log to change to
          the shadow frm file
-      9) Install the new frm file of the table where the partitions are
+      8) Install the new frm file of the table where the partitions are
          added to the table.
-      10)Wait until all accesses using the old frm file has completed
-      11)Remove entries from ddl log
-      12)Reopen tables if under lock tables
-      13)Complete query
+      9) Remove entries from ddl log
+      10)Reopen tables if under lock tables
+      11)Complete query
     */
-    if (write_log_add_change_partition(lpt) ||
+    if (write_log_drop_shadow_frm(lpt) ||
         ERROR_INJECT_CRASH("crash_add_partition_1") ||
+        ERROR_INJECT_ERROR("fail_add_partition_1") ||
         mysql_write_frm(lpt, WFRM_WRITE_SHADOW) ||
         ERROR_INJECT_CRASH("crash_add_partition_2") ||
-        mysql_change_partitions(lpt) ||
+        ERROR_INJECT_ERROR("fail_add_partition_2") ||
+        wait_while_table_is_used(thd, table, HA_EXTRA_FORCE_REOPEN) ||
         ERROR_INJECT_CRASH("crash_add_partition_3") ||
-        abort_and_upgrade_lock_and_close_table(lpt) ||
+        ERROR_INJECT_ERROR("fail_add_partition_3") ||
+        (close_table_on_failure= TRUE, FALSE) ||
+        write_log_add_change_partition(lpt) ||
+        ERROR_INJECT_CRASH("crash_add_partition_4") ||
+        ERROR_INJECT_ERROR("fail_add_partition_4") ||
+        mysql_change_partitions(lpt) ||
         ERROR_INJECT_CRASH("crash_add_partition_5") ||
+        ERROR_INJECT_ERROR("fail_add_partition_5") ||
+        (close_table_on_failure= FALSE, FALSE) ||
+        alter_close_tables(lpt) ||
+        ERROR_INJECT_CRASH("crash_add_partition_6") ||
+        ERROR_INJECT_ERROR("fail_add_partition_6") ||
         ((!thd->lex->no_write_to_binlog) &&
          (write_bin_log(thd, FALSE,
                         thd->query(), thd->query_length()), FALSE)) ||
-        ERROR_INJECT_CRASH("crash_add_partition_6") ||
-        write_log_rename_frm(lpt) ||
-        (not_completed= FALSE) ||
         ERROR_INJECT_CRASH("crash_add_partition_7") ||
-        ((frm_install= TRUE), FALSE) ||
-        mysql_write_frm(lpt, WFRM_INSTALL_SHADOW) ||
+        ERROR_INJECT_ERROR("fail_add_partition_7") ||
+        write_log_rename_frm(lpt) ||
+        (frm_install= TRUE, FALSE) ||
+        (not_completed= FALSE, FALSE) ||
         ERROR_INJECT_CRASH("crash_add_partition_8") ||
-        (write_log_completed(lpt, FALSE), FALSE) ||
+        ERROR_INJECT_ERROR("fail_add_partition_8") ||
+        mysql_write_frm(lpt, WFRM_INSTALL_SHADOW) ||
         ERROR_INJECT_CRASH("crash_add_partition_9") ||
+        ERROR_INJECT_ERROR("fail_add_partition_9") ||
+        (write_log_completed(lpt, FALSE), FALSE) ||
+        ERROR_INJECT_CRASH("crash_add_partition_10") ||
+        ERROR_INJECT_ERROR("fail_add_partition_10") ||
         (alter_partition_lock_handling(lpt), FALSE))
     {
-      handle_alter_part_error(lpt, not_completed, FALSE, frm_install);
+      handle_alter_part_error(lpt, not_completed, FALSE, frm_install,
+                              close_table_on_failure);
       goto err;
     }
   }
@@ -6703,13 +6826,14 @@ uint fast_alter_partition_table(THD *thd, TABLE *table,
          removed in a crash situation
       3) Add the new partitions
          Copy from the reorganised partitions to the new partitions
-      4) Log that operation is completed and log all complete actions
+      4) Get an exclusive metadata lock on the table (waits for all active
+         transactions using this table). This ensures that we
+         can release all other locks on the table and since no one can open
+         the table, there can be no new threads accessing the table. They
+         will be hanging on this exclusive lock.
+      5) Close all instances of the table and remove them from the table cache.
+      6) Log that operation is completed and log all complete actions
          needed to complete operation from here
-      5) Upgrade shared metadata lock on the table to an exclusive one.
-         After this we can be sure that there is no other connection
-         using this table (they will be waiting for metadata lock).
-      6) Close all table instances opened by this thread, but retain
-         exclusive metadata lock.
       7) Write bin log
       8) Prepare handlers for rename and delete of partitions
       9) Rename and drop the reorged partitions such that they are no
@@ -6718,36 +6842,56 @@ uint fast_alter_partition_table(THD *thd, TABLE *table,
       11) Reopen the table if under lock tables
       12) Complete query
     */
-    if (write_log_add_change_partition(lpt) ||
+    if (write_log_drop_shadow_frm(lpt) ||
         ERROR_INJECT_CRASH("crash_change_partition_1") ||
+        ERROR_INJECT_ERROR("fail_change_partition_1") ||
         mysql_write_frm(lpt, WFRM_WRITE_SHADOW) ||
         ERROR_INJECT_CRASH("crash_change_partition_2") ||
-        mysql_change_partitions(lpt) ||
+        ERROR_INJECT_ERROR("fail_change_partition_2") ||
+        (close_table_on_failure= TRUE, FALSE) ||
+        write_log_add_change_partition(lpt) ||
         ERROR_INJECT_CRASH("crash_change_partition_3") ||
-        write_log_final_change_partition(lpt) ||
+        ERROR_INJECT_ERROR("fail_change_partition_3") ||
+        mysql_change_partitions(lpt) ||
         ERROR_INJECT_CRASH("crash_change_partition_4") ||
-        (not_completed= FALSE) ||
-        abort_and_upgrade_lock_and_close_table(lpt) ||
+        ERROR_INJECT_ERROR("fail_change_partition_4") ||
+        wait_while_table_is_used(thd, table, HA_EXTRA_FORCE_REOPEN) ||
+        ERROR_INJECT_CRASH("crash_change_partition_5") ||
+        ERROR_INJECT_ERROR("fail_change_partition_5") ||
+        alter_close_tables(lpt) ||
+        (close_table_on_failure= FALSE) ||
         ERROR_INJECT_CRASH("crash_change_partition_6") ||
+        ERROR_INJECT_ERROR("fail_change_partition_6") ||
+        write_log_final_change_partition(lpt) ||
+        (not_completed= FALSE) ||
+        ERROR_INJECT_CRASH("crash_change_partition_7") ||
+        ERROR_INJECT_ERROR("fail_change_partition_7") ||
         ((!thd->lex->no_write_to_binlog) &&
          (write_bin_log(thd, FALSE,
                         thd->query(), thd->query_length()), FALSE)) ||
-        ERROR_INJECT_CRASH("crash_change_partition_7") ||
-        mysql_write_frm(lpt, WFRM_INSTALL_SHADOW) ||
         ERROR_INJECT_CRASH("crash_change_partition_8") ||
-        mysql_drop_partitions(lpt) ||
+        ERROR_INJECT_ERROR("fail_change_partition_8") ||
+        mysql_write_frm(lpt, WFRM_INSTALL_SHADOW) ||
         ERROR_INJECT_CRASH("crash_change_partition_9") ||
+        ERROR_INJECT_ERROR("fail_change_partition_9") ||
+        mysql_drop_partitions(lpt) ||
+        ERROR_INJECT_CRASH("crash_change_partition_10") ||
+        ERROR_INJECT_ERROR("fail_change_partition_10") ||
         mysql_rename_partitions(lpt) ||
         ((frm_install= TRUE), FALSE) ||
-        ERROR_INJECT_CRASH("crash_change_partition_10") ||
-        (write_log_completed(lpt, FALSE), FALSE) ||
         ERROR_INJECT_CRASH("crash_change_partition_11") ||
+        ERROR_INJECT_ERROR("fail_change_partition_11") ||
+        (write_log_completed(lpt, FALSE), FALSE) ||
+        ERROR_INJECT_CRASH("crash_change_partition_12") ||
+        ERROR_INJECT_ERROR("fail_change_partition_12") ||
         (alter_partition_lock_handling(lpt), FALSE))
     {
-      handle_alter_part_error(lpt, not_completed, FALSE, frm_install);
+      handle_alter_part_error(lpt, not_completed, FALSE, frm_install,
+                              close_table_on_failure);
       goto err;
     }
   }
+  downgrade_mdl_if_lock_tables_mode(thd, mdl_ticket, MDL_SHARED_NO_READ_WRITE);
   /*
     A final step is to write the query to the binlog and send ok to the
     user
@@ -6756,6 +6900,8 @@ uint fast_alter_partition_table(THD *thd, TABLE *table,
                                  table_list, FALSE, NULL,
                                  written_bin_log));
 err:
+  downgrade_mdl_if_lock_tables_mode(thd, mdl_ticket, MDL_SHARED_NO_READ_WRITE);
+  table->m_needs_reopen= TRUE;
   DBUG_RETURN(TRUE);
 }
 #endif
diff --git a/sql/sql_partition_admin.cc b/sql/sql_partition_admin.cc
new file mode 100644
index 00000000000..fee33303a04
--- /dev/null
+++ b/sql/sql_partition_admin.cc
@@ -0,0 +1,139 @@
+/* Copyright (c) 2010 Oracle and/or its affiliates. All rights reserved.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
+
+#include "sql_parse.h"                      // check_one_table_access
+#include "sql_table.h"                      // mysql_alter_table, etc.
+#include "sql_lex.h"                        // Sql_statement
+#include "sql_truncate.h"                   // mysql_truncate_table,
+                                            // Truncate_statement
+#include "sql_admin.h"                      // Analyze/Check/.._table_statement
+#include "sql_partition_admin.h"            // Alter_table_*_partition
+
+#ifndef WITH_PARTITION_STORAGE_ENGINE
+
+bool Partition_statement_unsupported::execute(THD *)
+{
+  DBUG_ENTER("Partition_statement_unsupported::execute");
+  /* error, partitioning support not compiled in... */
+  my_error(ER_FEATURE_DISABLED, MYF(0), "partitioning",
+           "--with-plugin-partition");
+  DBUG_RETURN(TRUE);
+}
+
+#else
+
+bool Alter_table_analyze_partition_statement::execute(THD *thd)
+{
+  bool res;
+  DBUG_ENTER("Alter_table_analyze_partition_statement::execute");
+
+  /*
+    Flag that it is an ALTER command which administrates partitions, used
+    by ha_partition
+  */
+  m_lex->alter_info.flags|= ALTER_ADMIN_PARTITION;
+
+  res= Analyze_table_statement::execute(thd);
+    
+  DBUG_RETURN(res);
+}
+
+
+bool Alter_table_check_partition_statement::execute(THD *thd)
+{
+  bool res;
+  DBUG_ENTER("Alter_table_check_partition_statement::execute");
+
+  /*
+    Flag that it is an ALTER command which administrates partitions, used
+    by ha_partition
+  */
+  m_lex->alter_info.flags|= ALTER_ADMIN_PARTITION;
+
+  res= Check_table_statement::execute(thd);
+
+  DBUG_RETURN(res);
+}
+
+
+bool Alter_table_optimize_partition_statement::execute(THD *thd)
+{
+  bool res;
+  DBUG_ENTER("Alter_table_optimize_partition_statement::execute");
+
+  /*
+    Flag that it is an ALTER command which administrates partitions, used
+    by ha_partition
+  */
+  m_lex->alter_info.flags|= ALTER_ADMIN_PARTITION;
+
+  res= Optimize_table_statement::execute(thd);
+
+  DBUG_RETURN(res);
+}
+
+
+bool Alter_table_repair_partition_statement::execute(THD *thd)
+{
+  bool res;
+  DBUG_ENTER("Alter_table_repair_partition_statement::execute");
+
+  /*
+    Flag that it is an ALTER command which administrates partitions, used
+    by ha_partition
+  */
+  m_lex->alter_info.flags|= ALTER_ADMIN_PARTITION;
+
+  res= Repair_table_statement::execute(thd);
+
+  DBUG_RETURN(res);
+}
+
+
+bool Alter_table_truncate_partition_statement::execute(THD *thd)
+{
+  TABLE_LIST *first_table= thd->lex->select_lex.table_list.first;
+  bool res;
+  enum_sql_command original_sql_command;
+  DBUG_ENTER("Alter_table_truncate_partition_statement::execute");
+
+  /*
+    Execute TRUNCATE PARTITION just like TRUNCATE TABLE.
+    Some storage engines (InnoDB, partition) checks thd_sql_command,
+    so we set it to SQLCOM_TRUNCATE during the execution.
+  */
+  original_sql_command= m_lex->sql_command;
+  m_lex->sql_command= SQLCOM_TRUNCATE;
+  
+  /*
+    Flag that it is an ALTER command which administrates partitions, used
+    by ha_partition.
+  */
+  m_lex->alter_info.flags|= ALTER_ADMIN_PARTITION;
+   
+  /*
+    Fix the lock types (not the same as ordinary ALTER TABLE).
+  */
+  first_table->lock_type= TL_WRITE;
+  first_table->mdl_request.set_type(MDL_SHARED_NO_READ_WRITE);
+
+  /* execute as a TRUNCATE TABLE */
+  res= Truncate_statement::execute(thd);
+
+  m_lex->sql_command= original_sql_command;
+  DBUG_RETURN(res);
+}
+
+#endif /* WITH_PARTITION_STORAGE_ENGINE */
diff --git a/sql/sql_partition_admin.h b/sql/sql_partition_admin.h
new file mode 100644
index 00000000000..36bafec4202
--- /dev/null
+++ b/sql/sql_partition_admin.h
@@ -0,0 +1,236 @@
+/* Copyright (c) 2010 Oracle and/or its affiliates. All rights reserved.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
+
+#ifndef SQL_PARTITION_ADMIN_H
+#define SQL_PARTITION_ADMIN_H
+
+#ifndef WITH_PARTITION_STORAGE_ENGINE
+
+/**
+  Stub class that returns a error if the partition storage engine is
+  not supported.
+*/
+class Partition_statement_unsupported : public Sql_statement
+{
+public:
+  Partition_statement_unsupported(LEX *lex)
+    : Sql_statement(lex)
+  {}
+
+  ~Partition_statement_unsupported()
+  {}
+
+  bool execute(THD *thd);
+};
+
+
+class Alter_table_analyze_partition_statement :
+  public Partition_statement_unsupported
+{
+public:
+  Alter_table_analyze_partition_statement(LEX *lex)
+    : Partition_statement_unsupported(lex)
+  {}
+
+  ~Alter_table_analyze_partition_statement()
+  {}
+};
+
+
+class Alter_table_check_partition_statement :
+  public Partition_statement_unsupported
+{
+public:
+  Alter_table_check_partition_statement(LEX *lex)
+    : Partition_statement_unsupported(lex)
+  {}
+
+  ~Alter_table_check_partition_statement()
+  {}
+};
+
+
+class Alter_table_optimize_partition_statement :
+  public Partition_statement_unsupported
+{
+public:
+  Alter_table_optimize_partition_statement(LEX *lex)
+    : Partition_statement_unsupported(lex)
+  {}
+
+  ~Alter_table_optimize_partition_statement()
+  {}
+};
+
+
+class Alter_table_repair_partition_statement :
+  public Partition_statement_unsupported
+{
+public:
+  Alter_table_repair_partition_statement(LEX *lex)
+    : Partition_statement_unsupported(lex)
+  {}
+
+  ~Alter_table_repair_partition_statement()
+  {}
+};
+
+
+class Alter_table_truncate_partition_statement :
+  public Partition_statement_unsupported
+{
+public:
+  Alter_table_truncate_partition_statement(LEX *lex)
+    : Partition_statement_unsupported(lex)
+  {}
+
+  ~Alter_table_truncate_partition_statement()
+  {}
+};
+
+
+#else
+
+/**
+  Class that represents the ALTER TABLE t1 ANALYZE PARTITION p statement.
+*/
+class Alter_table_analyze_partition_statement : public Analyze_table_statement
+{
+public:
+  /**
+    Constructor, used to represent a ALTER TABLE ANALYZE PARTITION statement.
+    @param lex the LEX structure for this statement.
+  */
+  Alter_table_analyze_partition_statement(LEX *lex)
+    : Analyze_table_statement(lex)
+  {}
+
+  ~Alter_table_analyze_partition_statement()
+  {}
+
+  /**
+    Execute a ALTER TABLE ANALYZE PARTITION statement at runtime.
+    @param thd the current thread.
+    @return false on success.
+  */
+  bool execute(THD *thd);
+};
+
+
+/**
+  Class that represents the ALTER TABLE t1 CHECK PARTITION p statement.
+*/
+class Alter_table_check_partition_statement : public Check_table_statement
+{
+public:
+  /**
+    Constructor, used to represent a ALTER TABLE CHECK PARTITION statement.
+    @param lex the LEX structure for this statement.
+  */
+  Alter_table_check_partition_statement(LEX *lex)
+    : Check_table_statement(lex)
+  {}
+
+  ~Alter_table_check_partition_statement()
+  {}
+
+  /**
+    Execute a ALTER TABLE CHECK PARTITION statement at runtime.
+    @param thd the current thread.
+    @return false on success.
+  */
+  bool execute(THD *thd);
+};
+
+
+/**
+  Class that represents the ALTER TABLE t1 OPTIMIZE PARTITION p statement.
+*/
+class Alter_table_optimize_partition_statement : public Optimize_table_statement
+{
+public:
+  /**
+    Constructor, used to represent a ALTER TABLE OPTIMIZE PARTITION statement.
+    @param lex the LEX structure for this statement.
+  */
+  Alter_table_optimize_partition_statement(LEX *lex)
+    : Optimize_table_statement(lex)
+  {}
+
+  ~Alter_table_optimize_partition_statement()
+  {}
+
+  /**
+    Execute a ALTER TABLE OPTIMIZE PARTITION statement at runtime.
+    @param thd the current thread.
+    @return false on success.
+  */
+  bool execute(THD *thd);
+};
+
+
+/**
+  Class that represents the ALTER TABLE t1 REPAIR PARTITION p statement.
+*/
+class Alter_table_repair_partition_statement : public Repair_table_statement
+{
+public:
+  /**
+    Constructor, used to represent a ALTER TABLE REPAIR PARTITION statement.
+    @param lex the LEX structure for this statement.
+  */
+  Alter_table_repair_partition_statement(LEX *lex)
+    : Repair_table_statement(lex)
+  {}
+
+  ~Alter_table_repair_partition_statement()
+  {}
+
+  /**
+    Execute a ALTER TABLE REPAIR PARTITION statement at runtime.
+    @param thd the current thread.
+    @return false on success.
+  */
+  bool execute(THD *thd);
+};
+
+
+/**
+  Class that represents the ALTER TABLE t1 TRUNCATE PARTITION p statement.
+*/
+class Alter_table_truncate_partition_statement : public Truncate_statement
+{
+public:
+  /**
+    Constructor, used to represent a ALTER TABLE TRUNCATE PARTITION statement.
+    @param lex the LEX structure for this statement.
+  */
+  Alter_table_truncate_partition_statement(LEX *lex)
+    : Truncate_statement(lex)
+  {}
+
+  ~Alter_table_truncate_partition_statement()
+  {}
+
+  /**
+    Execute a ALTER TABLE TRUNCATE PARTITION statement at runtime.
+    @param thd the current thread.
+    @return false on success.
+  */
+  bool execute(THD *thd);
+};
+
+#endif /* WITH_PARTITION_STORAGE_ENGINE */
+#endif /* SQL_PARTITION_ADMIN_H */
diff --git a/sql/sql_plugin.cc b/sql/sql_plugin.cc
index e3323260373..956be657af2 100644
--- a/sql/sql_plugin.cc
+++ b/sql/sql_plugin.cc
@@ -29,7 +29,7 @@
 #include "records.h"          // init_read_record, end_read_record
 #include <my_pthread.h>
 #include <my_getopt.h>
-#include <mysql/plugin_audit.h>
+#include "sql_audit.h"
 #include "lock.h"                               // MYSQL_LOCK_IGNORE_TIMEOUT
 #define REPORT_TO_LOG  1
 #define REPORT_TO_USER 2
@@ -1393,8 +1393,9 @@ static void plugin_load(MEM_ROOT *tmp_root, int *argc, char **argv)
   READ_RECORD read_record_info;
   int error;
   THD *new_thd= &thd;
+  bool result;
 #ifdef EMBEDDED_LIBRARY
-  bool table_exists;
+  No_such_table_error_handler error_handler;
 #endif /* EMBEDDED_LIBRARY */
   DBUG_ENTER("plugin_load");
 
@@ -1410,13 +1411,18 @@ static void plugin_load(MEM_ROOT *tmp_root, int *argc, char **argv)
     When building an embedded library, if the mysql.plugin table
     does not exist, we silently ignore the missing table
   */
-  if (check_if_table_exists(new_thd, &tables, &table_exists))
-    table_exists= FALSE;
-  if (!table_exists)
+  new_thd->push_internal_handler(&error_handler);
+#endif /* EMBEDDED_LIBRARY */
+
+  result= open_and_lock_tables(new_thd, &tables, FALSE, MYSQL_LOCK_IGNORE_TIMEOUT);
+
+#ifdef EMBEDDED_LIBRARY
+  new_thd->pop_internal_handler();
+  if (error_handler.safely_trapped_errors())
     goto end;
 #endif /* EMBEDDED_LIBRARY */
 
