BUG#19010: Fix issues with that ALTER TABLE from auto-partitioned NDB table doesn't work unless primary key exists on table.

mysql-test/r/ndb_bitfield.result:
  Test cases changes now that auto-partitioning is remembered in frm file
mysql-test/r/ndb_dd_basic.result:
  Test cases changes now that auto-partitioning is remembered in frm file
mysql-test/r/ndb_dd_disk2memory.result:
  Test cases changes now that auto-partitioning is remembered in frm file
mysql-test/r/ndb_gis.result:
  Test cases changes now that auto-partitioning is remembered in frm file
mysql-test/r/ndb_partition_key.result:
  New test cases for auto-partitioning change that was made to fix bug
mysql-test/r/rpl_ndb_UUID.result:
  Test cases changes now that auto-partitioning is remembered in frm file
mysql-test/r/rpl_ndb_dd_advance.result:
  Test cases changes now that auto-partitioning is remembered in frm file
mysql-test/t/ndb_partition_key.test:
  New test cases for auto-partitioning change that was made to fix bug
sql/partition_info.h:
  New boolean to keep track of auto partitioned or not
sql/sql_partition.cc:
  Ensure that auto-partitiong flag is reset when partitions are dropped, added, reorganised or coalesced.
  Ensure that auto-partitioned tables are altered into non-partitioned table when ALTER TABLE t1 engine=X
  is performed.
sql/sql_show.cc:
  Only print partition info for non-auto-partitioned tables
sql/sql_table.cc:
  Set auto partition flag when auto partitions are generated in create table
sql/table.cc:
  Fix reading of frm file where new auto-partition flag is introduced.
sql/table.h:
  New flag for auto partition on share object
sql/unireg.cc:
  Fix code for writing frm to also write autopartition flag at end of partition info, fix some length issues
  at the same time that was in this part that caused no problems since partition info always was the last info
  in the file.

15 files changed, 125 insertions, 23 deletions

diff --git a/mysql-test/r/ndb_bitfield.result b/mysql-test/r/ndb_bitfield.result
index 9a8c571cfba..59c4d420b22 100644
--- a/mysql-test/r/ndb_bitfield.result
+++ b/mysql-test/r/ndb_bitfield.result
@@ -9,7 +9,7 @@ t1	CREATE TABLE `t1` (
   `pk1` int(11) NOT NULL,
   `b` bit(64) DEFAULT NULL,
   PRIMARY KEY (`pk1`)
-) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
 insert into t1 values 
 (0,b'1111111111111111111111111111111111111111111111111111111111111111'),
 (1,b'1000000000000000000000000000000000000000000000000000000000000000'),
diff --git a/mysql-test/r/ndb_dd_basic.result b/mysql-test/r/ndb_dd_basic.result
index d5ac5071a8e..99d5dd62717 100644
--- a/mysql-test/r/ndb_dd_basic.result
+++ b/mysql-test/r/ndb_dd_basic.result
@@ -49,7 +49,7 @@ t1	CREATE TABLE `t1` (
   `b` int(11) NOT NULL,
   `c` int(11) NOT NULL,
   PRIMARY KEY (`pk1`)
-) TABLESPACE ts1 STORAGE DISK ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) TABLESPACE ts1 STORAGE DISK ENGINE=ndbcluster DEFAULT CHARSET=latin1
 INSERT INTO t1 VALUES (0, 0, 0);
 SELECT * FROM t1;
 pk1	b	c
diff --git a/mysql-test/r/ndb_dd_disk2memory.result b/mysql-test/r/ndb_dd_disk2memory.result
index 80056b7269d..bd5bbda42f3 100644
--- a/mysql-test/r/ndb_dd_disk2memory.result
+++ b/mysql-test/r/ndb_dd_disk2memory.result
@@ -218,7 +218,7 @@ t2	CREATE TABLE `t2` (
   `b2` int(11) NOT NULL,
   `c2` int(11) NOT NULL,
   PRIMARY KEY (`pk2`)
-) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
 SHOW CREATE TABLE test.t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
@@ -226,7 +226,7 @@ t1	CREATE TABLE `t1` (
   `b` int(11) NOT NULL,
   `c` int(11) NOT NULL,
   PRIMARY KEY (`pk1`)
-) TABLESPACE table_space1 STORAGE DISK ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) TABLESPACE table_space1 STORAGE DISK ENGINE=ndbcluster DEFAULT CHARSET=latin1
 ALTER TABLE test.t2 TABLESPACE table_space1 STORAGE DISK
 ENGINE=NDB;
 SHOW CREATE TABLE test.t2;
@@ -236,7 +236,7 @@ t2	CREATE TABLE `t2` (
   `b2` int(11) NOT NULL,
   `c2` int(11) NOT NULL,
   PRIMARY KEY (`pk2`)
-) TABLESPACE table_space1 STORAGE DISK ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) TABLESPACE table_space1 STORAGE DISK ENGINE=ndbcluster DEFAULT CHARSET=latin1
 ALTER TABLE test.t1 ENGINE=NDBCLUSTER;
 SHOW CREATE TABLE test.t1;
 Table	Create Table
@@ -245,7 +245,7 @@ t1	CREATE TABLE `t1` (
   `b` int(11) NOT NULL,
   `c` int(11) NOT NULL,
   PRIMARY KEY (`pk1`)
-) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
 