-  if (open_and_lock_tables(new_thd, &tables, FALSE, MYSQL_LOCK_IGNORE_TIMEOUT))
+  if (result)
   {
     DBUG_PRINT("error",("Can't open plugin table"));
     sql_print_error("Can't open the mysql.plugin table. Please "
@@ -1703,6 +1709,27 @@ bool mysql_install_plugin(THD *thd, const LEX_STRING *name, const LEX_STRING *dl
                              MYSQL_LOCK_IGNORE_TIMEOUT)))
     DBUG_RETURN(TRUE);
 
+  /*
+    Pre-acquire audit plugins for events that may potentially occur
+    during [UN]INSTALL PLUGIN.
+
+    When audit event is triggered, audit subsystem acquires interested
+    plugins by walking through plugin list. Evidently plugin list
+    iterator protects plugin list by acquiring LOCK_plugin, see
+    plugin_foreach_with_mask().
+
+    On the other hand [UN]INSTALL PLUGIN is acquiring LOCK_plugin
+    rather for a long time.
+
+    When audit event is triggered during [UN]INSTALL PLUGIN, plugin
+    list iterator acquires the same lock (within the same thread)
+    second time.
+
+    This hack should be removed when LOCK_plugin is fixed so it
+    protects only what it supposed to protect.
+  */
+  mysql_audit_acquire_plugins(thd, MYSQL_AUDIT_GENERAL_CLASS);
+
   mysql_mutex_lock(&LOCK_plugin);
   mysql_rwlock_wrlock(&LOCK_system_variables_hash);
 
@@ -1783,6 +1810,27 @@ bool mysql_uninstall_plugin(THD *thd, const LEX_STRING *name)
   if (! (table= open_ltable(thd, &tables, TL_WRITE, MYSQL_LOCK_IGNORE_TIMEOUT)))
     DBUG_RETURN(TRUE);
 
+  /*
+    Pre-acquire audit plugins for events that may potentially occur
+    during [UN]INSTALL PLUGIN.
+
+    When audit event is triggered, audit subsystem acquires interested
+    plugins by walking through plugin list. Evidently plugin list
+    iterator protects plugin list by acquiring LOCK_plugin, see
+    plugin_foreach_with_mask().
+
+    On the other hand [UN]INSTALL PLUGIN is acquiring LOCK_plugin
+    rather for a long time.
+
+    When audit event is triggered during [UN]INSTALL PLUGIN, plugin
+    list iterator acquires the same lock (within the same thread)
+    second time.
+
+    This hack should be removed when LOCK_plugin is fixed so it
+    protects only what it supposed to protect.
+  */
+  mysql_audit_acquire_plugins(thd, MYSQL_AUDIT_GENERAL_CLASS);
+
   mysql_mutex_lock(&LOCK_plugin);
   if (!(plugin= plugin_find_internal(name, MYSQL_ANY_PLUGIN)))
   {
diff --git a/sql/sql_prepare.cc b/sql/sql_prepare.cc
index 39cebfbe048..366c46d9c92 100644
--- a/sql/sql_prepare.cc
+++ b/sql/sql_prepare.cc
@@ -1717,14 +1717,6 @@ static bool mysql_test_create_table(Prepared_statement *stmt)
   if (create_table_precheck(thd, tables, create_table))
     DBUG_RETURN(TRUE);
 
-   /*
-     The open and lock strategies will be set again once the
-     statement is executed. These values are only meaningful
-     for the prepare phase.
-   */
-  create_table->open_strategy= TABLE_LIST::OPEN_IF_EXISTS;
-  create_table->lock_strategy= TABLE_LIST::OTLS_NONE;
-
   if (select_lex->item_list.elements)
   {
     /* Base table and temporary table are not in the same name space. */
diff --git a/sql/sql_reload.cc b/sql/sql_reload.cc
new file mode 100644
index 00000000000..bf38af78536
--- /dev/null
+++ b/sql/sql_reload.cc
@@ -0,0 +1,427 @@
+/* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
+
+#include "sql_reload.h"
+#include "sql_priv.h"
+#include "mysqld.h"      // select_errors
+#include "sql_class.h"   // THD
+#include "sql_acl.h"     // acl_reload
+#include "sql_servers.h" // servers_reload
+#include "sql_connect.h" // reset_mqh
+#include "sql_base.h"    // close_cached_tables
+#include "sql_db.h"      // my_dbopt_cleanup
+#include "hostname.h"    // hostname_cache_refresh
+#include "sql_repl.h"    // reset_master, reset_slave
+#include "debug_sync.h"
+
+
+/**
+  Reload/resets privileges and the different caches.
+
+  @param thd Thread handler (can be NULL!)
+  @param options What should be reset/reloaded (tables, privileges, slave...)
+  @param tables Tables to flush (if any)
+  @param write_to_binlog True if we can write to the binlog.
+               
+  @note Depending on 'options', it may be very bad to write the
+    query to the binlog (e.g. FLUSH SLAVE); this is a
+    pointer where reload_acl_and_cache() will put 0 if
+    it thinks we really should not write to the binlog.
+    Otherwise it will put 1.
+
+  @return Error status code
+    @retval 0 Ok
+    @retval !=0  Error; thd->killed is set or thd->is_error() is true
+*/
+
+bool reload_acl_and_cache(THD *thd, unsigned long options,
+                          TABLE_LIST *tables, bool *write_to_binlog)
+{
+  bool result=0;
+  select_errors=0;				/* Write if more errors */
+  bool tmp_write_to_binlog= 1;
+
+  DBUG_ASSERT(!thd || !thd->in_sub_stmt);
+
+#ifndef NO_EMBEDDED_ACCESS_CHECKS
+  if (options & REFRESH_GRANT)
+  {
+    THD *tmp_thd= 0;
+    /*
+      If reload_acl_and_cache() is called from SIGHUP handler we have to
+      allocate temporary THD for execution of acl_reload()/grant_reload().
+    */
+    if (!thd && (thd= (tmp_thd= new THD)))
+    {
+      thd->thread_stack= (char*) &tmp_thd;
+      thd->store_globals();
+    }
+
+    if (thd)
+    {
+      bool reload_acl_failed= acl_reload(thd);
+      bool reload_grants_failed= grant_reload(thd);
+      bool reload_servers_failed= servers_reload(thd);
+
+      if (reload_acl_failed || reload_grants_failed || reload_servers_failed)
+      {
+        result= 1;
+        /*
+          When an error is returned, my_message may have not been called and
+          the client will hang waiting for a response.
+        */
+        my_error(ER_UNKNOWN_ERROR, MYF(0), "FLUSH PRIVILEGES failed");
+      }
+    }
+
+    if (tmp_thd)
+    {
+      delete tmp_thd;
+      /* Remember that we don't have a THD */
+      my_pthread_setspecific_ptr(THR_THD,  0);
+      thd= 0;
+    }
+    reset_mqh((LEX_USER *)NULL, TRUE);
+  }
+#endif
+  if (options & REFRESH_LOG)
+  {
+    /*
+      Flush the normal query log, the update log, the binary log,
+      the slow query log, the relay log (if it exists) and the log
+      tables.
+    */
+
+    options|= REFRESH_BINARY_LOG;
+    options|= REFRESH_RELAY_LOG;
+    options|= REFRESH_SLOW_LOG;
+    options|= REFRESH_GENERAL_LOG;
+    options|= REFRESH_ENGINE_LOG;
+    options|= REFRESH_ERROR_LOG;
+  }
+
+  if (options & REFRESH_ERROR_LOG)
+    if (flush_error_log())
+      result= 1;
+
+  if ((options & REFRESH_SLOW_LOG) && opt_slow_log)
+    logger.flush_slow_log();
+
+  if ((options & REFRESH_GENERAL_LOG) && opt_log)
+    logger.flush_general_log();
+
+  if (options & REFRESH_ENGINE_LOG)
+    if (ha_flush_logs(NULL))
+      result= 1;
+
+  if (options & REFRESH_BINARY_LOG)
+  {
+    /*
+      Writing this command to the binlog may result in infinite loops
+      when doing mysqlbinlog|mysql, and anyway it does not really make
+      sense to log it automatically (would cause more trouble to users
+      than it would help them)
+    */
+    tmp_write_to_binlog= 0;
+    if (mysql_bin_log.is_open())
+      mysql_bin_log.rotate_and_purge(RP_FORCE_ROTATE);
+  }
+  if (options & REFRESH_RELAY_LOG)
+  {
+#ifdef HAVE_REPLICATION
+    mysql_mutex_lock(&LOCK_active_mi);
+    rotate_relay_log(active_mi);
+    mysql_mutex_unlock(&LOCK_active_mi);
+#endif
+  }
+#ifdef HAVE_QUERY_CACHE
+  if (options & REFRESH_QUERY_CACHE_FREE)
+  {
+    query_cache.pack();				// FLUSH QUERY CACHE
+    options &= ~REFRESH_QUERY_CACHE;    // Don't flush cache, just free memory
+  }
+  if (options & (REFRESH_TABLES | REFRESH_QUERY_CACHE))
+  {
+    query_cache.flush();			// RESET QUERY CACHE
+  }
+#endif /*HAVE_QUERY_CACHE*/
+
+  DBUG_ASSERT(!thd || thd->locked_tables_mode ||
+              !thd->mdl_context.has_locks() ||
+              thd->handler_tables_hash.records ||
+              thd->global_read_lock.is_acquired());
+
+  /*
+    Note that if REFRESH_READ_LOCK bit is set then REFRESH_TABLES is set too
+    (see sql_yacc.yy)
+  */
+  if (options & (REFRESH_TABLES | REFRESH_READ_LOCK)) 
+  {
+    if ((options & REFRESH_READ_LOCK) && thd)
+    {
+      /*
+        On the first hand we need write lock on the tables to be flushed,
+        on the other hand we must not try to aspire a global read lock
+        if we have a write locked table as this would lead to a deadlock
+        when trying to reopen (and re-lock) the table after the flush.
+      */
+      if (thd->locked_tables_mode)
+      {
+        my_error(ER_LOCK_OR_ACTIVE_TRANSACTION, MYF(0));
+        return 1;
+      }
+      /*
+	Writing to the binlog could cause deadlocks, as we don't log
+	UNLOCK TABLES
+      */
+      tmp_write_to_binlog= 0;
+      if (thd->global_read_lock.lock_global_read_lock(thd))
+	return 1;                               // Killed
+      if (close_cached_tables(thd, tables,
+                              ((options & REFRESH_FAST) ?  FALSE : TRUE),
+                              thd->variables.lock_wait_timeout))
+        result= 1;
+
+      if (thd->global_read_lock.make_global_read_lock_block_commit(thd)) // Killed
+      {
+        /* Don't leave things in a half-locked state */
+        thd->global_read_lock.unlock_global_read_lock(thd);
+        return 1;
+      }
+    }
+    else
+    {
+      if (thd && thd->locked_tables_mode)
+      {
+        /*
+          If we are under LOCK TABLES we should have a write
+          lock on tables which we are going to flush.
+        */
+        if (tables)
+        {
+          for (TABLE_LIST *t= tables; t; t= t->next_local)
+            if (!find_table_for_mdl_upgrade(thd->open_tables, t->db,
+                                            t->table_name, FALSE))
+              return 1;
+        }
+        else
+        {
+          for (TABLE *tab= thd->open_tables; tab; tab= tab->next)
+          {
+            if (! tab->mdl_ticket->is_upgradable_or_exclusive())
+            {
+              my_error(ER_TABLE_NOT_LOCKED_FOR_WRITE, MYF(0),
+                       tab->s->table_name.str);
+              return 1;
+            }
+          }
+        }
+      }
+
+      if (close_cached_tables(thd, tables,
+                              ((options & REFRESH_FAST) ?  FALSE : TRUE),
+                              (thd ? thd->variables.lock_wait_timeout :
+                               LONG_TIMEOUT)))
+        result= 1;
+    }
+    my_dbopt_cleanup();
+  }
+  if (options & REFRESH_HOSTS)
+    hostname_cache_refresh();
+  if (thd && (options & REFRESH_STATUS))
+    refresh_status(thd);
+  if (options & REFRESH_THREADS)
+    flush_thread_cache();
+#ifdef HAVE_REPLICATION
+  if (options & REFRESH_MASTER)
+  {
+    DBUG_ASSERT(thd);
+    tmp_write_to_binlog= 0;
+    if (reset_master(thd))
+    {
+      result=1;
+    }
+  }
+#endif
+#ifdef OPENSSL
+   if (options & REFRESH_DES_KEY_FILE)
+   {
+     if (des_key_file && load_des_key_file(des_key_file))
+         result= 1;
+   }
+#endif
+#ifdef HAVE_REPLICATION
+ if (options & REFRESH_SLAVE)
+ {
+   tmp_write_to_binlog= 0;
+   mysql_mutex_lock(&LOCK_active_mi);
+   if (reset_slave(thd, active_mi))
+     result=1;
+   mysql_mutex_unlock(&LOCK_active_mi);
+ }
+#endif
+ if (options & REFRESH_USER_RESOURCES)
+   reset_mqh((LEX_USER *) NULL, 0);             /* purecov: inspected */
+ *write_to_binlog= tmp_write_to_binlog;
+ /*
+   If the query was killed then this function must fail.
+ */
+ return result || (thd ? thd->killed : 0);
+}
+
+
+/**
+  Implementation of FLUSH TABLES <table_list> WITH READ LOCK.
+
+  In brief: take exclusive locks, expel tables from the table
+  cache, reopen the tables, enter the 'LOCKED TABLES' mode,
+  downgrade the locks.
+  Note: the function is written to be called from
+  mysql_execute_command(), it is not reusable in arbitrary
+  execution context.
+
+  Required privileges
+  -------------------
+  Since the statement implicitly enters LOCK TABLES mode,
+  it requires LOCK TABLES privilege on every table.
+  But since the rest of FLUSH commands require
+  the global RELOAD_ACL, it also requires RELOAD_ACL.
+
+  Compatibility with the global read lock
+  ---------------------------------------
+  We don't wait for the GRL, since neither the
+  5.1 combination that this new statement is intended to
+  replace (LOCK TABLE <list> WRITE; FLUSH TABLES;),
+  nor FLUSH TABLES WITH READ LOCK do.
+  @todo: this is not implemented, Dmitry disagrees.
+  Currently we wait for GRL in another connection,
+  but are compatible with a GRL in our own connection.
+
+  Behaviour under LOCK TABLES
+  ---------------------------
+  Bail out: i.e. don't perform an implicit UNLOCK TABLES.
+  This is not consistent with LOCK TABLES statement, but is
+  in line with behaviour of FLUSH TABLES WITH READ LOCK, and we
+  try to not introduce any new statements with implicit
+  semantics.
+
+  Compatibility with parallel updates
+  -----------------------------------
+  As a result, we will wait for all open transactions
+  against the tables to complete. After the lock downgrade,
+  new transactions will be able to read the tables, but not
+  write to them.
+
+  Differences from FLUSH TABLES <list>
+  -------------------------------------
+  - you can't flush WITH READ LOCK a non-existent table
+  - you can't flush WITH READ LOCK under LOCK TABLES
+  - currently incompatible with the GRL (@todo: fix)
+
+  Effect on views and temporary tables.
+  ------------------------------------
+  You can only apply this command to existing base tables.
+  If a view with such name exists, ER_WRONG_OBJECT is returned.
+  If a temporary table with such name exists, it's ignored:
+  if there is a base table, it's used, otherwise ER_NO_SUCH_TABLE
+  is returned.
+
+  Implicit commit
+  ---------------
+  This statement causes an implicit commit before and
+  after it.
+
+  HANDLER SQL
+  -----------
+  If this connection has HANDLERs open against
+  some of the tables being FLUSHed, these handlers
+  are implicitly flushed (lose their position).
+*/
+
+bool flush_tables_with_read_lock(THD *thd, TABLE_LIST *all_tables)
+{
+  Lock_tables_prelocking_strategy lock_tables_prelocking_strategy;
+  TABLE_LIST *table_list;
+  MDL_request_list mdl_requests;
+
+  /*
+    This is called from SQLCOM_FLUSH, the transaction has
+    been committed implicitly.
+  */
+
+  if (thd->locked_tables_mode)
+  {
+    my_error(ER_LOCK_OR_ACTIVE_TRANSACTION, MYF(0));
+    goto error;
+  }
+
+  /*
+    Acquire SNW locks on tables to be flushed. We can't use
+    lock_table_names() here as this call will also acquire global IX
+    and database-scope IX locks on the tables, and this will make
+    this statement incompatible with FLUSH TABLES WITH READ LOCK.
+  */
+  for (table_list= all_tables; table_list;
+       table_list= table_list->next_global)
+    mdl_requests.push_front(&table_list->mdl_request);
+
+  if (thd->mdl_context.acquire_locks(&mdl_requests,
+                                     thd->variables.lock_wait_timeout))
+    goto error;
+
+  DEBUG_SYNC(thd,"flush_tables_with_read_lock_after_acquire_locks");
+
+  for (table_list= all_tables; table_list;
+       table_list= table_list->next_global)
+  {
+    /* Request removal of table from cache. */
+    tdc_remove_table(thd, TDC_RT_REMOVE_UNUSED,
+                     table_list->db,
+                     table_list->table_name, FALSE);
+
+    /* Skip views and temporary tables. */
+    table_list->required_type= FRMTYPE_TABLE; /* Don't try to flush views. */
+    table_list->open_type= OT_BASE_ONLY;      /* Ignore temporary tables. */
+  }
+
+  /*
+    Before opening and locking tables the below call also waits
+    for old shares to go away, so the fact that we don't pass
+    MYSQL_LOCK_IGNORE_FLUSH flag to it is important.
+  */
+  if  (open_and_lock_tables(thd, all_tables, FALSE,
+                            MYSQL_OPEN_HAS_MDL_LOCK,
+                            &lock_tables_prelocking_strategy) ||
+       thd->locked_tables_list.init_locked_tables(thd))
+  {
+    goto error;
+  }
+  thd->variables.option_bits|= OPTION_TABLE_LOCK;
+
+  /*
+    We don't downgrade MDL_SHARED_NO_WRITE here as the intended
+    post effect of this call is identical to LOCK TABLES <...> READ,
+    and we didn't use thd->in_lock_talbes and
+    thd->sql_command= SQLCOM_LOCK_TABLES hacks to enter the LTM.
+  */
+
+  return FALSE;
+
+error:
+  return TRUE;
+}
+
+
+
diff --git a/sql/sql_reload.h b/sql/sql_reload.h
new file mode 100644
index 00000000000..0df5485c907
--- /dev/null
+++ b/sql/sql_reload.h
@@ -0,0 +1,26 @@
+#ifndef SQL_RELOAD_INCLUDED
+#define SQL_RELOAD_INCLUDED
+/* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
+
+class THD;
+struct TABLE_LIST;
+
+bool reload_acl_and_cache(THD *thd, unsigned long options,
+                          TABLE_LIST *tables, bool *write_to_binlog);
+
+bool flush_tables_with_read_lock(THD *thd, TABLE_LIST *all_tables);
+
+#endif
diff --git a/sql/sql_rename.cc b/sql/sql_rename.cc
index 301b22bd70e..97f8e46d052 100644
--- a/sql/sql_rename.cc
+++ b/sql/sql_rename.cc
@@ -147,13 +147,15 @@ bool mysql_rename_tables(THD *thd, TABLE_LIST *table_list, bool silent)
                        MYSQL_OPEN_SKIP_TEMPORARY))
     goto err;
 
-  mysql_mutex_lock(&LOCK_open);
-
   for (ren_table= table_list; ren_table; ren_table= ren_table->next_local)
     tdc_remove_table(thd, TDC_RT_REMOVE_ALL, ren_table->db,
-                     ren_table->table_name);
+                     ren_table->table_name, FALSE);
 
   error=0;
+  /*
+    An exclusive lock on table names is satisfactory to ensure
+    no other thread accesses this table.
+  */
   if ((ren_table=rename_tables(thd,table_list,0)))
   {
     /* Rename didn't succeed;  rename back the tables in reverse order */
@@ -175,17 +177,6 @@ bool mysql_rename_tables(THD *thd, TABLE_LIST *table_list, bool silent)
 
     error= 1;
   }
-  /*
-    An exclusive lock on table names is satisfactory to ensure
-    no other thread accesses this table.
-    However, NDB assumes that handler::rename_tables is called under
-    LOCK_open. And it indeed is, from ALTER TABLE.
-    TODO: remove this limitation.
-    We still should unlock LOCK_open as early as possible, to provide
-    higher concurrency - query_cache_invalidate can take minutes to
-    complete.
-  */
-  mysql_mutex_unlock(&LOCK_open);
 
   if (!silent && !error)
   {
@@ -197,8 +188,6 @@ bool mysql_rename_tables(THD *thd, TABLE_LIST *table_list, bool silent)
   if (!error)
     query_cache_invalidate3(thd, table_list, 0);
 
-  thd->mdl_context.release_transactional_locks();
-
 err:
   thd->global_read_lock.start_waiting_global_read_lock(thd);
   DBUG_RETURN(error || binlog_error);
diff --git a/sql/sql_select.cc b/sql/sql_select.cc
index 3c9eb215641..29a78cb31dc 100644
--- a/sql/sql_select.cc
+++ b/sql/sql_select.cc
@@ -12723,7 +12723,9 @@ end_write(JOIN *join, JOIN_TAB *join_tab __attribute__((unused)),
   if (!end_of_records)
   {
     copy_fields(&join->tmp_table_param);
-    copy_funcs(join->tmp_table_param.items_to_copy);
+    if (copy_funcs(join->tmp_table_param.items_to_copy, join->thd))
+      DBUG_RETURN(NESTED_LOOP_ERROR);           /* purecov: inspected */
+
     if (!join->having || join->having->val_int())
     {
       int error;
@@ -12813,7 +12815,8 @@ end_update(JOIN *join, JOIN_TAB *join_tab __attribute__((unused)),
       memcpy(table->record[0]+key_part->offset, group->buff, 1);
   }
   init_tmptable_sum_functions(join->sum_funcs);
-  copy_funcs(join->tmp_table_param.items_to_copy);
+  if (copy_funcs(join->tmp_table_param.items_to_copy, join->thd))
+    DBUG_RETURN(NESTED_LOOP_ERROR);           /* purecov: inspected */
   if ((error=table->file->ha_write_row(table->record[0])))
   {
     if (create_myisam_from_heap(join->thd, table, &join->tmp_table_param,
@@ -12848,7 +12851,8 @@ end_unique_update(JOIN *join, JOIN_TAB *join_tab __attribute__((unused)),
 
   init_tmptable_sum_functions(join->sum_funcs);
   copy_fields(&join->tmp_table_param);		// Groups are copied twice.
-  copy_funcs(join->tmp_table_param.items_to_copy);
+  if (copy_funcs(join->tmp_table_param.items_to_copy, join->thd))
+    DBUG_RETURN(NESTED_LOOP_ERROR);           /* purecov: inspected */
 
   if (!(error=table->file->ha_write_row(table->record[0])))
     join->send_records++;			// New group
@@ -12935,7 +12939,8 @@ end_write_group(JOIN *join, JOIN_TAB *join_tab __attribute__((unused)),
     if (idx < (int) join->send_group_parts)
     {
       copy_fields(&join->tmp_table_param);
-      copy_funcs(join->tmp_table_param.items_to_copy);
+      if (copy_funcs(join->tmp_table_param.items_to_copy, join->thd))
+	DBUG_RETURN(NESTED_LOOP_ERROR);
       if (init_sum_functions(join->sum_funcs, join->sum_funcs_end[idx+1]))
 	DBUG_RETURN(NESTED_LOOP_ERROR);
       if (join->procedure)
@@ -13238,6 +13243,34 @@ ok:
 }
 
 
+/**
+  Find shortest key suitable for full table scan.
+
+  @param table                 Table to scan
+  @param usable_keys           Allowed keys
+
+  @note
+     As far as 
+     1) clustered primary key entry data set is a set of all record
+        fields (key fields and not key fields) and
+     2) secondary index entry data is a union of its key fields and
+        primary key fields (at least InnoDB and its derivatives don't
+        duplicate primary key fields there, even if the primary and
+        the secondary keys have a common subset of key fields),
+     then secondary index entry data is always a subset of primary key entry.
+     Unfortunately, key_info[nr].key_length doesn't show the length
+     of key/pointer pair but a sum of key field lengths only, thus
+     we can't estimate index IO volume comparing only this key_length
+     value of secondary keys and clustered PK.
+     So, try secondary keys first, and choose PK only if there are no
+     usable secondary covering keys or found best secondary key include
+     all table fields (i.e. same as PK):
+
+  @return
+    MAX_KEY     no suitable key found
+    key index   otherwise
+*/
+
 uint find_shortest_key(TABLE *table, const key_map *usable_keys)
 {
   uint best= MAX_KEY;
@@ -13250,23 +13283,6 @@ uint find_shortest_key(TABLE *table, const key_map *usable_keys)
     uint min_length= (uint) ~0;
     for (uint nr=0; nr < table->s->keys ; nr++)
     {
-      /*
-       As far as 
-       1) clustered primary key entry data set is a set of all record
-          fields (key fields and not key fields) and
-       2) secondary index entry data is a union of its key fields and
-          primary key fields (at least InnoDB and its derivatives don't
-          duplicate primary key fields there, even if the primary and
-          the secondary keys have a common subset of key fields),
-       then secondary index entry data is always a subset of primary key
-       entry, and the PK is always longer.
-       Unfortunately, key_info[nr].key_length doesn't show the length
-       of key/pointer pair but a sum of key field lengths only, thus
-       we can't estimate index IO volume comparing only this key_length
-       value of seconday keys and clustered PK.
-       So, try secondary keys first, and choose PK only if there are no
-       usable secondary covering keys:
-      */
       if (nr == usable_clustered_pk)
         continue;
       if (usable_keys->is_set(nr))
@@ -13279,7 +13295,20 @@ uint find_shortest_key(TABLE *table, const key_map *usable_keys)
       }
     }
   }
-  return best != MAX_KEY ? best : usable_clustered_pk;
+  if (usable_clustered_pk != MAX_KEY)
+  {
+    /*
+     If the primary key is clustered and found shorter key covers all table
+     fields then primary key scan normally would be faster because amount of
+     data to scan is the same but PK is clustered.
+     It's safe to compare key parts with table fields since duplicate key
+     parts aren't allowed.
+     */
+    if (best == MAX_KEY ||
+        table->key_info[best].key_parts >= table->s->fields)
+      best= usable_clustered_pk;
+  }
+  return best;
 }
 
 /**
@@ -15807,14 +15836,39 @@ update_sum_func(Item_sum **func_ptr)
   return 0;
 }
 
-/** Copy result of functions to record in tmp_table. */
+/** 
+  Copy result of functions to record in tmp_table. 
 
-void
-copy_funcs(Item **func_ptr)
+  Uses the thread pointer to check for errors in 
+  some of the val_xxx() methods called by the 
+  save_in_result_field() function.
+  TODO: make the Item::val_xxx() return error code
+
+  @param func_ptr  array of the function Items to copy to the tmp table
+  @param thd       pointer to the current thread for error checking
+  @retval
+    FALSE if OK
+  @retval
+    TRUE on error  
+*/
+
+bool
+copy_funcs(Item **func_ptr, const THD *thd)
 {
   Item *func;
   for (; (func = *func_ptr) ; func_ptr++)
+  {
     func->save_in_result_field(1);
+    /*
+      Need to check the THD error state because Item::val_xxx() don't
+      return error code, but can generate errors
+      TODO: change it for a real status check when Item::val_xxx()
+      are extended to return status code.
+    */  
+    if (thd->is_error())
+      return TRUE;
+  }
+  return FALSE;
 }
 
 
diff --git a/sql/sql_select.h b/sql/sql_select.h
index 40f9e6d4054..77fff4ee24c 100644
--- a/sql/sql_select.h
+++ b/sql/sql_select.h
@@ -606,7 +606,7 @@ bool setup_copy_fields(THD *thd, TMP_TABLE_PARAM *param,
 		       List<Item> &new_list1, List<Item> &new_list2,
 		       uint elements, List<Item> &fields);
 void copy_fields(TMP_TABLE_PARAM *param);
-void copy_funcs(Item **func_ptr);
+bool copy_funcs(Item **func_ptr, const THD *thd);
 bool create_myisam_from_heap(THD *thd, TABLE *table, TMP_TABLE_PARAM *param,
 			     int error, bool ignore_last_dupp_error);
 uint find_shortest_key(TABLE *table, const key_map *usable_keys);
diff --git a/sql/sql_servers.cc b/sql/sql_servers.cc
index cfbf8e96719..bc845ed2cdd 100644
--- a/sql/sql_servers.cc
+++ b/sql/sql_servers.cc
@@ -628,7 +628,7 @@ int drop_server(THD *thd, LEX_SERVER_OPTIONS *server_options)
   /* close the servers table before we call closed_cached_connection_tables */
   close_mysql_tables(thd);
 
-  if (close_cached_connection_tables(thd, TRUE, &name))
+  if (close_cached_connection_tables(thd, &name))
   {
     push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
                         ER_UNKNOWN_ERROR, "Server connection in use");
@@ -1057,7 +1057,7 @@ int alter_server(THD *thd, LEX_SERVER_OPTIONS *server_options)
   /* close the servers table before we call closed_cached_connection_tables */
   close_mysql_tables(thd);
 
-  if (close_cached_connection_tables(thd, FALSE, &name))
+  if (close_cached_connection_tables(thd, &name))
   {
     push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
                         ER_UNKNOWN_ERROR, "Server connection in use");
diff --git a/sql/sql_show.cc b/sql/sql_show.cc
index 749bef8e930..6b24e3db7bc 100644
--- a/sql/sql_show.cc
+++ b/sql/sql_show.cc
@@ -3275,8 +3275,8 @@ static int fill_schema_table_from_frm(THD *thd, TABLE_LIST *tables,
 
   /*
     TODO: investigate if in this particular situation we can get by
-          simply obtaining internal lock of data-dictionary (ATM it
-          is LOCK_open) instead of obtaning full-blown metadata lock.
+          simply obtaining internal lock of the data-dictionary
+          instead of obtaining full-blown metadata lock.
   */
   if (try_acquire_high_prio_shared_mdl_lock(thd, &table_list, can_deadlock))
   {
@@ -7492,13 +7492,16 @@ int finalize_schema_table(st_plugin_int *plugin)
   ST_SCHEMA_TABLE *schema_table= (ST_SCHEMA_TABLE *)plugin->data;
   DBUG_ENTER("finalize_schema_table");
 
-  if (schema_table && plugin->plugin->deinit)
+  if (schema_table)
   {
-    DBUG_PRINT("info", ("Deinitializing plugin: '%s'", plugin->name.str));
-    if (plugin->plugin->deinit(NULL))
+    if (plugin->plugin->deinit)
     {
-      DBUG_PRINT("warning", ("Plugin '%s' deinit function returned error.",
-                             plugin->name.str));
+      DBUG_PRINT("info", ("Deinitializing plugin: '%s'", plugin->name.str));
+      if (plugin->plugin->deinit(NULL))
+      {
+        DBUG_PRINT("warning", ("Plugin '%s' deinit function returned error.",
+                               plugin->name.str));
+      }
     }
     my_free(schema_table);
   }
@@ -7659,7 +7662,7 @@ static bool show_create_trigger_impl(THD *thd,
 */
 
 static
-TABLE_LIST *get_trigger_table_impl(THD *thd, const sp_name *trg_name)
+TABLE_LIST *get_trigger_table(THD *thd, const sp_name *trg_name)
 {
   char trn_path_buff[FN_REFLEN];
   LEX_STRING trn_path= { trn_path_buff, 0 };
@@ -7696,39 +7699,6 @@ TABLE_LIST *get_trigger_table_impl(THD *thd, const sp_name *trg_name)
   return table;
 }
 
-/**
-  Read TRN and TRG files to obtain base table name for the specified
-  trigger name and construct TABE_LIST object for the base table. Acquire
-  LOCK_open when doing this.
-
-  @param thd      Thread context.
-  @param trg_name Trigger name.
-
-  @return TABLE_LIST object corresponding to the base table.
-*/
-
-static
-TABLE_LIST *get_trigger_table(THD *thd, const sp_name *trg_name)
-{
-  /* Acquire LOCK_open (stop the server). */
-
-  mysql_mutex_lock(&LOCK_open);
-
-  /*
-    Load base table name from the TRN-file and create TABLE_LIST object.
-  */
-
-  TABLE_LIST *lst= get_trigger_table_impl(thd, trg_name);
-
-  /* Release LOCK_open (continue the server). */
-
-  mysql_mutex_unlock(&LOCK_open);
-
-  /* That's it. */
-
-  return lst;
-}
-
 
 /**
   SHOW CREATE TRIGGER high-level implementation.
diff --git a/sql/sql_table.cc b/sql/sql_table.cc
index 02a874ce62f..3f0a0326c84 100644
--- a/sql/sql_table.cc
+++ b/sql/sql_table.cc
@@ -51,7 +51,6 @@
 #include "sql_parse.h"
 #include "sql_show.h"
 #include "transaction.h"
-#include "keycaches.h"
 #include "datadict.h"  // dd_frm_type()
 
 #ifdef __WIN__
@@ -78,10 +77,6 @@ mysql_prepare_create_table(THD *thd, HA_CREATE_INFO *create_info,
                            uint *db_options,
                            handler *file, KEY **key_info_buffer,
                            uint *key_count, int select_field_count);
-static bool
-mysql_prepare_alter_table(THD *thd, TABLE *table,
-                          HA_CREATE_INFO *create_info,
-                          Alter_info *alter_info);
 
 
 /**
@@ -1086,6 +1081,7 @@ static bool get_free_ddl_log_entry(DDL_LOG_MEMORY_ENTRY **active_entry,
   */
   used_entry->next_log_entry= first_used;
   used_entry->prev_log_entry= NULL;
+  used_entry->next_active_log_entry= NULL;
   global_ddl_log.first_used= used_entry;
   if (first_used)
     first_used->prev_log_entry= used_entry;
@@ -1723,7 +1719,6 @@ bool mysql_write_frm(ALTER_PARTITION_PARAM_TYPE *lpt, uint flags)
       completing this we write a new phase to the log entry that will
       deactivate it.
     */
-    mysql_mutex_lock(&LOCK_open);
     if (mysql_file_delete(key_file_frm, frm_name, MYF(MY_WME)) ||
 #ifdef WITH_PARTITION_STORAGE_ENGINE
         lpt->table->file->ha_create_handler_files(path, shadow_path,
@@ -1779,12 +1774,12 @@ bool mysql_write_frm(ALTER_PARTITION_PARAM_TYPE *lpt, uint flags)
 #endif
 
 err:
-    mysql_mutex_unlock(&LOCK_open);
 #ifdef WITH_PARTITION_STORAGE_ENGINE
     deactivate_ddl_log_entry(part_info->frm_log_entry->entry_pos);
     part_info->frm_log_entry= NULL;
     (void) sync_ddl_log();
 #endif
+    ;
   }
 
 end:
@@ -1799,6 +1794,8 @@ end:
     clear_error                   is clear_error to be called
     query                         Query to log
     query_length                  Length of query
+    is_trans                      if the event changes either
+                                  a trans or non-trans engine.
 
   RETURN VALUES
     NONE
@@ -1921,18 +1918,64 @@ int mysql_rm_table_part2(THD *thd, TABLE_LIST *tables, bool if_exists,
   String wrong_tables;
   int error= 0;
   int non_temp_tables_count= 0;
-  bool some_tables_deleted=0, tmp_table_deleted=0, foreign_key_error=0;
+  bool foreign_key_error=0;
+  bool non_tmp_error= 0;
+  bool trans_tmp_table_deleted= 0, non_trans_tmp_table_deleted= 0;
+  bool non_tmp_table_deleted= 0;
   String built_query;
-  String built_tmp_query;
+  String built_trans_tmp_query, built_non_trans_tmp_query;
   DBUG_ENTER("mysql_rm_table_part2");
 
-  if (thd->is_current_stmt_binlog_format_row() && !dont_log_query)
+  /*
+    Prepares the drop statements that will be written into the binary
+    log as follows:
+
+    1 - If we are not processing a "DROP TEMPORARY" it prepares a
+    "DROP".
+
+    2 - A "DROP" may result in a "DROP TEMPORARY" but the opposite is
+    not true.
+
+    3 - If the current format is row, the IF EXISTS token needs to be
+    appended because one does not know if CREATE TEMPORARY was previously
+    written to the binary log.
+
+    4 - Add the IF_EXISTS token if necessary, i.e. if_exists is TRUE.
+
+    5 - For temporary tables, there is a need to differentiate tables
+    in transactional and non-transactional storage engines. For that,
+    reason, two types of drop statements are prepared.
+
+    The need to different the type of tables when dropping a temporary
+    table stems from the fact that such drop does not commit an ongoing
+    transaction and changes to non-transactional tables must be written
+    ahead of the transaction in some circumstances.
+  */
+  if (!dont_log_query)
   {
-    built_query.set_charset(system_charset_info);
-    if (if_exists)
-      built_query.append("DROP TABLE IF EXISTS ");
+    if (!drop_temporary)
+    {
+      built_query.set_charset(system_charset_info);
+      if (if_exists)
+        built_query.append("DROP TABLE IF EXISTS ");
+      else
+        built_query.append("DROP TABLE ");
+    }
+
+    if (thd->is_current_stmt_binlog_format_row() || if_exists)
+    {
+      built_trans_tmp_query.set_charset(system_charset_info);
+      built_trans_tmp_query.append("DROP TEMPORARY TABLE IF EXISTS ");
+      built_non_trans_tmp_query.set_charset(system_charset_info);
+      built_non_trans_tmp_query.append("DROP TEMPORARY TABLE IF EXISTS ");
+    }
     else
-      built_query.append("DROP TABLE ");
+    {
+      built_trans_tmp_query.set_charset(system_charset_info);
+      built_trans_tmp_query.append("DROP TEMPORARY TABLE ");
+      built_non_trans_tmp_query.set_charset(system_charset_info);
+      built_non_trans_tmp_query.append("DROP TEMPORARY TABLE ");
+    }
   }
 
   mysql_ha_rm_tables(thd, tables);
@@ -1955,10 +1998,11 @@ int mysql_rm_table_part2(THD *thd, TABLE_LIST *tables, bool if_exists,
       if (lock_table_names(thd, tables, NULL, thd->variables.lock_wait_timeout,
                            MYSQL_OPEN_SKIP_TEMPORARY))
         DBUG_RETURN(1);
-      mysql_mutex_lock(&LOCK_open);
       for (table= tables; table; table= table->next_local)
-        tdc_remove_table(thd, TDC_RT_REMOVE_ALL, table->db, table->table_name);
-      mysql_mutex_unlock(&LOCK_open);
+      {
+        tdc_remove_table(thd, TDC_RT_REMOVE_ALL, table->db, table->table_name,
+                         FALSE);
+      }
     }
     else
     {
@@ -2001,6 +2045,7 @@ int mysql_rm_table_part2(THD *thd, TABLE_LIST *tables, bool if_exists,
 
   for (table= tables; table; table= table->next_local)
   {
+    bool is_trans;
     char *db=table->db;
     handlerton *table_type;
     enum legacy_db_type frm_db_type= DB_TYPE_UNKNOWN;
@@ -2009,78 +2054,70 @@ int mysql_rm_table_part2(THD *thd, TABLE_LIST *tables, bool if_exists,
                          table->db, table->table_name, (long) table->table,
                          table->table ? (long) table->table->s : (long) -1));
 
+    /*
+      drop_temporary_table may return one of the following error codes:
+      .  0 - a temporary table was successfully dropped.
+      .  1 - a temporary table was not found.
+      . -1 - a temporary table is used by an outer statement.
+    */
     if (table->open_type == OT_BASE_ONLY)
       error= 1;
-    else
-      error= drop_temporary_table(thd, table);
- 
-    switch (error) {
-    case  0:
-      // removed temporary table
-      tmp_table_deleted= 1;
+    else if ((error= drop_temporary_table(thd, table, &is_trans)) == -1)
+    {
+      DBUG_ASSERT(thd->in_sub_stmt);
+      goto err;
+    }
+
+    if ((drop_temporary && if_exists) || !error)
+    {
       /*
-        One needs to always log any temporary table drop if the current
-        statement logging format is set to row. This happens because one
-        might have created a temporary table while the statement logging
-        format was statement and then switched to mixed or row format.
+        This handles the case of temporary tables. We have the following cases:
+
+          . "DROP TEMPORARY" was executed and a temporary table was affected
+          (i.e. drop_temporary && !error) or the if_exists was specified (i.e.
+          drop_temporary && if_exists).
+
+          . "DROP" was executed but a temporary table was affected (.i.e
+          !error).
       */
-      if (thd->is_current_stmt_binlog_format_row())
+      if (!dont_log_query)
       {
-        if (built_tmp_query.is_empty()) 
-        {
-          built_tmp_query.set_charset(system_charset_info);
-          built_tmp_query.append("DROP TEMPORARY TABLE IF EXISTS ");
-        }
+        /*
+          If there is an error, we don't know the type of the engine
+          at this point. So, we keep it in the trx-cache.
+        */
+        is_trans= error ? TRUE : is_trans;
+        if (is_trans)
+          trans_tmp_table_deleted= TRUE;
+        else
+          non_trans_tmp_table_deleted= TRUE;
 