 DROP TABLE test.t1;
 DROP TABLE test.t2;
diff --git a/mysql-test/r/ndb_gis.result b/mysql-test/r/ndb_gis.result
index f9b9ceb76a5..67447a69242 100644
--- a/mysql-test/r/ndb_gis.result
+++ b/mysql-test/r/ndb_gis.result
@@ -14,7 +14,7 @@ gis_point	CREATE TABLE `gis_point` (
   `fid` int(11) NOT NULL AUTO_INCREMENT,
   `g` point DEFAULT NULL,
   PRIMARY KEY (`fid`)
-) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
 SHOW FIELDS FROM gis_point;
 Field	Type	Null	Key	Default	Extra
 fid	int(11)	NO	PRI	NULL	auto_increment
@@ -476,7 +476,7 @@ gis_point	CREATE TABLE `gis_point` (
   `fid` int(11) NOT NULL AUTO_INCREMENT,
   `g` point DEFAULT NULL,
   PRIMARY KEY (`fid`)
-) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
 SHOW FIELDS FROM gis_point;
 Field	Type	Null	Key	Default	Extra
 fid	int(11)	NO	PRI	NULL	auto_increment
diff --git a/mysql-test/r/ndb_partition_key.result b/mysql-test/r/ndb_partition_key.result
index 503283df532..b7bf64d8724 100644
--- a/mysql-test/r/ndb_partition_key.result
+++ b/mysql-test/r/ndb_partition_key.result
@@ -137,7 +137,7 @@ show create table t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
   `a` int(11) DEFAULT NULL
-) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
 alter table t1
 partition by key(a)
 (partition p0 engine=ndb, partition p1);
@@ -197,3 +197,40 @@ ENGINE=NDB
 PARTITION BY KEY(c3);
 ALTER TABLE t1 ADD COLUMN c4 INT AFTER c1;
 DROP TABLE t1;
+create table t1 (a int) engine = ndb;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `a` int(11) DEFAULT NULL
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
+alter table t1 add column b int;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `a` int(11) DEFAULT NULL,
+  `b` int(11) DEFAULT NULL
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
+alter table t1 engine = myisam;
+alter table t1 engine = ndb;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `a` int(11) DEFAULT NULL,
+  `b` int(11) DEFAULT NULL
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
+alter table t1 coalesce partition 1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `a` int(11) DEFAULT NULL,
+  `b` int(11) DEFAULT NULL
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () PARTITIONS 1 
+drop table t1 ;
+create table t1 (a int) engine = ndb;
+alter table t1 add partition partitions 1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `a` int(11) DEFAULT NULL
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () PARTITIONS 3 
+drop table t1;
diff --git a/mysql-test/r/rpl_ndb_UUID.result b/mysql-test/r/rpl_ndb_UUID.result
index c768779c49b..422379d4f55 100644
--- a/mysql-test/r/rpl_ndb_UUID.result
+++ b/mysql-test/r/rpl_ndb_UUID.result
@@ -33,7 +33,7 @@ t1	CREATE TABLE `t1` (
   `blob_column` longblob,
   `vchar_column` varchar(100) DEFAULT NULL,
   PRIMARY KEY (`a`)
-) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
 DROP PROCEDURE test.p1;
 DROP FUNCTION test.fn1;
 DROP TABLE test.t1;
diff --git a/mysql-test/r/rpl_ndb_dd_advance.result b/mysql-test/r/rpl_ndb_dd_advance.result
index ba89592b532..2cb1cce649b 100644
--- a/mysql-test/r/rpl_ndb_dd_advance.result
+++ b/mysql-test/r/rpl_ndb_dd_advance.result
@@ -69,7 +69,7 @@ t1	CREATE TABLE `t1` (
   PRIMARY KEY (`c1`),
   KEY `t1_i` (`c2`,`c3`),
   KEY `c5` (`c5`)
-) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
 **** Show first set of ALTERs on SLAVE ****
 SHOW CREATE TABLE t1;
 Table	Create Table
@@ -82,7 +82,7 @@ t1	CREATE TABLE `t1` (
   PRIMARY KEY (`c1`),
   KEY `t1_i` (`c2`,`c3`),
   KEY `c5` (`c5`)
-) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
 **** Second set of alters test 1 ****
 ALTER TABLE t1 RENAME t2;
 ALTER TABLE t2 DROP INDEX c5;
@@ -101,7 +101,7 @@ t1	CREATE TABLE `t1` (
   `c5` double DEFAULT NULL,
   PRIMARY KEY (`c1`),
   KEY `t1_i` (`c2`,`c3`)
-) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
 **** Show second set of ALTERs on SLAVE ****
 SHOW CREATE TABLE t1;
 Table	Create Table
@@ -113,7 +113,7 @@ t1	CREATE TABLE `t1` (
   `c5` double DEFAULT NULL,
   PRIMARY KEY (`c1`),
   KEY `t1_i` (`c2`,`c3`)
-) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
 **** Third and last set of alters for test1  ****
 ALTER TABLE t1 CHANGE c1 c1 DOUBLE;
 ALTER TABLE t1 CHANGE c2 c2 DECIMAL(10,2);
@@ -135,7 +135,7 @@ t1	CREATE TABLE `t1` (
   `c5` double DEFAULT NULL,
   PRIMARY KEY (`c1`),
   KEY `t1_i` (`c2`)
-) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
 SELECT * FROM t1 ORDER BY c1 LIMIT 5;
 c1	c2	c3	c5
 1	2.00	b1b1b1b1b1b1b1b1b1b1	NULL
@@ -153,7 +153,7 @@ t1	CREATE TABLE `t1` (
   `c5` double DEFAULT NULL,
   PRIMARY KEY (`c1`),
   KEY `t1_i` (`c2`)
-) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
 SELECT * FROM t1 where c1 = 1;
 c1	c2	c3	c5
 1	2.00	b1b1b1b1b1b1b1b1b1b1	NULL
diff --git a/mysql-test/t/ndb_partition_key.test b/mysql-test/t/ndb_partition_key.test
index ce939663ab8..9309dc7b36f 100644
--- a/mysql-test/t/ndb_partition_key.test
+++ b/mysql-test/t/ndb_partition_key.test
@@ -196,3 +196,23 @@ CREATE TABLE t1 (
 