-        built_tmp_query.append("`");
+        String *built_ptr_query=
+          (is_trans ? &built_trans_tmp_query : &built_non_trans_tmp_query);
+        /*
+          Don't write the database name if it is the current one (or if
+          thd->db is NULL).
+        */
+        built_ptr_query->append("`");
         if (thd->db == NULL || strcmp(db,thd->db) != 0)
         {
-          built_tmp_query.append(db);
-          built_tmp_query.append("`.`");
+          built_ptr_query->append(db);
+          built_ptr_query->append("`.`");
         }
-        built_tmp_query.append(table->table_name);
-        built_tmp_query.append("`,");
+        built_ptr_query->append(table->table_name);
+        built_ptr_query->append("`,");
       }
-
-      continue;
-    case -1:
-      DBUG_ASSERT(thd->in_sub_stmt);
-      error= 1;
-      goto err;
-    default:
-      // temporary table not found
-      error= 0;
-    }
-
-    /* Probably a non-temporary table. */
-    if (!drop_temporary)
-      non_temp_tables_count++;
-
-    /*
-      If row-based replication is used and the table is not a
-      temporary table, we add the table name to the drop statement
-      being built.  The string always end in a comma and the comma
-      will be chopped off before being written to the binary log.
-      */
-    if (!drop_temporary && thd->is_current_stmt_binlog_format_row() && !dont_log_query)
-    {
       /*
-        Don't write the database name if it is the current one (or if
-        thd->db is NULL).
+        This means that a temporary table was droped and as such there
+        is no need to proceed with the code that tries to drop a regular
+        table.
       */
-      built_query.append("`");
-      if (thd->db == NULL || strcmp(db,thd->db) != 0)
-      {
-        built_query.append(db);
-        built_query.append("`.`");
-      }
-
-      built_query.append(table->table_name);
-      built_query.append("`,");
+      if (!error) continue;
     }
-
-    if (!drop_temporary)
+    else if (!drop_temporary)
     {
+      non_temp_tables_count++;
+
       if (thd->locked_tables_mode)
       {
         if (wait_while_table_is_used(thd, table->table, HA_EXTRA_FORCE_REOPEN))
@@ -2103,36 +2140,70 @@ int mysql_rm_table_part2(THD *thd, TABLE_LIST *tables, bool if_exists,
                                         reg_ext,
                                         table->internal_tmp_table ?
                                         FN_IS_TMP : 0);
+
+      /*
+        This handles the case where a "DROP" was executed and a regular
+        table "may be" dropped as drop_temporary is FALSE and error is
+        TRUE. If the error was FALSE a temporary table was dropped and
+        regardless of the status of drop_tempoary a "DROP TEMPORARY"
+        must be used.
+      */
+      if (!dont_log_query)
+      {
+        /*
+          Note that unless if_exists is TRUE or a temporary table was deleted, 
+          there is no means to know if the statement should be written to the
+          binary log. See further information on this variable in what follows.
+        */
+        non_tmp_table_deleted= (if_exists ? TRUE : non_tmp_table_deleted);
+        /*
+          Don't write the database name if it is the current one (or if
+          thd->db is NULL).
+        */
+        built_query.append("`");
+        if (thd->db == NULL || strcmp(db,thd->db) != 0)
+        {
+          built_query.append(db);
+          built_query.append("`.`");
+        }
+
+        built_query.append(table->table_name);
+        built_query.append("`,");
+      }
     }
-    /*
-      TODO: Investigate what should be done to remove this lock completely.
-            Is exclusive meta-data lock enough ?
-    */
     DEBUG_SYNC(thd, "rm_table_part2_before_delete_table");
     DBUG_EXECUTE_IF("sleep_before_part2_delete_table",
                     my_sleep(100000););
-    mysql_mutex_lock(&LOCK_open);
+    error= 0;
     if (drop_temporary ||
         ((access(path, F_OK) &&
           ha_create_table_from_engine(thd, db, alias)) ||
          (!drop_view &&
           dd_frm_type(thd, path, &frm_db_type) != FRMTYPE_TABLE)))
     {
-      // Table was not found on disk and table can't be created from engine
+      /*
+        One of the following cases happened:
+          . "DROP TEMPORARY" but a temporary table was not found.
+          . "DROP" but table was not found on disk and table can't be
+            created from engine.
+          . ./sql/datadict.cc +32 /Alfranio - TODO: We need to test this.
+      */
       if (if_exists)
 	push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_NOTE,
 			    ER_BAD_TABLE_ERROR, ER(ER_BAD_TABLE_ERROR),
 			    table->table_name);
       else
+      {
+        non_tmp_error = (drop_temporary ? non_tmp_error : TRUE);
         error= 1;
+      }
     }
     else
     {
       char *end;
       /*
         Cannot use the db_type from the table, since that might have changed
-        while waiting for the exclusive name lock. We are under LOCK_open,
-        so reading from the frm-file is safe.
+        while waiting for the exclusive name lock.
       */
       if (frm_db_type == DB_TYPE_UNKNOWN)
       {
@@ -2157,7 +2228,7 @@ int mysql_rm_table_part2(THD *thd, TABLE_LIST *tables, bool if_exists,
       if (error == HA_ERR_ROW_IS_REFERENCED)
       {
 	/* the table is referenced by a foreign key constraint */
-	foreign_key_error=1;
+	foreign_key_error= 1;
       }
       if (!error || error == ENOENT || error == HA_ERR_NO_SUCH_TABLE)
       {
@@ -2166,14 +2237,14 @@ int mysql_rm_table_part2(THD *thd, TABLE_LIST *tables, bool if_exists,
 	strmov(end,reg_ext);
         if (!(new_error= mysql_file_delete(key_file_frm, path, MYF(MY_WME))))
         {
-	  some_tables_deleted=1;
+          non_tmp_table_deleted= TRUE;
           new_error= Table_triggers_list::drop_all_triggers(thd, db,
                                                             table->table_name);
         }
         error|= new_error;
       }
+       non_tmp_error= error ? TRUE : non_tmp_error;
     }
-    mysql_mutex_unlock(&LOCK_open);
     if (error)
     {
       if (wrong_tables.length())
@@ -2187,11 +2258,12 @@ int mysql_rm_table_part2(THD *thd, TABLE_LIST *tables, bool if_exists,
                     my_printf_error(ER_BAD_TABLE_ERROR,
                                     ER(ER_BAD_TABLE_ERROR), MYF(0),
                                     table->table_name););
-
   }
   DEBUG_SYNC(thd, "rm_table_part2_before_binlog");
-  thd->thread_specific_used|= tmp_table_deleted;
+  thd->thread_specific_used|= (trans_tmp_table_deleted ||
+                               non_trans_tmp_table_deleted);
   error= 0;
+err:
   if (wrong_tables.length())
   {
     if (!foreign_key_error)
@@ -2202,85 +2274,48 @@ int mysql_rm_table_part2(THD *thd, TABLE_LIST *tables, bool if_exists,
     error= 1;
   }
 
-  if (some_tables_deleted || tmp_table_deleted || !error)
+  if (non_trans_tmp_table_deleted ||
+      trans_tmp_table_deleted || non_tmp_table_deleted)
   {
     query_cache_invalidate3(thd, tables, 0);
     if (!dont_log_query && mysql_bin_log.is_open())
     {
-      if (!thd->is_current_stmt_binlog_format_row() ||
-          (non_temp_tables_count > 0 && !tmp_table_deleted))
+      if (non_trans_tmp_table_deleted)
       {
-        /*
-          In this case, we are either using statement-based
-          replication or using row-based replication but have only
-          deleted one or more non-temporary tables (and no temporary
-          tables).  In this case, we can write the original query into
-          the binary log.
-        */
-        error |= write_bin_log(thd, !error, thd->query(), thd->query_length());
+          /* Chop of the last comma */
+          built_non_trans_tmp_query.chop();
+          built_non_trans_tmp_query.append(" /* generated by server */");
+          error |= thd->binlog_query(THD::STMT_QUERY_TYPE,
+                                     built_non_trans_tmp_query.ptr(),
+                                     built_non_trans_tmp_query.length(),
+                                     FALSE, FALSE, FALSE, 0);
       }
-      else if (thd->is_current_stmt_binlog_format_row() &&
-               tmp_table_deleted)
+      if (trans_tmp_table_deleted)
       {
-        if (non_temp_tables_count > 0)
-        {
-          /*
-            In this case we have deleted both temporary and
-            non-temporary tables, so:
-            - since we have deleted a non-temporary table we have to
-              binlog the statement, but
-            - since we have deleted a temporary table we cannot binlog
-              the statement (since the table may have not been created on the
-              slave - check "if" branch below, this might cause the slave to 
-              stop).
-
-            Instead, we write a built statement, only containing the
-            non-temporary tables, to the binary log
-          */
-          built_query.chop();                  // Chop of the last comma
+          /* Chop of the last comma */
+          built_trans_tmp_query.chop();
+          built_trans_tmp_query.append(" /* generated by server */");
+          error |= thd->binlog_query(THD::STMT_QUERY_TYPE,
+                                     built_trans_tmp_query.ptr(),
+                                     built_trans_tmp_query.length(),
+                                     TRUE, FALSE, FALSE, 0);
+      }
+      if (non_tmp_table_deleted)
+      {
+          /* Chop of the last comma */
+          built_query.chop();
           built_query.append(" /* generated by server */");
-          error|= write_bin_log(thd, !error, built_query.ptr(), built_query.length());
-        }
-
-        /*
-          One needs to always log any temporary table drop if the current
-          statement logging format is set to row. This happens because one
-          might have created a temporary table while the statement logging
-          format was statement and then switched to mixed or row format.
-        */
-        if (thd->is_current_stmt_binlog_format_row())
-        {
-          /*
-            In this case we have deleted some temporary tables but we are using
-            row based logging for the statement. However, thread uses mixed mode
-            format, thence we need to log the dropping as we cannot tell for
-            sure whether the create was logged as statement previously or not, ie,
-            before switching to row mode.
-          */
-          built_tmp_query.chop();                  // Chop of the last comma
-          built_tmp_query.append(" /* generated by server */");
-          /*
-            We cannot call the write_bin_log as we do not care about any errors
-            in the master as the statement is always DROP TEMPORARY TABLE IF EXISTS
-            and as such there will be no errors in the slave.
-          */
-          error|= thd->binlog_query(THD::STMT_QUERY_TYPE, built_tmp_query.ptr(),
-                                    built_tmp_query.length(), FALSE, FALSE, FALSE,
-                                    0);
-        }
+          int error_code = (non_tmp_error ?
+            (foreign_key_error ? ER_ROW_IS_REFERENCED : ER_BAD_TABLE_ERROR) : 0);
+          error |= thd->binlog_query(THD::STMT_QUERY_TYPE,
+                                     built_query.ptr(),
+                                     built_query.length(),
+                                     TRUE, FALSE, FALSE,
+                                     error_code);
       }
-
-      /*
-        The remaining cases are:
-        - no tables were deleted and
-        - only temporary tables were deleted and row-based
-          replication is used.
-        In both these cases, nothing should be written to the binary
-        log.
-      */
     }
   }
-err:
+
   if (!drop_temporary)
   {
     /*
@@ -3795,6 +3830,8 @@ void sp_prepare_create_field(THD *thd, Create_field *sql_field)
     internal_tmp_table  Set to 1 if this is an internal temporary table
 			(From ALTER TABLE)
     select_field_count
+    is_trans            identifies the type of engine where the table
+                        was created: either trans or non-trans.
 
   DESCRIPTION
     If one creates a temporary table, this is automatically opened
@@ -3819,7 +3856,8 @@ bool mysql_create_table_no_lock(THD *thd,
                                 HA_CREATE_INFO *create_info,
                                 Alter_info *alter_info,
                                 bool internal_tmp_table,
-                                uint select_field_count)
+                                uint select_field_count,
+                                bool *is_trans)
 {
   char		path[FN_REFLEN + 1];
   uint          path_length;
@@ -4042,7 +4080,6 @@ bool mysql_create_table_no_lock(THD *thd,
   {
     if (create_info->options & HA_LEX_CREATE_IF_NOT_EXISTS)
     {
-      create_info->table_existed= 1;		// Mark that table existed
       push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_NOTE,
                           ER_TABLE_EXISTS_ERROR, ER(ER_TABLE_EXISTS_ERROR),
                           alias);
@@ -4053,7 +4090,6 @@ bool mysql_create_table_no_lock(THD *thd,
     goto err;
   }
 
-  mysql_mutex_lock(&LOCK_open);
   if (!internal_tmp_table && !(create_info->options & HA_LEX_CREATE_TMP_TABLE))
   {
     if (!access(path,F_OK))
@@ -4061,7 +4097,7 @@ bool mysql_create_table_no_lock(THD *thd,
       if (create_info->options & HA_LEX_CREATE_IF_NOT_EXISTS)
         goto warn;
       my_error(ER_TABLE_EXISTS_ERROR,MYF(0),table_name);
-      goto unlock_and_end;
+      goto err;
     }
     /*
       We don't assert here, but check the result, because the table could be
@@ -4071,11 +4107,14 @@ bool mysql_create_table_no_lock(THD *thd,
       Then she could create the table. This case is pretty obscure and
       therefore we don't introduce a new error message only for it.
     */
+    mysql_mutex_lock(&LOCK_open);
     if (get_cached_table_share(db, table_name))
     {
+      mysql_mutex_unlock(&LOCK_open);
       my_error(ER_TABLE_EXISTS_ERROR, MYF(0), table_name);
-      goto unlock_and_end;
+      goto err;
     }
+    mysql_mutex_unlock(&LOCK_open);
   }
 
   /*
@@ -4083,7 +4122,7 @@ bool mysql_create_table_no_lock(THD *thd,
     exist in any storage engine. In such a case it should
     be discovered and the error ER_TABLE_EXISTS_ERROR be returned
     unless user specified CREATE TABLE IF EXISTS
-    The LOCK_open mutex has been locked to make sure no
+    An exclusive metadata lock ensures that no
     one else is attempting to discover the table. Since
     it's not on disk as a frm file, no one could be using it!
   */
@@ -4104,17 +4143,16 @@ bool mysql_create_table_no_lock(THD *thd,
         if (create_if_not_exists)
           goto warn;
         my_error(ER_TABLE_EXISTS_ERROR,MYF(0),table_name);
-        goto unlock_and_end;
+        goto err;
         break;
       default:
         DBUG_PRINT("info", ("error: %u from storage engine", retcode));
         my_error(retcode, MYF(0),table_name);
-        goto unlock_and_end;
+        goto err;
     }
   }
 
   thd_proc_info(thd, "creating table");
-  create_info->table_existed= 0;		// Mark that table is created
 
 #ifdef HAVE_READLINK
   {
@@ -4142,7 +4180,7 @@ bool mysql_create_table_no_lock(THD *thd,
       if (test_if_data_home_dir(dirpath))
       {
         my_error(ER_WRONG_ARGUMENTS, MYF(0), "DATA DIRECTORY");
-        goto unlock_and_end;
+        goto err;
       }
     }
     if (create_info->index_file_name)
@@ -4151,7 +4189,7 @@ bool mysql_create_table_no_lock(THD *thd,
       if (test_if_data_home_dir(dirpath))
       {
         my_error(ER_WRONG_ARGUMENTS, MYF(0), "INDEX DIRECTORY");
-        goto unlock_and_end;
+        goto err;
       }
     }
   }
@@ -4159,7 +4197,7 @@ bool mysql_create_table_no_lock(THD *thd,
 #ifdef WITH_PARTITION_STORAGE_ENGINE
   if (check_partition_dirs(thd->lex->part_info))
   {
-    goto unlock_and_end;
+    goto err;
   }
 #endif /* WITH_PARTITION_STORAGE_ENGINE */
 
@@ -4182,23 +4220,25 @@ bool mysql_create_table_no_lock(THD *thd,
   if (rea_create_table(thd, path, db, table_name,
                        create_info, alter_info->create_list,
                        key_count, key_info_buffer, file))
-    goto unlock_and_end;
+    goto err;
 
   if (create_info->options & HA_LEX_CREATE_TMP_TABLE)
   {
+    TABLE *table= NULL;
     /* Open table and put in temporary table list */
-    if (!(open_temporary_table(thd, path, db, table_name, 1)))
+    if (!(table= open_temporary_table(thd, path, db, table_name, 1)))
     {
       (void) rm_temporary_table(create_info->db_type, path);
-      goto unlock_and_end;
+      goto err;
     }
+
+    if (is_trans != NULL)
+      *is_trans= table->file->has_transactions();
+
     thd->thread_specific_used= TRUE;
   }
 
   error= FALSE;
-unlock_and_end:
-  mysql_mutex_unlock(&LOCK_open);
-
 err:
   thd_proc_info(thd, "After create");
   delete file;
@@ -4209,8 +4249,7 @@ warn:
   push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_NOTE,
                       ER_TABLE_EXISTS_ERROR, ER(ER_TABLE_EXISTS_ERROR),
                       alias);
-  create_info->table_existed= 1;		// Mark that table existed
-  goto unlock_and_end;
+  goto err;
 }
 
 
@@ -4229,6 +4268,7 @@ bool mysql_create_table(THD *thd, TABLE_LIST *create_table,
                         Alter_info *alter_info)
 {
   bool result;
+  bool is_trans= FALSE;
   DBUG_ENTER("mysql_create_table");
 
   /*
@@ -4245,7 +4285,7 @@ bool mysql_create_table(THD *thd, TABLE_LIST *create_table,
 
   result= mysql_create_table_no_lock(thd, create_table->db,
                                      create_table->table_name, create_info,
-                                     alter_info, FALSE, 0);
+                                     alter_info, FALSE, 0, &is_trans);
 
   /*
     Don't write statement if:
@@ -4257,7 +4297,7 @@ bool mysql_create_table(THD *thd, TABLE_LIST *create_table,
       (!thd->is_current_stmt_binlog_format_row() ||
        (thd->is_current_stmt_binlog_format_row() &&
         !(create_info->options & HA_LEX_CREATE_TMP_TABLE))))
-    result= write_bin_log(thd, TRUE, thd->query(), thd->query_length());
+    result= write_bin_log(thd, TRUE, thd->query(), thd->query_length(), is_trans);
 
 end:
   DBUG_RETURN(result);
@@ -4393,885 +4433,6 @@ mysql_rename_table(handlerton *base, const char *old_db,
 }
 
 
-static int send_check_errmsg(THD *thd, TABLE_LIST* table,
-			     const char* operator_name, const char* errmsg)
-
-{
-  Protocol *protocol= thd->protocol;
-  protocol->prepare_for_resend();
-  protocol->store(table->alias, system_charset_info);
-  protocol->store((char*) operator_name, system_charset_info);
-  protocol->store(STRING_WITH_LEN("error"), system_charset_info);
-  protocol->store(errmsg, system_charset_info);
-  thd->clear_error();
-  if (protocol->write())
-    return -1;
-  return 1;
-}
-
-
-static int prepare_for_repair(THD *thd, TABLE_LIST *table_list,
-			      HA_CHECK_OPT *check_opt)
-{
-  int error= 0;
-  TABLE tmp_table, *table;
-  TABLE_SHARE *share;
-  bool has_mdl_lock= FALSE;
-  char from[FN_REFLEN],tmp[FN_REFLEN+32];
-  const char **ext;
-  MY_STAT stat_info;
-  Open_table_context ot_ctx(thd, (MYSQL_OPEN_IGNORE_FLUSH |
-                                  MYSQL_OPEN_HAS_MDL_LOCK |
-                                  MYSQL_LOCK_IGNORE_TIMEOUT));
-  DBUG_ENTER("prepare_for_repair");
-
-  if (!(check_opt->sql_flags & TT_USEFRM))
-    DBUG_RETURN(0);
-
-  if (!(table= table_list->table))
-  {
-    char key[MAX_DBKEY_LENGTH];
-    uint key_length;
-    /*
-      If the table didn't exist, we have a shared metadata lock
-      on it that is left from mysql_admin_table()'s attempt to 
-      open it. Release the shared metadata lock before trying to
-      acquire the exclusive lock to satisfy MDL asserts and avoid
-      deadlocks.
-    */
-    thd->mdl_context.release_transactional_locks();
-    /*
-      Attempt to do full-blown table open in mysql_admin_table() has failed.
-      Let us try to open at least a .FRM for this table.
-    */
-    my_hash_value_type hash_value;
-
-    key_length= create_table_def_key(thd, key, table_list, 0);
-    table_list->mdl_request.init(MDL_key::TABLE,
-                                 table_list->db, table_list->table_name,
-                                 MDL_EXCLUSIVE);
-
-    if (lock_table_names(thd, table_list, table_list->next_global,
-                         thd->variables.lock_wait_timeout,
-                         MYSQL_OPEN_SKIP_TEMPORARY))
-      DBUG_RETURN(0);
-    has_mdl_lock= TRUE;
-
-    hash_value= my_calc_hash(&table_def_cache, (uchar*) key, key_length);
-    mysql_mutex_lock(&LOCK_open);
-    if (!(share= (get_table_share(thd, table_list, key, key_length, 0,
-                                  &error, hash_value))))
-    {
-      mysql_mutex_unlock(&LOCK_open);
-      DBUG_RETURN(0);				// Can't open frm file
-    }
-
-    if (open_table_from_share(thd, share, "", 0, 0, 0, &tmp_table, FALSE))
-    {
-      release_table_share(share);
-      mysql_mutex_unlock(&LOCK_open);
-      DBUG_RETURN(0);                           // Out of memory
-    }
-    mysql_mutex_unlock(&LOCK_open);
-    table= &tmp_table;
-  }
-
-  /* A MERGE table must not come here. */
-  DBUG_ASSERT(table->file->ht->db_type != DB_TYPE_MRG_MYISAM);
-
-  /*
-    REPAIR TABLE ... USE_FRM for temporary tables makes little sense.
-  */
-  if (table->s->tmp_table)
-  {
-    error= send_check_errmsg(thd, table_list, "repair",
-			     "Cannot repair temporary table from .frm file");
-    goto end;
-  }
-
-  /*
-    User gave us USE_FRM which means that the header in the index file is
-    trashed.
-    In this case we will try to fix the table the following way:
-    - Rename the data file to a temporary name
-    - Truncate the table
-    - Replace the new data file with the old one
-    - Run a normal repair using the new index file and the old data file
-  */
-
-  if (table->s->frm_version != FRM_VER_TRUE_VARCHAR)
-  {
-    error= send_check_errmsg(thd, table_list, "repair",
-                             "Failed repairing incompatible .frm file");
-    goto end;
-  }
-
-  /*
-    Check if this is a table type that stores index and data separately,
-    like ISAM or MyISAM. We assume fixed order of engine file name
-    extentions array. First element of engine file name extentions array
-    is meta/index file extention. Second element - data file extention. 
-  */
-  ext= table->file->bas_ext();
-  if (!ext[0] || !ext[1])
-    goto end;					// No data file
-
-  // Name of data file
-  strxmov(from, table->s->normalized_path.str, ext[1], NullS);
-  if (!mysql_file_stat(key_file_misc, from, &stat_info, MYF(0)))
-    goto end;				// Can't use USE_FRM flag
-
-  my_snprintf(tmp, sizeof(tmp), "%s-%lx_%lx",
-	      from, current_pid, thd->thread_id);
-
-  if (table_list->table)
-  {
-    /*
-      Table was successfully open in mysql_admin_table(). Now we need
-      to close it, but leave it protected by exclusive metadata lock.
-    */
-    if (wait_while_table_is_used(thd, table, HA_EXTRA_FORCE_REOPEN))
-      goto end;
-    close_all_tables_for_name(thd, table_list->table->s, FALSE);
-    table_list->table= 0;
-  }
-  /*
-    After this point we have an exclusive metadata lock on our table
-    in both cases when table was successfully open in mysql_admin_table()
-    and when it was open in prepare_for_repair().
-  */
-
-  if (my_rename(from, tmp, MYF(MY_WME)))
-  {
-    error= send_check_errmsg(thd, table_list, "repair",
-			     "Failed renaming data file");
-    goto end;
-  }
-  if (dd_recreate_table(thd, table_list->db, table_list->table_name))
-  {
-    error= send_check_errmsg(thd, table_list, "repair",
-			     "Failed generating table from .frm file");
-    goto end;
-  }
-  /*
-    'FALSE' for 'using_transactions' means don't postpone
-    invalidation till the end of a transaction, but do it
-    immediately.
-  */
-  query_cache_invalidate3(thd, table_list, FALSE);
-  if (mysql_file_rename(key_file_misc, tmp, from, MYF(MY_WME)))
-  {
-    error= send_check_errmsg(thd, table_list, "repair",
-			     "Failed restoring .MYD file");
-    goto end;
-  }
-
-  if (thd->locked_tables_list.reopen_tables(thd))
-    goto end;
-
-  /*
-    Now we should be able to open the partially repaired table
-    to finish the repair in the handler later on.
-  */
-  if (open_table(thd, table_list, thd->mem_root, &ot_ctx))
-  {
-    error= send_check_errmsg(thd, table_list, "repair",
-                             "Failed to open partially repaired table");
-    goto end;
-  }
-
-end:
-  thd->locked_tables_list.unlink_all_closed_tables(thd, NULL, 0);
-  if (table == &tmp_table)
-  {
-    mysql_mutex_lock(&LOCK_open);
-    closefrm(table, 1);				// Free allocated memory
-    mysql_mutex_unlock(&LOCK_open);
-  }
-  /* In case of a temporary table there will be no metadata lock. */
-  if (error && has_mdl_lock)
-    thd->mdl_context.release_transactional_locks();
-
-  DBUG_RETURN(error);
-}
-
-
-
-/*
-  RETURN VALUES
-    FALSE Message sent to net (admin operation went ok)
-    TRUE  Message should be sent by caller 
-          (admin operation or network communication failed)
-*/
-static bool mysql_admin_table(THD* thd, TABLE_LIST* tables,
-                              HA_CHECK_OPT* check_opt,
-                              const char *operator_name,
-                              thr_lock_type lock_type,
-                              bool open_for_modify,
-                              bool no_warnings_for_error,
-                              uint extra_open_options,
-                              int (*prepare_func)(THD *, TABLE_LIST *,
-                                                  HA_CHECK_OPT *),
-                              int (handler::*operator_func)(THD *,
-                                                            HA_CHECK_OPT *),
-                              int (view_operator_func)(THD *, TABLE_LIST*))
-{
-  TABLE_LIST *table;
-  SELECT_LEX *select= &thd->lex->select_lex;
-  List<Item> field_list;
-  Item *item;
-  Protocol *protocol= thd->protocol;
-  LEX *lex= thd->lex;
-  int result_code;
-  DBUG_ENTER("mysql_admin_table");
-
-  field_list.push_back(item = new Item_empty_string("Table", NAME_CHAR_LEN*2));
-  item->maybe_null = 1;
-  field_list.push_back(item = new Item_empty_string("Op", 10));
-  item->maybe_null = 1;
-  field_list.push_back(item = new Item_empty_string("Msg_type", 10));
-  item->maybe_null = 1;
-  field_list.push_back(item = new Item_empty_string("Msg_text", 255));
-  item->maybe_null = 1;
-  if (protocol->send_result_set_metadata(&field_list,
-                            Protocol::SEND_NUM_ROWS | Protocol::SEND_EOF))
-    DBUG_RETURN(TRUE);
-
-  mysql_ha_rm_tables(thd, tables);
-
-  for (table= tables; table; table= table->next_local)
-  {
-    char table_name[NAME_LEN*2+2];
-    char* db = table->db;
-    bool fatal_error=0;
-    bool open_error;
-
-    DBUG_PRINT("admin", ("table: '%s'.'%s'", table->db, table->table_name));
-    DBUG_PRINT("admin", ("extra_open_options: %u", extra_open_options));
-    strxmov(table_name, db, ".", table->table_name, NullS);
-    thd->open_options|= extra_open_options;
-    table->lock_type= lock_type;
-    /*
-      To make code safe for re-execution we need to reset type of MDL
-      request as code below may change it.
-      To allow concurrent execution of read-only operations we acquire
-      weak metadata lock for them.
-    */
-    table->mdl_request.set_type((lock_type >= TL_WRITE_ALLOW_WRITE) ?
-                                MDL_SHARED_NO_READ_WRITE : MDL_SHARED_READ);
-    /* open only one table from local list of command */
-    {
-      TABLE_LIST *save_next_global, *save_next_local;
-      save_next_global= table->next_global;
-      table->next_global= 0;
-      save_next_local= table->next_local;
-      table->next_local= 0;
-      select->table_list.first= table;
-      /*
-        Time zone tables and SP tables can be add to lex->query_tables list,
-        so it have to be prepared.
-        TODO: Investigate if we can put extra tables into argument instead of
-        using lex->query_tables
-      */
-      lex->query_tables= table;
-      lex->query_tables_last= &table->next_global;
-      lex->query_tables_own_last= 0;
-      thd->no_warnings_for_error= no_warnings_for_error;
-      if (view_operator_func == NULL)
-        table->required_type=FRMTYPE_TABLE;
-
-      open_error= open_and_lock_tables(thd, table, TRUE, 0);
-      thd->no_warnings_for_error= 0;
-      table->next_global= save_next_global;
-      table->next_local= save_next_local;
-      thd->open_options&= ~extra_open_options;
-      /*
-        Under locked tables, we know that the table can be opened,
-        so any errors opening the table are logical errors.
-        In these cases it does not make sense to try to repair.
-      */
-      if (open_error && thd->locked_tables_mode)
-      {
-        result_code= HA_ADMIN_FAILED;
-        goto send_result;
-      }
-#ifdef WITH_PARTITION_STORAGE_ENGINE
-      if (table->table)
-      {
-        /*
-          Set up which partitions that should be processed
-          if ALTER TABLE t ANALYZE/CHECK/OPTIMIZE/REPAIR PARTITION ..
-          CACHE INDEX/LOAD INDEX for specified partitions
-        */
-        Alter_info *alter_info= &lex->alter_info;
-
-        if (alter_info->flags & ALTER_ADMIN_PARTITION)
-        {
-          if (!table->table->part_info)
-          {
-            my_error(ER_PARTITION_MGMT_ON_NONPARTITIONED, MYF(0));
-            DBUG_RETURN(TRUE);
-          }
-          uint num_parts_found;
-          uint num_parts_opt= alter_info->partition_names.elements;
-          num_parts_found= set_part_state(alter_info, table->table->part_info,
-                                          PART_ADMIN);
-          if (num_parts_found != num_parts_opt &&
-              (!(alter_info->flags & ALTER_ALL_PARTITION)))
-          {
-            char buff[FN_REFLEN + MYSQL_ERRMSG_SIZE];
-            size_t length;
-            DBUG_PRINT("admin", ("sending non existent partition error"));
-            protocol->prepare_for_resend();
-            protocol->store(table_name, system_charset_info);
-            protocol->store(operator_name, system_charset_info);
-            protocol->store(STRING_WITH_LEN("error"), system_charset_info);
-            length= my_snprintf(buff, sizeof(buff),
-                                ER(ER_DROP_PARTITION_NON_EXISTENT),
-                                table_name);
-            protocol->store(buff, length, system_charset_info);
-            if(protocol->write())
-              goto err;
-            my_eof(thd);
-            goto err;
-          }
-        }
-      }
-#endif
-    }
-    DBUG_PRINT("admin", ("table: 0x%lx", (long) table->table));
-
-    if (prepare_func)
-    {
-      DBUG_PRINT("admin", ("calling prepare_func"));
-      switch ((*prepare_func)(thd, table, check_opt)) {
-      case  1:           // error, message written to net
-        trans_rollback_stmt(thd);
-        trans_rollback(thd);
-        close_thread_tables(thd);
-        thd->mdl_context.release_transactional_locks();
-        DBUG_PRINT("admin", ("simple error, admin next table"));
-        continue;
-      case -1:           // error, message could be written to net
-        /* purecov: begin inspected */
-        DBUG_PRINT("admin", ("severe error, stop"));
-        goto err;
-        /* purecov: end */
-      default:           // should be 0 otherwise
-        DBUG_PRINT("admin", ("prepare_func succeeded"));
-        ;
-      }
-    }
-
-    /*
-      CHECK TABLE command is only command where VIEW allowed here and this
-      command use only temporary teble method for VIEWs resolving => there
-      can't be VIEW tree substitition of join view => if opening table
-      succeed then table->table will have real TABLE pointer as value (in
-      case of join view substitution table->table can be 0, but here it is
-      impossible)
-    */
-    if (!table->table)
-    {
-      DBUG_PRINT("admin", ("open table failed"));
-      if (thd->warning_info->is_empty())
-        push_warning(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
-                     ER_CHECK_NO_SUCH_TABLE, ER(ER_CHECK_NO_SUCH_TABLE));
-      /* if it was a view will check md5 sum */
-      if (table->view &&
-          view_checksum(thd, table) == HA_ADMIN_WRONG_CHECKSUM)
-        push_warning(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
-                     ER_VIEW_CHECKSUM, ER(ER_VIEW_CHECKSUM));
-      if (thd->stmt_da->is_error() &&
-          (thd->stmt_da->sql_errno() == ER_NO_SUCH_TABLE ||
-           thd->stmt_da->sql_errno() == ER_FILE_NOT_FOUND))
-        /* A missing table is just issued as a failed command */
-        result_code= HA_ADMIN_FAILED;
-      else
-        /* Default failure code is corrupt table */
-        result_code= HA_ADMIN_CORRUPT;
-      goto send_result;
-    }
-
-    if (table->view)
-    {
-      DBUG_PRINT("admin", ("calling view_operator_func"));
-      result_code= (*view_operator_func)(thd, table);
-      goto send_result;
-    }
-
-    if (table->schema_table)
-    {
-      result_code= HA_ADMIN_NOT_IMPLEMENTED;
-      goto send_result;
-    }
-
-    if ((table->table->db_stat & HA_READ_ONLY) && open_for_modify)
-    {
-      /* purecov: begin inspected */
-      char buff[FN_REFLEN + MYSQL_ERRMSG_SIZE];
-      size_t length;
-      enum_sql_command save_sql_command= lex->sql_command;
-      DBUG_PRINT("admin", ("sending error message"));
-      protocol->prepare_for_resend();
-      protocol->store(table_name, system_charset_info);
-      protocol->store(operator_name, system_charset_info);
-      protocol->store(STRING_WITH_LEN("error"), system_charset_info);
-      length= my_snprintf(buff, sizeof(buff), ER(ER_OPEN_AS_READONLY),
-                          table_name);
-      protocol->store(buff, length, system_charset_info);
-      trans_commit_stmt(thd);
-      trans_commit(thd);
-      close_thread_tables(thd);
-      thd->mdl_context.release_transactional_locks();
-      lex->reset_query_tables_list(FALSE);
-      /*
-        Restore Query_tables_list::sql_command value to make statement
-        safe for re-execution.
-      */
-      lex->sql_command= save_sql_command;
-      table->table=0;				// For query cache
-      if (protocol->write())
-	goto err;
-      thd->stmt_da->reset_diagnostics_area();
-      continue;
-      /* purecov: end */
-    }
-
-    /*
-      Close all instances of the table to allow MyISAM "repair"
-      to rename files.
-      @todo: This code does not close all instances of the table.
-      It only closes instances in other connections, but if this
-      connection has LOCK TABLE t1 a READ, t1 b WRITE,
-      both t1 instances will be kept open.
-      There is no need to execute this branch for InnoDB, which does
-      repair by recreate. There is no need to do it for OPTIMIZE,
-      which doesn't move files around.
-      Hence, this code should be moved to prepare_for_repair(),
-      and executed only for MyISAM engine.
-    */
-    if (lock_type == TL_WRITE && !table->table->s->tmp_table)
-    {
-      if (wait_while_table_is_used(thd, table->table,
-                                   HA_EXTRA_PREPARE_FOR_RENAME))
-        goto err;
-      DEBUG_SYNC(thd, "after_admin_flush");
-      /* Flush entries in the query cache involving this table. */
-      query_cache_invalidate3(thd, table->table, 0);
-      /*
-        XXX: hack: switch off open_for_modify to skip the
-        flush that is made later in the execution flow. 
-      */
-      open_for_modify= 0;
-    }
-
-    if (table->table->s->crashed && operator_func == &handler::ha_check)
-    {
-      /* purecov: begin inspected */
-      DBUG_PRINT("admin", ("sending crashed warning"));
-      protocol->prepare_for_resend();
-      protocol->store(table_name, system_charset_info);
-      protocol->store(operator_name, system_charset_info);
-      protocol->store(STRING_WITH_LEN("warning"), system_charset_info);
-      protocol->store(STRING_WITH_LEN("Table is marked as crashed"),
-                      system_charset_info);
-      if (protocol->write())
-        goto err;
-      /* purecov: end */
-    }
-
-    if (operator_func == &handler::ha_repair &&
-        !(check_opt->sql_flags & TT_USEFRM))
-    {
-      if ((table->table->file->check_old_types() == HA_ADMIN_NEEDS_ALTER) ||
-          (table->table->file->ha_check_for_upgrade(check_opt) ==
-           HA_ADMIN_NEEDS_ALTER))
-      {
-        DBUG_PRINT("admin", ("recreating table"));
-        trans_rollback_stmt(thd);
-        trans_rollback(thd);
-        close_thread_tables(thd);
-        thd->mdl_context.release_transactional_locks();
-        tmp_disable_binlog(thd); // binlogging is done by caller if wanted
-        result_code= mysql_recreate_table(thd, table);
-        reenable_binlog(thd);
-        /*
-          mysql_recreate_table() can push OK or ERROR.
-          Clear 'OK' status. If there is an error, keep it:
-          we will store the error message in a result set row 
-          and then clear.
-        */
-        if (thd->stmt_da->is_ok())
-          thd->stmt_da->reset_diagnostics_area();
-        table->table= NULL;
-        result_code= result_code ? HA_ADMIN_FAILED : HA_ADMIN_OK;
-        goto send_result;
-      }
-    }
-
-    DBUG_PRINT("admin", ("calling operator_func '%s'", operator_name));
-    result_code = (table->table->file->*operator_func)(thd, check_opt);
-    DBUG_PRINT("admin", ("operator_func returned: %d", result_code));
-
-send_result:
-
-    lex->cleanup_after_one_table_open();
-    thd->clear_error();  // these errors shouldn't get client
-    {
-      List_iterator_fast<MYSQL_ERROR> it(thd->warning_info->warn_list());
-      MYSQL_ERROR *err;
-      while ((err= it++))
-      {
-        protocol->prepare_for_resend();
-        protocol->store(table_name, system_charset_info);
-        protocol->store((char*) operator_name, system_charset_info);
-        protocol->store(warning_level_names[err->get_level()].str,
-                        warning_level_names[err->get_level()].length,
-                        system_charset_info);
-        protocol->store(err->get_message_text(), system_charset_info);
-        if (protocol->write())
-          goto err;
-      }
-      thd->warning_info->clear_warning_info(thd->query_id);
-    }
-    protocol->prepare_for_resend();
-    protocol->store(table_name, system_charset_info);
-    protocol->store(operator_name, system_charset_info);
-
-send_result_message:
-
-    DBUG_PRINT("info", ("result_code: %d", result_code));
-    switch (result_code) {
-    case HA_ADMIN_NOT_IMPLEMENTED:
-      {
-       char buf[MYSQL_ERRMSG_SIZE];
-       size_t length=my_snprintf(buf, sizeof(buf),
-				ER(ER_CHECK_NOT_IMPLEMENTED), operator_name);
-	protocol->store(STRING_WITH_LEN("note"), system_charset_info);
-	protocol->store(buf, length, system_charset_info);
-      }
-      break;
-
-    case HA_ADMIN_NOT_BASE_TABLE:
-      {
-        char buf[MYSQL_ERRMSG_SIZE];
-        size_t length= my_snprintf(buf, sizeof(buf),
-                                 ER(ER_BAD_TABLE_ERROR), table_name);
-        protocol->store(STRING_WITH_LEN("note"), system_charset_info);
-        protocol->store(buf, length, system_charset_info);
-      }
-      break;
-
-    case HA_ADMIN_OK:
-      protocol->store(STRING_WITH_LEN("status"), system_charset_info);
-      protocol->store(STRING_WITH_LEN("OK"), system_charset_info);
-      break;
-
-    case HA_ADMIN_FAILED:
-      protocol->store(STRING_WITH_LEN("status"), system_charset_info);
-      protocol->store(STRING_WITH_LEN("Operation failed"),
-                      system_charset_info);
-      break;
-
-    case HA_ADMIN_REJECT:
-      protocol->store(STRING_WITH_LEN("status"), system_charset_info);
-      protocol->store(STRING_WITH_LEN("Operation need committed state"),
-                      system_charset_info);
-      open_for_modify= FALSE;
-      break;
-
-    case HA_ADMIN_ALREADY_DONE:
-      protocol->store(STRING_WITH_LEN("status"), system_charset_info);
-      protocol->store(STRING_WITH_LEN("Table is already up to date"),
-                      system_charset_info);
-      break;
-
-    case HA_ADMIN_CORRUPT:
-      protocol->store(STRING_WITH_LEN("error"), system_charset_info);
-      protocol->store(STRING_WITH_LEN("Corrupt"), system_charset_info);
-      fatal_error=1;
-      break;
-
-    case HA_ADMIN_INVALID:
-      protocol->store(STRING_WITH_LEN("error"), system_charset_info);
-      protocol->store(STRING_WITH_LEN("Invalid argument"),
-                      system_charset_info);
-      break;
-
-    case HA_ADMIN_TRY_ALTER:
-    {
-      /*
-        This is currently used only by InnoDB. ha_innobase::optimize() answers
-        "try with alter", so here we close the table, do an ALTER TABLE,
-        reopen the table and do ha_innobase::analyze() on it.
-        We have to end the row, so analyze could return more rows.
-      */
-      trans_commit_stmt(thd);
-      trans_commit(thd);
-      close_thread_tables(thd);
-      thd->mdl_context.release_transactional_locks();
-      DEBUG_SYNC(thd, "ha_admin_try_alter");
-      protocol->store(STRING_WITH_LEN("note"), system_charset_info);
-      protocol->store(STRING_WITH_LEN(
-          "Table does not support optimize, doing recreate + analyze instead"),
-                      system_charset_info);
-      if (protocol->write())
-        goto err;
-      DBUG_PRINT("info", ("HA_ADMIN_TRY_ALTER, trying analyze..."));
-      TABLE_LIST *save_next_local= table->next_local,
-                 *save_next_global= table->next_global;
-      table->next_local= table->next_global= 0;
-      tmp_disable_binlog(thd); // binlogging is done by caller if wanted
-      result_code= mysql_recreate_table(thd, table);
-      reenable_binlog(thd);
-      /*
-        mysql_recreate_table() can push OK or ERROR.
-        Clear 'OK' status. If there is an error, keep it:
-        we will store the error message in a result set row 
-        and then clear.
-      */
-      if (thd->stmt_da->is_ok())
-        thd->stmt_da->reset_diagnostics_area();
-      trans_commit_stmt(thd);
-      trans_commit(thd);
-      close_thread_tables(thd);
-      thd->mdl_context.release_transactional_locks();
-      table->table= NULL;
-      if (!result_code) // recreation went ok
-      {
-        /* Clear the ticket released above. */
-        table->mdl_request.ticket= NULL;
-        DEBUG_SYNC(thd, "ha_admin_open_ltable");
-        table->mdl_request.set_type(MDL_SHARED_WRITE);
-        if ((table->table= open_ltable(thd, table, lock_type, 0)))
-        {
-          result_code= table->table->file->ha_analyze(thd, check_opt);
-          if (result_code == HA_ADMIN_ALREADY_DONE)
-            result_code= HA_ADMIN_OK;
-          else if (result_code)  // analyze failed
-            table->table->file->print_error(result_code, MYF(0));
-        }
-        else
-          result_code= -1; // open failed
-      }
-      /* Start a new row for the final status row */
-      protocol->prepare_for_resend();
-      protocol->store(table_name, system_charset_info);
-      protocol->store(operator_name, system_charset_info);
-      if (result_code) // either mysql_recreate_table or analyze failed
-      {
-        DBUG_ASSERT(thd->is_error());
-        if (thd->is_error())
-        {
-          const char *err_msg= thd->stmt_da->message();
-          if (!thd->vio_ok())
-          {
-            sql_print_error("%s", err_msg);
-          }
-          else
-          {
-            /* Hijack the row already in-progress. */
-            protocol->store(STRING_WITH_LEN("error"), system_charset_info);
-            protocol->store(err_msg, system_charset_info);
-            if (protocol->write())
-              goto err;
-            /* Start off another row for HA_ADMIN_FAILED */
-            protocol->prepare_for_resend();
-            protocol->store(table_name, system_charset_info);
-            protocol->store(operator_name, system_charset_info);
-          }
-          thd->clear_error();
-        }
-      }
-      result_code= result_code ? HA_ADMIN_FAILED : HA_ADMIN_OK;
-      table->next_local= save_next_local;
-      table->next_global= save_next_global;
-      goto send_result_message;
-    }
-    case HA_ADMIN_WRONG_CHECKSUM:
-    {
-      protocol->store(STRING_WITH_LEN("note"), system_charset_info);
-      protocol->store(ER(ER_VIEW_CHECKSUM), strlen(ER(ER_VIEW_CHECKSUM)),
-                      system_charset_info);
-      break;
-    }
-
-    case HA_ADMIN_NEEDS_UPGRADE:
-    case HA_ADMIN_NEEDS_ALTER:
-    {
-      char buf[MYSQL_ERRMSG_SIZE];
-      size_t length;
-
-      protocol->store(STRING_WITH_LEN("error"), system_charset_info);
-      length=my_snprintf(buf, sizeof(buf), ER(ER_TABLE_NEEDS_UPGRADE),
-                         table->table_name);
-      protocol->store(buf, length, system_charset_info);
-      fatal_error=1;
-      break;
-    }
-
-    default:				// Probably HA_ADMIN_INTERNAL_ERROR
-      {
-        char buf[MYSQL_ERRMSG_SIZE];
-        size_t length=my_snprintf(buf, sizeof(buf),
-                                "Unknown - internal error %d during operation",
-                                result_code);
-        protocol->store(STRING_WITH_LEN("error"), system_charset_info);
-        protocol->store(buf, length, system_charset_info);
-        fatal_error=1;
-        break;
-      }
-    }
-    if (table->table)
-    {
-      if (table->table->s->tmp_table)
-      {
-        /*
-          If the table was not opened successfully, do not try to get
-          status information. (Bug#47633)
-        */
-        if (open_for_modify && !open_error)
-          table->table->file->info(HA_STATUS_CONST);
-      }
-      else if (open_for_modify || fatal_error)
-      {
-        mysql_mutex_lock(&LOCK_open);
-        tdc_remove_table(thd, TDC_RT_REMOVE_UNUSED,
-                         table->db, table->table_name);
-        mysql_mutex_unlock(&LOCK_open);
-        /*
-          May be something modified. Consequently, we have to
-          invalidate the query cache.
-        */
-        table->table= 0;			// For query cache
-        query_cache_invalidate3(thd, table, 0);
-      }
-    }
-    /* Error path, a admin command failed. */
-    trans_commit_stmt(thd);
-    trans_commit_implicit(thd);
-    close_thread_tables(thd);
-    thd->mdl_context.release_transactional_locks();
-
-    /*
-      If it is CHECK TABLE v1, v2, v3, and v1, v2, v3 are views, we will run
-      separate open_tables() for each CHECK TABLE argument.
-      Right now we do not have a separate method to reset the prelocking
-      state in the lex to the state after parsing, so each open will pollute
-      this state: add elements to lex->srotuines_list, TABLE_LISTs to
-      lex->query_tables. Below is a lame attempt to recover from this
-      pollution.
-      @todo: have a method to reset a prelocking context, or use separate
-      contexts for each open.
-    */
-    for (Sroutine_hash_entry *rt=
-           (Sroutine_hash_entry*)thd->lex->sroutines_list.first;
-         rt; rt= rt->next)
-      rt->mdl_request.ticket= NULL;
-
-    if (protocol->write())
-      goto err;
-  }
-
-  my_eof(thd);
-  DBUG_RETURN(FALSE);
-
-err:
-  trans_rollback_stmt(thd);
-  trans_rollback(thd);
-  close_thread_tables(thd);			// Shouldn't be needed
-  thd->mdl_context.release_transactional_locks();
-  if (table)
-    table->table=0;
-  DBUG_RETURN(TRUE);
-}
-
-
-bool mysql_repair_table(THD* thd, TABLE_LIST* tables, HA_CHECK_OPT* check_opt)
-{
-  DBUG_ENTER("mysql_repair_table");
-  DBUG_RETURN(mysql_admin_table(thd, tables, check_opt,
-				"repair", TL_WRITE, 1,
-                                test(check_opt->sql_flags & TT_USEFRM),
-                                HA_OPEN_FOR_REPAIR,
-				&prepare_for_repair,
-				&handler::ha_repair, 0));
-}
-
-
-bool mysql_optimize_table(THD* thd, TABLE_LIST* tables, HA_CHECK_OPT* check_opt)
-{
-  DBUG_ENTER("mysql_optimize_table");
-  DBUG_RETURN(mysql_admin_table(thd, tables, check_opt,
-				"optimize", TL_WRITE, 1,0,0,0,
-				&handler::ha_optimize, 0));
-}
-
-
-/*
-  Assigned specified indexes for a table into key cache
-
-  SYNOPSIS
-    mysql_assign_to_keycache()
-    thd		Thread object
-    tables	Table list (one table only)
-
-  RETURN VALUES
-   FALSE ok
-   TRUE  error
-*/
-
-bool mysql_assign_to_keycache(THD* thd, TABLE_LIST* tables,
-			     LEX_STRING *key_cache_name)
-{
-  HA_CHECK_OPT check_opt;
-  KEY_CACHE *key_cache;
-  DBUG_ENTER("mysql_assign_to_keycache");
-
-  check_opt.init();
-  mysql_mutex_lock(&LOCK_global_system_variables);
-  if (!(key_cache= get_key_cache(key_cache_name)))
-  {
-    mysql_mutex_unlock(&LOCK_global_system_variables);
-    my_error(ER_UNKNOWN_KEY_CACHE, MYF(0), key_cache_name->str);
-    DBUG_RETURN(TRUE);
-  }
-  mysql_mutex_unlock(&LOCK_global_system_variables);
-  check_opt.key_cache= key_cache;
-  DBUG_RETURN(mysql_admin_table(thd, tables, &check_opt,
-				"assign_to_keycache", TL_READ_NO_INSERT, 0, 0,
-				0, 0, &handler::assign_to_keycache, 0));
-}
-
-
-/*
-  Preload specified indexes for a table into key cache
-
-  SYNOPSIS
-    mysql_preload_keys()
-    thd		Thread object
-    tables	Table list (one table only)
-
-  RETURN VALUES
-    FALSE ok
-    TRUE  error
-*/
-
-bool mysql_preload_keys(THD* thd, TABLE_LIST* tables)
-{
-  DBUG_ENTER("mysql_preload_keys");
-  /*
-    We cannot allow concurrent inserts. The storage engine reads
-    directly from the index file, bypassing the cache. It could read
-    outdated information if parallel inserts into cache blocks happen.
-  */
-  DBUG_RETURN(mysql_admin_table(thd, tables, 0,
-				"preload_keys", TL_READ_NO_INSERT, 0, 0, 0, 0,
-				&handler::preload_keys, 0));
-}
-
-
 /*
   Create a table identical to the specified table
 
@@ -5293,6 +4454,7 @@ bool mysql_create_like_table(THD* thd, TABLE_LIST* table, TABLE_LIST* src_table,
   HA_CREATE_INFO local_create_info;
   Alter_info local_alter_info;
   bool res= TRUE;
+  bool is_trans= FALSE;
   uint not_used;
   DBUG_ENTER("mysql_create_like_table");
 
@@ -5344,7 +4506,7 @@ bool mysql_create_like_table(THD* thd, TABLE_LIST* table, TABLE_LIST* src_table,
 
   if ((res= mysql_create_table_no_lock(thd, table->db, table->table_name,
                                        &local_create_info, &local_alter_info,
-                                       FALSE, 0)))
+                                       FALSE, 0, &is_trans)))
     goto err;
 
   /*
@@ -5352,11 +4514,9 @@ bool mysql_create_like_table(THD* thd, TABLE_LIST* table, TABLE_LIST* src_table,
     non-temporary table.
   */
   DBUG_ASSERT((create_info->options & HA_LEX_CREATE_TMP_TABLE) ||
-              local_create_info.table_existed ||
               thd->mdl_context.is_lock_owner(MDL_key::TABLE, table->db,
                                              table->table_name,
                                              MDL_EXCLUSIVE));
-
   /*
     We have to write the query before we unlock the tables.
   */
@@ -5427,7 +4587,7 @@ bool mysql_create_like_table(THD* thd, TABLE_LIST* table, TABLE_LIST* src_table,
       Case 3 and 4 does nothing under RBR
     */
   }
-  else if (write_bin_log(thd, TRUE, thd->query(), thd->query_length()))
+  else if (write_bin_log(thd, TRUE, thd->query(), thd->query_length(), is_trans))
     goto err;
 
 err:
@@ -5435,29 +4595,6 @@ err:
 }
 
 
-bool mysql_analyze_table(THD* thd, TABLE_LIST* tables, HA_CHECK_OPT* check_opt)
-{
-  thr_lock_type lock_type = TL_READ_NO_INSERT;
-
-  DBUG_ENTER("mysql_analyze_table");
-  DBUG_RETURN(mysql_admin_table(thd, tables, check_opt,
-				"analyze", lock_type, 1, 0, 0, 0,
-				&handler::ha_analyze, 0));
-}
-
-
-bool mysql_check_table(THD* thd, TABLE_LIST* tables,HA_CHECK_OPT* check_opt)
-{
-  thr_lock_type lock_type = TL_READ_NO_INSERT;
-
-  DBUG_ENTER("mysql_check_table");
-  DBUG_RETURN(mysql_admin_table(thd, tables, check_opt,
-				"check", lock_type,
-				0, 0, HA_OPEN_FOR_REPAIR, 0,
-				&handler::ha_check, &view_checksum));
-}
-
-
 /* table_list should contain just one table */
 static int
 mysql_discard_or_import_tablespace(THD *thd,
@@ -5568,7 +4705,7 @@ is_index_maintenance_unique (TABLE *table, Alter_info *alter_info)
 
 /*
   SYNOPSIS
-    compare_tables()
+    mysql_compare_tables()
       table                     The original table.
       alter_info                Alter options, fields and keys for the new
                                 table.
@@ -5608,17 +4745,16 @@ is_index_maintenance_unique (TABLE *table, Alter_info *alter_info)
     FALSE  success
 */
 
-static
 bool
-compare_tables(TABLE *table,
-               Alter_info *alter_info,
-               HA_CREATE_INFO *create_info,
-               uint order_num,
-               enum_alter_table_change_level *need_copy_table,
-               KEY **key_info_buffer,
-               uint **index_drop_buffer, uint *index_drop_count,
-               uint **index_add_buffer, uint *index_add_count,
-               uint *candidate_key_count)
+mysql_compare_tables(TABLE *table,
+                     Alter_info *alter_info,
+                     HA_CREATE_INFO *create_info,
+                     uint order_num,
+                     enum_alter_table_change_level *need_copy_table,
+                     KEY **key_info_buffer,
+                     uint **index_drop_buffer, uint *index_drop_count,
+                     uint **index_add_buffer, uint *index_add_count,
+                     uint *candidate_key_count)
 {
   Field **f_ptr, *field;
   uint changes= 0, tmp;
@@ -5634,7 +4770,7 @@ compare_tables(TABLE *table,
   */
   bool varchar= create_info->varchar;
   bool not_nullable= true;
-  DBUG_ENTER("compare_tables");
+  DBUG_ENTER("mysql_compare_tables");
 
   /*
     Create a copy of alter_info.
@@ -5645,7 +4781,7 @@ compare_tables(TABLE *table,
     mysql_prepare_create_table.  Unfortunately,
     mysql_prepare_create_table performs its transformations
     "in-place", that is, modifies the argument.  Since we would
-    like to keep compare_tables() idempotent (not altering any
+    like to keep mysql_compare_tables() idempotent (not altering any
     of the arguments) we create a copy of alter_info here and
     pass it to mysql_prepare_create_table, then use the result
     to evaluate possibility of fast ALTER TABLE, and then
@@ -6025,7 +5161,7 @@ blob_length_by_type(enum_field_types type)
   @retval FALSE  success
 */
 
-static bool
+bool
 mysql_prepare_alter_table(THD *thd, TABLE *table,
                           HA_CREATE_INFO *create_info,
                           Alter_info *alter_info)
@@ -6434,7 +5570,7 @@ err:
     Important is the fact, that this function tries to do as little work as
     possible, by finding out whether a intermediate table is needed to copy
     data into and when finishing the altering to use it as the original table.
-    For this reason the function compare_tables() is called, which decides
+    For this reason the function mysql_compare_tables() is called, which decides
     based on all kind of data how similar are the new and the original
     tables.
 
@@ -6775,7 +5911,6 @@ bool mysql_alter_table(THD *thd,char *new_db, char *new_name,
       else
       {
         *fn_ext(new_name)=0;
-        mysql_mutex_lock(&LOCK_open);
         if (mysql_rename_table(old_db_type,db,table_name,new_db,new_alias, 0))
           error= -1;
         else if (Table_triggers_list::change_table_name(thd, db, table_name,
@@ -6785,7 +5920,6 @@ bool mysql_alter_table(THD *thd,char *new_db, char *new_name,
                                     table_name, 0);
           error= -1;
         }
-        mysql_mutex_unlock(&LOCK_open);
       }
     }
 
@@ -6872,13 +6006,13 @@ bool mysql_alter_table(THD *thd,char *new_db, char *new_name,
   {
     enum_alter_table_change_level need_copy_table_res;
     /* Check how much the tables differ. */
-    if (compare_tables(table, alter_info,
-                       create_info, order_num,
-                       &need_copy_table_res,
-                       &key_info_buffer,
-                       &index_drop_buffer, &index_drop_count,
-                       &index_add_buffer, &index_add_count,
-                       &candidate_key_count))
+    if (mysql_compare_tables(table, alter_info,
+                             create_info, order_num,
+                             &need_copy_table_res,
+                             &key_info_buffer,
+                             &index_drop_buffer, &index_drop_count,
+                             &index_add_buffer, &index_add_count,
+                             &candidate_key_count))
       goto err;
    
     DBUG_EXECUTE_IF("alter_table_only_metadata_change", {
@@ -7140,7 +6274,7 @@ bool mysql_alter_table(THD *thd,char *new_db, char *new_name,
   error= mysql_create_table_no_lock(thd, new_db, tmp_name,
                                     create_info,
                                     alter_info,
-                                    1, 0);
+                                    1, 0, NULL);
   reenable_binlog(thd);
   if (error)
     goto err;
@@ -7392,7 +6526,7 @@ bool mysql_alter_table(THD *thd,char *new_db, char *new_name,
     it should become the actual table. Later, we will recycle the old table.
     However, in case of ALTER TABLE RENAME there might be no intermediate
     table. This is when the old and new tables are compatible, according to
-    compare_table(). Then, we need one additional call to
+    mysql_compare_table(). Then, we need one additional call to
     mysql_rename_table() with flag NO_FRM_RENAME, which does nothing else but
     actual rename in the SE and the FRM is not touched. Note that, if the
     table is renamed and the SE is also changed, then an intermediate table
@@ -7404,7 +6538,6 @@ bool mysql_alter_table(THD *thd,char *new_db, char *new_name,
     /* This type cannot happen in regular ALTER. */
     new_db_type= old_db_type= NULL;
   }
-  mysql_mutex_lock(&LOCK_open);
   if (mysql_rename_table(old_db_type, db, table_name, db, old_name,
                          FN_TO_IS_TMP))
   {
@@ -7431,8 +6564,6 @@ bool mysql_alter_table(THD *thd,char *new_db, char *new_name,
   if (! error)
     (void) quick_rm_table(old_db_type, db, old_name, FN_IS_TMP);
 
-  mysql_mutex_unlock(&LOCK_open);
-
   if (error)
   {
     /* This shouldn't happen. But let us play it safe. */
@@ -7609,6 +6740,54 @@ err_with_mdl:
 }
 /* mysql_alter_table */
 
+
+
+/**
+  Prepare the transaction for the alter table's copy phase.
+*/
+
+bool mysql_trans_prepare_alter_copy_data(THD *thd)
+{
+  DBUG_ENTER("mysql_prepare_alter_copy_data");
+  /*
+    Turn off recovery logging since rollback of an alter table is to
+    delete the new table so there is no need to log the changes to it.
+    
+    This needs to be done before external_lock.
+  */
+  if (ha_enable_transaction(thd, FALSE))
+    DBUG_RETURN(TRUE);
+  DBUG_RETURN(FALSE);
+}
+
+
+/**
+  Commit the copy phase of the alter table.
+*/
+
+bool mysql_trans_commit_alter_copy_data(THD *thd)
+{
+  bool error= FALSE;
+  DBUG_ENTER("mysql_commit_alter_copy_data");
+
+  if (ha_enable_transaction(thd, TRUE))
+    DBUG_RETURN(TRUE);
+  
+  /*
+    Ensure that the new table is saved properly to disk before installing
+    the new .frm.
+    And that InnoDB's internal latches are released, to avoid deadlock
+    when waiting on other instances of the table before rename (Bug#54747).
+  */
+  if (trans_commit_stmt(thd))
+    error= TRUE;
+  if (trans_commit_implicit(thd))
+    error= TRUE;
+
+  DBUG_RETURN(error);
+}
+
+
 static int
 copy_data_between_tables(TABLE *from,TABLE *to,
 			 List<Create_field> &create,
@@ -7635,14 +6814,7 @@ copy_data_between_tables(TABLE *from,TABLE *to,
   ulonglong prev_insert_id;
   DBUG_ENTER("copy_data_between_tables");
 
-  /*
-    Turn off recovery logging since rollback of an alter table is to
-    delete the new table so there is no need to log the changes to it.
-    
-    This needs to be done before external_lock
-  */
-  error= ha_enable_transaction(thd, FALSE);
-  if (error)
+  if (mysql_trans_prepare_alter_copy_data(thd))
     DBUG_RETURN(-1);
   
   if (!(copy= new Copy_field[to->s->fields]))
@@ -7801,20 +6973,8 @@ copy_data_between_tables(TABLE *from,TABLE *to,
   }
   to->file->extra(HA_EXTRA_NO_IGNORE_DUP_KEY);
 
-  if (ha_enable_transaction(thd, TRUE))
-  {
+  if (mysql_trans_commit_alter_copy_data(thd))
     error= 1;
-    goto err;
-  }
-  
-  /*
-    Ensure that the new table is saved properly to disk so that we
-    can do a rename
-  */
-  if (trans_commit_stmt(thd))
-    error=1;
-  if (trans_commit_implicit(thd))
-    error=1;
 
  err:
   thd->variables.sql_mode= save_sql_mode;
diff --git a/sql/sql_table.h b/sql/sql_table.h
index dca4b706605..eb0b1aa94dd 100644
--- a/sql/sql_table.h
+++ b/sql/sql_table.h
@@ -20,7 +20,6 @@
 #include "my_sys.h"                             // pthread_mutex_t
 
 class Alter_info;
-class Alter_info;
 class Create_field;
 struct TABLE_LIST;
 class THD;
@@ -28,11 +27,12 @@ struct TABLE;
 struct handlerton;
 typedef struct st_ha_check_opt HA_CHECK_OPT;
 typedef struct st_ha_create_information HA_CREATE_INFO;
+typedef struct st_key KEY;
 typedef struct st_key_cache KEY_CACHE;
 typedef struct st_lock_param_type ALTER_PARTITION_PARAM_TYPE;
-typedef struct st_lock_param_type ALTER_PARTITION_PARAM_TYPE;
 typedef struct st_mysql_lex_string LEX_STRING;
 typedef struct st_order ORDER;
+class Alter_table_change_level;
 
 enum ddl_log_entry_code
 {
@@ -138,13 +138,27 @@ bool mysql_create_table_no_lock(THD *thd, const char *db,
                                 const char *table_name,
                                 HA_CREATE_INFO *create_info,
                                 Alter_info *alter_info,
-                                bool tmp_table, uint select_field_count);
-
+                                bool tmp_table, uint select_field_count,
+                                bool *is_trans);
+bool mysql_prepare_alter_table(THD *thd, TABLE *table,
+                               HA_CREATE_INFO *create_info,
+                               Alter_info *alter_info);
+bool mysql_trans_prepare_alter_copy_data(THD *thd);
+bool mysql_trans_commit_alter_copy_data(THD *thd);
 bool mysql_alter_table(THD *thd, char *new_db, char *new_name,
                        HA_CREATE_INFO *create_info,
                        TABLE_LIST *table_list,
                        Alter_info *alter_info,
                        uint order_num, ORDER *order, bool ignore);
+bool mysql_compare_tables(TABLE *table,
+                          Alter_info *alter_info,
+                          HA_CREATE_INFO *create_info,
+                          uint order_num,
+                          Alter_table_change_level *need_copy_table,
+                          KEY **key_info_buffer,
+                          uint **index_drop_buffer, uint *index_drop_count,
+                          uint **index_add_buffer, uint *index_add_count,
+                          uint *candidate_key_count);
 bool mysql_recreate_table(THD *thd, TABLE_LIST *table_list);
 bool mysql_create_like_table(THD *thd, TABLE_LIST *table,
                              TABLE_LIST *src_table,
@@ -158,19 +172,6 @@ bool mysql_restore_table(THD* thd, TABLE_LIST* table_list);
 
 bool mysql_checksum_table(THD* thd, TABLE_LIST* table_list,
                           HA_CHECK_OPT* check_opt);
-bool mysql_check_table(THD* thd, TABLE_LIST* table_list,
-                       HA_CHECK_OPT* check_opt);
-bool mysql_repair_table(THD* thd, TABLE_LIST* table_list,
-                        HA_CHECK_OPT* check_opt);
-bool mysql_analyze_table(THD* thd, TABLE_LIST* table_list,
-                         HA_CHECK_OPT* check_opt);
-bool mysql_optimize_table(THD* thd, TABLE_LIST* table_list,
-                          HA_CHECK_OPT* check_opt);
-bool mysql_assign_to_keycache(THD* thd, TABLE_LIST* table_list,
-                              LEX_STRING *key_cache_name);
-bool mysql_preload_keys(THD* thd, TABLE_LIST* table_list);
-int reassign_keycache_tables(THD* thd, KEY_CACHE *src_cache,
-                             KEY_CACHE *dst_cache);
 bool mysql_rm_table(THD *thd,TABLE_LIST *tables, my_bool if_exists,
                     my_bool drop_temporary);
 int mysql_rm_table_part2(THD *thd, TABLE_LIST *tables, bool if_exists,
diff --git a/sql/sql_test.cc b/sql/sql_test.cc
index 501c4cf6a94..9d0614f8529 100644
--- a/sql/sql_test.cc
+++ b/sql/sql_test.cc
@@ -118,7 +118,7 @@ static void print_cached_tables(void)
 	printf("unused_links isn't linked properly\n");
 	return;
       }
-    } while (count++ < table_cache_count && (lnk=lnk->next) != start_link);
+    } while (count++ < cached_open_tables() && (lnk=lnk->next) != start_link);
     if (lnk != start_link)
     {
       printf("Unused_links aren't connected\n");
@@ -416,7 +416,7 @@ static void display_table_locks(void)
   void *saved_base;
   DYNAMIC_ARRAY saved_table_locks;
 
-  (void) my_init_dynamic_array(&saved_table_locks,sizeof(TABLE_LOCK_INFO), table_cache_count + 20,50);
+  (void) my_init_dynamic_array(&saved_table_locks,sizeof(TABLE_LOCK_INFO), cached_open_tables() + 20,50);
   mysql_mutex_lock(&THR_LOCK_lock);
   for (list= thr_lock_thread_list; list; list= list_rest(list))
   {
diff --git a/sql/sql_trigger.cc b/sql/sql_trigger.cc
index a5664b00287..b81461e8371 100644
--- a/sql/sql_trigger.cc
+++ b/sql/sql_trigger.cc
@@ -394,9 +394,7 @@ bool mysql_create_or_drop_trigger(THD *thd, TABLE_LIST *tables, bool create)
   /*
     We don't want perform our operations while global read lock is held
     so we have to wait until its end and then prevent it from occurring
-    again until we are done, unless we are under lock tables. (Acquiring
-    LOCK_open is not enough because global read lock is held without holding
-    LOCK_open).
+    again until we are done, unless we are under lock tables.
   */
   if (!thd->locked_tables_mode &&
       thd->global_read_lock.wait_if_global_read_lock(thd, FALSE, TRUE))
@@ -516,11 +514,9 @@ bool mysql_create_or_drop_trigger(THD *thd, TABLE_LIST *tables, bool create)
       goto end;
   }
 
-  mysql_mutex_lock(&LOCK_open);
   result= (create ?
            table->triggers->create_trigger(thd, tables, &stmt_query):
            table->triggers->drop_trigger(thd, tables, &stmt_query));
-  mysql_mutex_unlock(&LOCK_open);
 
   if (result)
     goto end;
@@ -1680,9 +1676,6 @@ bool add_table_for_trigger(THD *thd,
   @param db       schema for table
   @param name     name for table
 
-  @note
-    The calling thread should hold the LOCK_open mutex;
-
   @retval
     False   success
   @retval
@@ -1912,14 +1905,10 @@ bool Table_triggers_list::change_table_name(THD *thd, const char *db,
 
   /*
     This method interfaces the mysql server code protected by
-    either LOCK_open mutex or with an exclusive metadata lock.
-    In the future, only an exclusive metadata lock will be enough.
+    an exclusive metadata lock.
   */
-#ifndef DBUG_OFF
-  if (thd->mdl_context.is_lock_owner(MDL_key::TABLE, db, old_table,
-                                     MDL_EXCLUSIVE))
-    mysql_mutex_assert_owner(&LOCK_open);
-#endif
+  DBUG_ASSERT(thd->mdl_context.is_lock_owner(MDL_key::TABLE, db, old_table,
+                                             MDL_EXCLUSIVE));
 
   DBUG_ASSERT(my_strcasecmp(table_alias_charset, db, new_db) ||
               my_strcasecmp(table_alias_charset, old_table, new_table));
diff --git a/sql/sql_truncate.cc b/sql/sql_truncate.cc
index ee5c707cd69..a61abdafe3e 100644
--- a/sql/sql_truncate.cc
+++ b/sql/sql_truncate.cc
@@ -13,7 +13,6 @@
    along with this program; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
 
-#include "sql_truncate.h"
 #include "sql_priv.h"
 #include "transaction.h"
 #include "debug_sync.h"
@@ -25,6 +24,9 @@
 #include "sql_handler.h" // mysql_ha_rm_tables
 #include "datadict.h"    // dd_recreate_table()
 #include "lock.h"        // MYSQL_OPEN_TEMPORARY_ONLY
+#include "sql_acl.h"     // DROP_ACL
+#include "sql_parse.h"   // check_one_table_access()
+#include "sql_truncate.h"
 
 
 /*
@@ -242,6 +244,7 @@ static bool open_and_lock_table_for_truncate(THD *thd, TABLE_LIST *table_ref,
                                              MDL_ticket **ticket_downgrade)
 {
   TABLE *table= NULL;
+  handlerton *table_type;
   DBUG_ENTER("open_and_lock_table_for_truncate");
 
   DBUG_ASSERT(table_ref->lock_type == TL_WRITE);
@@ -265,7 +268,8 @@ static bool open_and_lock_table_for_truncate(THD *thd, TABLE_LIST *table_ref,
                                             table_ref->table_name, FALSE)))
       DBUG_RETURN(TRUE);
 
-    *hton_can_recreate= ha_check_storage_engine_flag(table->s->db_type(),
+    table_type= table->s->db_type();
+    *hton_can_recreate= ha_check_storage_engine_flag(table_type,
                                                      HTON_CAN_RECREATE);
     table_ref->mdl_request.ticket= table->mdl_ticket;
   }
@@ -281,11 +285,25 @@ static bool open_and_lock_table_for_truncate(THD *thd, TABLE_LIST *table_ref,
                          MYSQL_OPEN_SKIP_TEMPORARY))
       DBUG_RETURN(TRUE);
 
-    if (dd_check_storage_engine_flag(thd, table_ref->db, table_ref->table_name,
-                                     HTON_CAN_RECREATE, hton_can_recreate))
+    if (dd_frm_storage_engine(thd, table_ref->db, table_ref->table_name,
+                              &table_type))
       DBUG_RETURN(TRUE);
+    *hton_can_recreate= ha_check_storage_engine_flag(table_type,
+                                                     HTON_CAN_RECREATE);
   }
 
+#ifdef WITH_PARTITION_STORAGE_ENGINE
+  /*
+    TODO: Add support for TRUNCATE PARTITION for NDB and other engines
+    supporting native partitioning.
+  */
+  if (thd->lex->alter_info.flags & ALTER_ADMIN_PARTITION &&
+      table_type != partition_hton)
+  {
+    my_error(ER_PARTITION_MGMT_ON_NONPARTITIONED, MYF(0));
+    DBUG_RETURN(TRUE);
+  }
+#endif
   DEBUG_SYNC(thd, "lock_table_for_truncate");
 
   if (*hton_can_recreate)
@@ -310,10 +328,8 @@ static bool open_and_lock_table_for_truncate(THD *thd, TABLE_LIST *table_ref,
           upgrade_shared_lock_to_exclusive(table_ref->mdl_request.ticket,
                                            timeout))
         DBUG_RETURN(TRUE);
-      mysql_mutex_lock(&LOCK_open);
       tdc_remove_table(thd, TDC_RT_REMOVE_ALL, table_ref->db,
-                       table_ref->table_name);
-      mysql_mutex_unlock(&LOCK_open);
+                       table_ref->table_name, FALSE);
     }
   }
   else
@@ -477,3 +493,27 @@ bool mysql_truncate_table(THD *thd, TABLE_LIST *table_ref)
   DBUG_RETURN(test(error));
 }
 
+
+bool Truncate_statement::execute(THD *thd)
+{
+  TABLE_LIST *first_table= thd->lex->select_lex.table_list.first;
+  bool res= TRUE;
+  DBUG_ENTER("Truncate_statement::execute");
+
+  if (check_one_table_access(thd, DROP_ACL, first_table))
+    goto error;
+  /*
+    Don't allow this within a transaction because we want to use
+    re-generate table
+  */
+  if (thd->in_active_multi_stmt_transaction())
+  {
+    my_message(ER_LOCK_OR_ACTIVE_TRANSACTION,
+               ER(ER_LOCK_OR_ACTIVE_TRANSACTION), MYF(0));
+    goto error;
+  }
+  if (! (res= mysql_truncate_table(thd, first_table)))
+    my_ok(thd);
+error:
+  DBUG_RETURN(res);
+}
diff --git a/sql/sql_truncate.h b/sql/sql_truncate.h
index 11c07c7187c..b8b1d3da53d 100644
--- a/sql/sql_truncate.h
+++ b/sql/sql_truncate.h
@@ -20,4 +20,30 @@ struct TABLE_LIST;
 
 bool mysql_truncate_table(THD *thd, TABLE_LIST *table_ref);
 
+/**
+  Truncate_statement represents the TRUNCATE statement.
+*/
+class Truncate_statement : public Sql_statement
+{
+public:
+  /**
+    Constructor, used to represent a ALTER TABLE statement.
+    @param lex the LEX structure for this statement.
+  */
+  Truncate_statement(LEX *lex)
+    : Sql_statement(lex)
+  {}
+
+  ~Truncate_statement()
+  {}
+
+  /**
+    Execute a TRUNCATE statement at runtime.
+    @param thd the current thread.
+    @return false on success.
+  */
+  bool execute(THD *thd);
+};
+
+
 #endif
diff --git a/sql/sql_view.cc b/sql/sql_view.cc
index be13349b5a1..5fdf7b8d850 100644
--- a/sql/sql_view.cc
+++ b/sql/sql_view.cc
@@ -433,8 +433,6 @@ bool mysql_create_view(THD *thd, TABLE_LIST *views,
     goto err;
 
   lex->link_first_table_back(view, link_to_local);
-  view->open_strategy= TABLE_LIST::OPEN_STUB;
-  view->lock_strategy= TABLE_LIST::OTLS_NONE;
   view->open_type= OT_BASE_ONLY;
 
   if (open_and_lock_tables(thd, lex->query_tables, TRUE, 0))
@@ -658,7 +656,6 @@ bool mysql_create_view(THD *thd, TABLE_LIST *views,
     goto err;
   }
 
-  mysql_mutex_lock(&LOCK_open);
   res= mysql_register_view(thd, view, mode);
 
   if (mysql_bin_log.is_open())
@@ -705,7 +702,6 @@ bool mysql_create_view(THD *thd, TABLE_LIST *views,
       res= TRUE;
   }
 
-  mysql_mutex_unlock(&LOCK_open);
   if (mode != VIEW_CREATE_NEW)
     query_cache_invalidate3(thd, view, 0);
   thd->global_read_lock.start_waiting_global_read_lock(thd);
@@ -1656,10 +1652,8 @@ bool mysql_drop_view(THD *thd, TABLE_LIST *views, enum_drop_mode drop_mode)
                        MYSQL_OPEN_SKIP_TEMPORARY))
     DBUG_RETURN(TRUE);
 
-  mysql_mutex_lock(&LOCK_open);
   for (view= views; view; view= view->next_local)
   {
-    TABLE_SHARE *share;
     frm_type_enum type= FRMTYPE_ERROR;
     build_table_filename(path, sizeof(path) - 1,
                          view->db, view->table_name, reg_ext, 0);
@@ -1698,16 +1692,12 @@ bool mysql_drop_view(THD *thd, TABLE_LIST *views, enum_drop_mode drop_mode)
     some_views_deleted= TRUE;
 
     /*
-      For a view, there is only one table_share object which should never
-      be used outside of LOCK_open
+      For a view, there is a TABLE_SHARE object, but its
+      ref_count never goes above 1. Remove it from the table
+      definition cache, in case the view was cached.
     */
-    if ((share= get_cached_table_share(view->db, view->table_name)))
-    {
-      DBUG_ASSERT(share->ref_count == 0);
-      share->ref_count++;
-      share->version= 0;
-      release_table_share(share);
-    }
+    tdc_remove_table(thd, TDC_RT_REMOVE_ALL, view->db, view->table_name,
+                     FALSE);
     query_cache_invalidate3(thd, view, 0);
     sp_cache_invalidate();
   }
@@ -1732,8 +1722,6 @@ bool mysql_drop_view(THD *thd, TABLE_LIST *views, enum_drop_mode drop_mode)
       something_wrong= 1;
   }
 
-  mysql_mutex_unlock(&LOCK_open);
-  
   if (something_wrong)
   {
     DBUG_RETURN(TRUE);
diff --git a/sql/sql_yacc.yy b/sql/sql_yacc.yy
index ca951897055..6a510c04054 100644
--- a/sql/sql_yacc.yy
+++ b/sql/sql_yacc.yy
@@ -51,6 +51,10 @@
 #include "sp_pcontext.h"
 #include "sp_rcontext.h"
 #include "sp.h"
+#include "sql_alter.h"                         // Alter_table*_statement
+#include "sql_truncate.h"                      // Truncate_statement
+#include "sql_admin.h"                         // Analyze/Check..._table_stmt
+#include "sql_partition_admin.h"               // Alter_table_*_partition_stmt
 #include "sql_signal.h"
 #include "event_parse_data.h"
 #include <myisam.h>
@@ -2027,6 +2031,12 @@ create:
                                                    TL_OPTION_UPDATING,
                                                    TL_WRITE, MDL_EXCLUSIVE))
               MYSQL_YYABORT;
+            /*
+              For CREATE TABLE, an non-existing table is not an error.
+              Instruct open_tables() to just take an MDL lock if the
+              table does not exist.
+            */
+            lex->query_tables->open_strategy= TABLE_LIST::OPEN_IF_EXISTS;
             lex->alter_info.reset();
             lex->col_list.empty();
             lex->change=NullS;
@@ -6172,9 +6182,20 @@ alter:
             lex->no_write_to_binlog= 0;
             lex->create_info.storage_media= HA_SM_DEFAULT;
             lex->create_last_non_select_table= lex->last_table();
+            DBUG_ASSERT(!lex->m_stmt);
           }
           alter_commands
-          {}
+          {
+            THD *thd= YYTHD;
+            LEX *lex= thd->lex;
+            if (!lex->m_stmt)
+            {
+              /* Create a generic ALTER TABLE statment. */
+              lex->m_stmt= new (thd->mem_root) Alter_table_statement(lex);
+              if (lex->m_stmt == NULL)
+                MYSQL_YYABORT;
+            }
+          }
         | ALTER DATABASE ident_or_empty
           {
             Lex->create_info.default_table_charset= NULL;
@@ -6393,38 +6414,54 @@ alter_commands:
         | OPTIMIZE PARTITION_SYM opt_no_write_to_binlog
           all_or_alt_part_name_list
           {
-            LEX *lex= Lex;
-            lex->sql_command= SQLCOM_OPTIMIZE;
-            lex->alter_info.flags|= ALTER_ADMIN_PARTITION;
+            THD *thd= YYTHD;
+            LEX *lex= thd->lex;
             lex->no_write_to_binlog= $3;
             lex->check_opt.init();
+            DBUG_ASSERT(!lex->m_stmt);
+            lex->m_stmt= new (thd->mem_root)
+                          Alter_table_optimize_partition_statement(lex);
+            if (lex->m_stmt == NULL)
+              MYSQL_YYABORT;
           }
           opt_no_write_to_binlog
         | ANALYZE_SYM PARTITION_SYM opt_no_write_to_binlog
           all_or_alt_part_name_list
           {
-            LEX *lex= Lex;
-            lex->sql_command= SQLCOM_ANALYZE;
-            lex->alter_info.flags|= ALTER_ADMIN_PARTITION;
+            THD *thd= YYTHD;
+            LEX *lex= thd->lex;
             lex->no_write_to_binlog= $3;
             lex->check_opt.init();
+            DBUG_ASSERT(!lex->m_stmt);
+            lex->m_stmt= new (thd->mem_root)
+                          Alter_table_analyze_partition_statement(lex);
+            if (lex->m_stmt == NULL)
+              MYSQL_YYABORT;
           }
         | CHECK_SYM PARTITION_SYM all_or_alt_part_name_list
           {
-            LEX *lex= Lex;
-            lex->sql_command= SQLCOM_CHECK;
-            lex->alter_info.flags|= ALTER_ADMIN_PARTITION;
+            THD *thd= YYTHD;
+            LEX *lex= thd->lex;
             lex->check_opt.init();
+            DBUG_ASSERT(!lex->m_stmt);
+            lex->m_stmt= new (thd->mem_root)
+                          Alter_table_check_partition_statement(lex);
+            if (lex->m_stmt == NULL)
+              MYSQL_YYABORT;
           }
           opt_mi_check_type
         | REPAIR PARTITION_SYM opt_no_write_to_binlog
           all_or_alt_part_name_list
           {
-            LEX *lex= Lex;
-            lex->sql_command= SQLCOM_REPAIR;
-            lex->alter_info.flags|= ALTER_ADMIN_PARTITION;
+            THD *thd= YYTHD;
+            LEX *lex= thd->lex;
             lex->no_write_to_binlog= $3;
             lex->check_opt.init();
+            DBUG_ASSERT(!lex->m_stmt);
+            lex->m_stmt= new (thd->mem_root)
+                          Alter_table_repair_partition_statement(lex);
+            if (lex->m_stmt == NULL)
+              MYSQL_YYABORT;
           }
           opt_mi_repair_type
         | COALESCE PARTITION_SYM opt_no_write_to_binlog real_ulong_num
@@ -6436,12 +6473,14 @@ alter_commands:
           }
         | TRUNCATE_SYM PARTITION_SYM all_or_alt_part_name_list
           {
-            LEX *lex= Lex;
-            lex->sql_command= SQLCOM_TRUNCATE;
-            lex->alter_info.flags|= ALTER_ADMIN_PARTITION;
+            THD *thd= YYTHD;
+            LEX *lex= thd->lex;
             lex->check_opt.init();
-            lex->query_tables->mdl_request.set_type(MDL_SHARED_NO_READ_WRITE);
-            lex->query_tables->lock_type= TL_WRITE;
+            DBUG_ASSERT(!lex->m_stmt);
+            lex->m_stmt= new (thd->mem_root)
+                          Alter_table_truncate_partition_statement(lex);
+            if (lex->m_stmt == NULL)
+              MYSQL_YYABORT;
           }
         | reorg_partition_rule
         ;
@@ -6878,7 +6917,14 @@ repair:
             YYPS->m_lock_type= TL_UNLOCK;
           }
           table_list opt_mi_repair_type
-          {}
+          {
+            THD *thd= YYTHD;
+            LEX* lex= thd->lex;
+            DBUG_ASSERT(!lex->m_stmt);
+            lex->m_stmt= new (thd->mem_root) Repair_table_statement(lex);
+            if (lex->m_stmt == NULL)
+              MYSQL_YYABORT;
+          }
         ;
 
 opt_mi_repair_type:
@@ -6909,7 +6955,14 @@ analyze:
             YYPS->m_lock_type= TL_UNLOCK;
           }
           table_list
-          {}
+          {
+            THD *thd= YYTHD;
+            LEX* lex= thd->lex;
+            DBUG_ASSERT(!lex->m_stmt);
+            lex->m_stmt= new (thd->mem_root) Analyze_table_statement(lex);
+            if (lex->m_stmt == NULL)
+              MYSQL_YYABORT;
+          }
         ;
 
 binlog_base64_event:
@@ -6937,7 +6990,14 @@ check:
             YYPS->m_lock_type= TL_UNLOCK;
           }
           table_list opt_mi_check_type
-          {}
+          {
+            THD *thd= YYTHD;
+            LEX* lex= thd->lex;
+            DBUG_ASSERT(!lex->m_stmt);
+            lex->m_stmt= new (thd->mem_root) Check_table_statement(lex);
+            if (lex->m_stmt == NULL)
+              MYSQL_YYABORT;
+          }
         ;
 
 opt_mi_check_type:
@@ -6971,7 +7031,14 @@ optimize:
             YYPS->m_lock_type= TL_UNLOCK;
           }
           table_list
-          {}
+          {
+            THD *thd= YYTHD;
+            LEX* lex= thd->lex;
+            DBUG_ASSERT(!lex->m_stmt);
+            lex->m_stmt= new (thd->mem_root) Optimize_table_statement(lex);
+            if (lex->m_stmt == NULL)
+              MYSQL_YYABORT;
+          }
         ;
 
 opt_no_write_to_binlog:
@@ -10698,7 +10765,14 @@ truncate:
             YYPS->m_mdl_type= MDL_SHARED_NO_READ_WRITE;
           }
           table_name
-          {}
+          {
+            THD *thd= YYTHD;
+            LEX* lex= thd->lex;
+            DBUG_ASSERT(!lex->m_stmt);
+            lex->m_stmt= new (thd->mem_root) Truncate_statement(lex);
+            if (lex->m_stmt == NULL)
+              MYSQL_YYABORT;
+          }
         ;
 
 opt_table_sym:
@@ -11202,9 +11276,8 @@ opt_with_read_lock:
           {
             TABLE_LIST *tables= Lex->query_tables;
             Lex->type|= REFRESH_READ_LOCK;
-            /* We acquire an X lock currently and then downgrade. */
             for (; tables; tables= tables->next_global)
-              tables->mdl_request.set_type(MDL_EXCLUSIVE);
+              tables->mdl_request.set_type(MDL_SHARED_NO_WRITE);
           }
         ;
 
@@ -13967,6 +14040,7 @@ view_tail:
                                                    TL_IGNORE,
                                                    MDL_EXCLUSIVE))
               MYSQL_YYABORT;
+            lex->query_tables->open_strategy= TABLE_LIST::OPEN_STUB;
           }
           view_list_opt AS view_select
         ;
diff --git a/sql/sys_vars.cc b/sql/sys_vars.cc
index 9294c7b89a4..ca3447dcc82 100644
--- a/sql/sys_vars.cc
+++ b/sql/sys_vars.cc
@@ -145,7 +145,7 @@ static Sys_var_ulong Sys_pfs_max_mutex_instances(
        "performance_schema_max_mutex_instances",
        "Maximum number of instrumented MUTEX objects.",
        READ_ONLY GLOBAL_VAR(pfs_param.m_mutex_sizing),
-       CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 1024*1024),
+       CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 100*1024*1024),
        DEFAULT(PFS_MAX_MUTEX),
        BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES);
 
@@ -161,7 +161,7 @@ static Sys_var_ulong Sys_pfs_max_rwlock_instances(
        "performance_schema_max_rwlock_instances",
        "Maximum number of instrumented RWLOCK objects.",
        READ_ONLY GLOBAL_VAR(pfs_param.m_rwlock_sizing),
-       CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 1024*1024),
+       CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 100*1024*1024),
        DEFAULT(PFS_MAX_RWLOCK),
        BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES);
 
@@ -1492,7 +1492,8 @@ static bool fix_read_only(sys_var *self, THD *thd, enum_var_type type)
     can cause to wait on a read lock, it's required for the client application
     to unlock everything, and acceptable for the server to wait on all locks.
   */
-  if ((result= close_cached_tables(thd, NULL, FALSE, TRUE)))
+  if ((result= close_cached_tables(thd, NULL, TRUE,
+                                   thd->variables.lock_wait_timeout)))
     goto end_with_read_lock;
 
   if ((result= thd->global_read_lock.make_global_read_lock_block_commit(thd)))
@@ -1616,14 +1617,17 @@ static Sys_var_charptr Sys_socket(
        READ_ONLY GLOBAL_VAR(mysqld_unix_port), CMD_LINE(REQUIRED_ARG),
        IN_FS_CHARSET, DEFAULT(0));
 
-#ifdef HAVE_THR_SETCONCURRENCY
+/* 
+  thread_concurrency is a no-op on all platforms since
+  MySQL 5.1.  It will be removed in the context of
+  WL#5265
+*/
 static Sys_var_ulong Sys_thread_concurrency(
        "thread_concurrency",
        "Permits the application to give the threads system a hint for "
        "the desired number of threads that should be run at the same time",
        READ_ONLY GLOBAL_VAR(concurrency), CMD_LINE(REQUIRED_ARG),
        VALID_RANGE(1, 512), DEFAULT(DEFAULT_CONCURRENCY), BLOCK_SIZE(1));
-#endif
 
 static Sys_var_ulong Sys_thread_stack(
        "thread_stack", "The stack size for each thread",
diff --git a/sql/table.cc b/sql/table.cc
index bcdfd23b4c1..f08a0aa84ca 100644
--- a/sql/table.cc
+++ b/sql/table.cc
@@ -34,6 +34,7 @@
 #include <m_ctype.h>
 #include "my_md5.h"
 #include "sql_select.h"
+#include "mdl.h"                 // MDL_wait_for_graph_visitor
 
 /* INFORMATION_SCHEMA name */
 LEX_STRING INFORMATION_SCHEMA_NAME= {C_STRING_WITH_LEN("information_schema")};
@@ -325,6 +326,7 @@ TABLE_SHARE *alloc_table_share(TABLE_LIST *table_list, char *key,
 
     share->used_tables.empty();
     share->free_tables.empty();
+    share->m_flush_tickets.empty();
 
     memcpy((char*) &share->mem_root, (char*) &mem_root, sizeof(mem_root));
     mysql_mutex_init(key_TABLE_SHARE_LOCK_ha_data,
@@ -389,52 +391,92 @@ void init_tmp_table_share(THD *thd, TABLE_SHARE *share, const char *key,
 
   share->used_tables.empty();
   share->free_tables.empty();
+  share->m_flush_tickets.empty();
 
   DBUG_VOID_RETURN;
 }
 
 
+/**
+  Release resources (plugins) used by the share and free its memory.
+  TABLE_SHARE is self-contained -- it's stored in its own MEM_ROOT.
+  Free this MEM_ROOT.
+*/
+
+void TABLE_SHARE::destroy()
+{
+  uint idx;
+  KEY *info_it;
+
+  /* The mutex is initialized only for shares that are part of the TDC */
+  if (tmp_table == NO_TMP_TABLE)
+    mysql_mutex_destroy(&LOCK_ha_data);
+  my_hash_free(&name_hash);
+
+  plugin_unlock(NULL, db_plugin);
+  db_plugin= NULL;
+
+  /* Release fulltext parsers */
+  info_it= key_info;
+  for (idx= keys; idx; idx--, info_it++)
+  {
+    if (info_it->flags & HA_USES_PARSER)
+    {
+      plugin_unlock(NULL, info_it->parser);
+      info_it->flags= 0;
+    }
+  }
+  /*
+    Make a copy since the share is allocated in its own root,
+    and free_root() updates its argument after freeing the memory.
+  */
+  MEM_ROOT own_root= mem_root;
+  free_root(&own_root, MYF(0));
+}
+
 /*
   Free table share and memory used by it
 
   SYNOPSIS
     free_table_share()
     share		Table share
-
-  NOTES
-    share->mutex must be locked when we come here if it's not a temp table
 */
 
 void free_table_share(TABLE_SHARE *share)
 {
-  MEM_ROOT mem_root;
-  uint idx;
-  KEY *key_info;
   DBUG_ENTER("free_table_share");
   DBUG_PRINT("enter", ("table: %s.%s", share->db.str, share->table_name.str));
   DBUG_ASSERT(share->ref_count == 0);
 
-  /* The mutex is initialized only for shares that are part of the TDC */
-  if (share->tmp_table == NO_TMP_TABLE)
-    mysql_mutex_destroy(&share->LOCK_ha_data);
-  my_hash_free(&share->name_hash);
-
-  plugin_unlock(NULL, share->db_plugin);
-  share->db_plugin= NULL;
-
-  /* Release fulltext parsers */
-  key_info= share->key_info;
-  for (idx= share->keys; idx; idx--, key_info++)
+  if (share->m_flush_tickets.is_empty())
   {
-    if (key_info->flags & HA_USES_PARSER)
-    {
-      plugin_unlock(NULL, key_info->parser);
-      key_info->flags= 0;
-    }
+    /*
+      No threads are waiting for this share to be flushed (the
+      share is not old, is for a temporary table, or just nobody
+      happens to be waiting for it). Destroy it.
+    */
+    share->destroy();
+  }
+  else
+  {
+    Wait_for_flush_list::Iterator it(share->m_flush_tickets);
+    Wait_for_flush *ticket;
+    /*
+      We're about to iterate over a list that is used
+      concurrently. Make sure this never happens without a lock.
+    */
+    mysql_mutex_assert_owner(&LOCK_open);
+
+    while ((ticket= it++))
+      (void) ticket->get_ctx()->m_wait.set_status(MDL_wait::GRANTED);
+    /*
+      If there are threads waiting for this share to be flushed,
+      the last one to receive the notification will destroy the
+      share. At this point the share is removed from the table
+      definition cache, so is OK to proceed here without waiting
+      for this thread to do the work.
+    */
   }
-  /* We must copy mem_root from share because share is allocated through it */
-  memcpy((char*) &mem_root, (char*) &share->mem_root, sizeof(mem_root));
-  free_root(&mem_root, MYF(0));                 // Free's share
   DBUG_VOID_RETURN;
 }
 
@@ -2995,6 +3037,192 @@ Table_check_intact::check(TABLE *table, const TABLE_FIELD_DEF *table_def)
 }
 
 
+/**
+  Traverse portion of wait-for graph which is reachable through edge
+  represented by this flush ticket in search for deadlocks.
+
+  @retval TRUE  A deadlock is found. A victim is remembered
+                by the visitor.
+  @retval FALSE Success, no deadlocks.
+*/
+
+bool Wait_for_flush::accept_visitor(MDL_wait_for_graph_visitor *gvisitor)
+{
+  return m_share->visit_subgraph(this, gvisitor);
+}
+
+
+uint Wait_for_flush::get_deadlock_weight() const
+{
+  return m_deadlock_weight;
+}
+
+
+/**
+  Traverse portion of wait-for graph which is reachable through this
+  table share in search for deadlocks.
+
+  @param waiting_ticket  Ticket representing wait for this share.
+  @param dvisitor        Deadlock detection visitor.
+
+  @retval TRUE  A deadlock is found. A victim is remembered
+                by the visitor.
+  @retval FALSE No deadlocks, it's OK to begin wait.
+*/
+
+bool TABLE_SHARE::visit_subgraph(Wait_for_flush *wait_for_flush,
+                                 MDL_wait_for_graph_visitor *gvisitor)
+{
+  TABLE *table;
+  MDL_context *src_ctx= wait_for_flush->get_ctx();
+  bool result= TRUE;
+
+  /*
+    To protect used_tables list from being concurrently modified
+    while we are iterating through it we acquire LOCK_open.
+    This does not introduce deadlocks in the deadlock detector
+    because we won't try to acquire LOCK_open while
+    holding a write-lock on MDL_lock::m_rwlock.
+  */
+  if (gvisitor->m_lock_open_count++ == 0)
+    mysql_mutex_lock(&LOCK_open);
+
+  I_P_List_iterator <TABLE, TABLE_share> tables_it(used_tables);
+
+  /*
+    In case of multiple searches running in parallel, avoid going
+    over the same loop twice and shortcut the search.
+    Do it after taking the lock to weed out unnecessary races.
+  */
+  if (src_ctx->m_wait.get_status() != MDL_wait::EMPTY)
+  {
+    result= FALSE;
+    goto end;
+  }
+
+  if (gvisitor->enter_node(src_ctx))
+    goto end;
+
+  while ((table= tables_it++))
+  {
+    if (gvisitor->inspect_edge(&table->in_use->mdl_context))
+    {
+      goto end_leave_node;
+    }
+  }
+
+  tables_it.rewind();
+  while ((table= tables_it++))
+  {
+    if (table->in_use->mdl_context.visit_subgraph(gvisitor))
+    {
+      goto end_leave_node;
+    }
+  }
+
+  result= FALSE;
+
+end_leave_node:
+  gvisitor->leave_node(src_ctx);
+
+end:
+  if (gvisitor->m_lock_open_count-- == 1)
+    mysql_mutex_unlock(&LOCK_open);
+
+  return result;
+}
+
+
+/**
+  Wait until the subject share is removed from the table
+  definition cache and make sure it's destroyed.
+
+  @param mdl_context     MDL context for thread which is going to wait.
+  @param abstime         Timeout for waiting as absolute time value.
+  @param deadlock_weight Weight of this wait for deadlock detector.
+
+  @pre LOCK_open is write locked, the share is used (has
+       non-zero reference count), is marked for flush and
+       this connection does not reference the share.
+       LOCK_open will be unlocked temporarily during execution.
+
+  @retval FALSE - Success.
+  @retval TRUE  - Error (OOM, deadlock, timeout, etc...).
+*/
+
+bool TABLE_SHARE::wait_for_old_version(THD *thd, struct timespec *abstime,
+                                       uint deadlock_weight)
+{
+  MDL_context *mdl_context= &thd->mdl_context;
+  Wait_for_flush ticket(mdl_context, this, deadlock_weight);
+  MDL_wait::enum_wait_status wait_status;
+
+  mysql_mutex_assert_owner(&LOCK_open);
+  /*
+    We should enter this method only when share's version is not
+    up to date and the share is referenced. Otherwise our
+    thread will never be woken up from wait.
+  */
+  DBUG_ASSERT(version != refresh_version && ref_count != 0);
+
+  m_flush_tickets.push_front(&ticket);
+
+  mdl_context->m_wait.reset_status();
+
+  mysql_mutex_unlock(&LOCK_open);
+
+  mdl_context->will_wait_for(&ticket);
+
+  mdl_context->find_deadlock();
+
+  wait_status= mdl_context->m_wait.timed_wait(thd, abstime, TRUE,
+                                              "Waiting for table flush");
+
+  mdl_context->done_waiting_for();
+
+  mysql_mutex_lock(&LOCK_open);
+
+  m_flush_tickets.remove(&ticket);
+
+  if (m_flush_tickets.is_empty() && ref_count == 0)
+  {
+    /*
+      If our thread was the last one using the share,
+      we must destroy it here.
+    */
+    destroy();
+  }
+
+  /*
+    In cases when our wait was aborted by KILL statement,
+    a deadlock or a timeout, the share might still be referenced,
+    so we don't delete it. Note, that we can't determine this
+    condition by checking wait_status alone, since, for example,
+    a timeout can happen after all references to the table share
+    were released, but before the share is removed from the
+    cache and we receive the notification. This is why
+    we first destroy the share, and then look at
+    wait_status.
+  */
+  switch (wait_status)
+  {
+  case MDL_wait::GRANTED:
+    return FALSE;
+  case MDL_wait::VICTIM:
+    my_error(ER_LOCK_DEADLOCK, MYF(0));
+    return TRUE;
+  case MDL_wait::TIMEOUT:
+    my_error(ER_LOCK_WAIT_TIMEOUT, MYF(0));
+    return TRUE;
+  case MDL_wait::KILLED:
+    return TRUE;
+  default:
+    DBUG_ASSERT(0);
+    return TRUE;
+  }
+}
+
+
 /*
   Create Item_field for each column in the table.
 
diff --git a/sql/table.h b/sql/table.h
index 7579a8a6df3..45b9aa3e699 100644
--- a/sql/table.h
+++ b/sql/table.h
@@ -43,7 +43,6 @@ class Security_context;
 struct TABLE_LIST;
 class ACL_internal_schema_access;
 class ACL_internal_table_access;
-struct TABLE_LIST;
 class Field;
 
 /*
@@ -205,7 +204,6 @@ typedef struct st_order {
   struct st_order *next;
   Item	 **item;			/* Point at item in select fields */
   Item	 *item_ptr;			/* Storage for initial item */
-  Item   **item_copy;			/* For SPs; the original item ptr */
   int    counter;                       /* position in SELECT list, correct
                                            only if counter_used is true*/
   bool	 asc;				/* true if ascending */
@@ -508,7 +506,46 @@ public:
 };
 
 
-/*
+/**
+  Class representing the fact that some thread waits for table
+  share to be flushed. Is used to represent information about
+  such waits in MDL deadlock detector.
+*/
+
+class Wait_for_flush : public MDL_wait_for_subgraph
+{
+  MDL_context *m_ctx;
+  TABLE_SHARE *m_share;
+  uint m_deadlock_weight;
+public:
+  Wait_for_flush(MDL_context *ctx_arg, TABLE_SHARE *share_arg,
+               uint deadlock_weight_arg)
+    : m_ctx(ctx_arg), m_share(share_arg),
+      m_deadlock_weight(deadlock_weight_arg)
+  {}
+
+  MDL_context *get_ctx() const { return m_ctx; }
+
+  virtual bool accept_visitor(MDL_wait_for_graph_visitor *dvisitor);
+
+  virtual uint get_deadlock_weight() const;
+
+  /**
+    Pointers for participating in the list of waiters for table share.
+  */
+  Wait_for_flush *next_in_share;
+  Wait_for_flush **prev_in_share;
+};
+
+
+typedef I_P_List <Wait_for_flush,
+                  I_P_List_adapter<Wait_for_flush,
+                                   &Wait_for_flush::next_in_share,
+                                   &Wait_for_flush::prev_in_share> >
+                 Wait_for_flush_list;
+
+
+/**
   This structure is shared between different table objects. There is one
   instance of table share per one table in the database.
 */
@@ -662,6 +699,11 @@ struct TABLE_SHARE
   /** Instrumentation for this table share. */
   PSI_table_share *m_psi;
 
+  /**
+    List of tickets representing threads waiting for the share to be flushed.
+  */
+  Wait_for_flush_list m_flush_tickets;
+
   /*
     Set share's table cache key and update its db and table name appropriately.
 
@@ -731,10 +773,8 @@ struct TABLE_SHARE
   }
 
 
-  /*
-    Must all TABLEs be reopened?
-  */
-  inline bool needs_reopen() const
+  /** Is this table share being expelled from the table definition cache?  */
+  inline bool has_old_version() const
   {
     return version != refresh_version;
   }
@@ -837,6 +877,13 @@ struct TABLE_SHARE
     return (tmp_table == SYSTEM_TMP_TABLE || is_view) ? 0 : table_map_id;
   }
 
+  bool visit_subgraph(Wait_for_flush *waiting_ticket,
+                      MDL_wait_for_graph_visitor *gvisitor);
+
+  bool wait_for_old_version(THD *thd, struct timespec *abstime,
+                            uint deadlock_weight);
+  /** Release resources and free memory occupied by the table share. */
+  void destroy();
 };
 
 
@@ -1084,9 +1131,7 @@ public:
     read_set= &def_read_set;
     write_set= &def_write_set;
   }
-  /*
-    Is this instance of the table should be reopen?
-  */
+  /** Should this instance of the table be reopened? */
   inline bool needs_reopen()
   { return !db_stat || m_needs_reopen; }
 
@@ -1588,23 +1633,6 @@ struct TABLE_LIST
     /* Don't associate a table share. */
     OPEN_STUB
   } open_strategy;
-  /**
-    Indicates the locking strategy for the object being opened.
-  */
-  enum
-  {
-    /*
-      Take metadata lock specified by 'mdl_request' member before
-      the object is opened. Do nothing after that.
-    */
-    OTLS_NONE= 0,
-    /*
-      Take (exclusive) metadata lock specified by 'mdl_request' member
-      before object is opened. If opening is successful, downgrade to
-      a shared lock.
-    */
-    OTLS_DOWNGRADE_IF_EXISTS
-  } lock_strategy;
   /* For transactional locking. */
   int           lock_timeout;           /* NOWAIT or WAIT [X]               */
   bool          lock_transactional;     /* If transactional lock requested. */