 ALTER TABLE t1 ADD COLUMN c4 INT AFTER c1;
 DROP TABLE t1;
+
+#
+# BUG 19010: ALTER TABLE from NDB to other engine without primary key
+#            doesn't work.
+#
+create table t1 (a int) engine = ndb;
+show create table t1;
+alter table t1 add column b int;
+show create table t1;
+alter table t1 engine = myisam;
+alter table t1 engine = ndb;
+show create table t1;
+alter table t1 coalesce partition 1;
+show create table t1;
+drop table t1 ;
+create table t1 (a int) engine = ndb;
+alter table t1 add partition partitions 1;
+show create table t1;
+drop table t1;
+
diff --git a/sql/partition_info.h b/sql/partition_info.h
index 3a1e6be4050..af43f7b7933 100644
--- a/sql/partition_info.h
+++ b/sql/partition_info.h
@@ -184,6 +184,7 @@ public:
   bool list_of_subpart_fields;
   bool linear_hash_ind;
   bool fixed;
+  bool is_auto_partitioned;
   bool from_openfrm;
   bool has_null_value;
   uint has_null_part_id;
@@ -219,6 +220,7 @@ public:
     list_of_part_fields(FALSE), list_of_subpart_fields(FALSE),
     linear_hash_ind(FALSE),
     fixed(FALSE),
+    is_auto_partitioned(FALSE),
     from_openfrm(FALSE),
     has_null_value(FALSE),
     has_null_part_id(0)
diff --git a/sql/sql_partition.cc b/sql/sql_partition.cc
index 0442ad724d2..cc580578c7e 100644
--- a/sql/sql_partition.cc
+++ b/sql/sql_partition.cc
@@ -4075,6 +4075,7 @@ that are reorganised.
           tab_part_info->use_default_partitions= FALSE;
         }
         tab_part_info->use_default_no_partitions= FALSE;
+        tab_part_info->is_auto_partitioned= FALSE;
       }
     }
     else if (alter_info->flags == ALTER_DROP_PARTITION)
@@ -4090,6 +4091,8 @@ that are reorganised.
       uint no_parts_dropped= alter_info->partition_names.elements;
       uint no_parts_found= 0;
       List_iterator<partition_element> part_it(tab_part_info->partitions);
+
+      tab_part_info->is_auto_partitioned= FALSE;
       if (!(tab_part_info->part_type == RANGE_PARTITION ||
             tab_part_info->part_type == LIST_PARTITION))
       {
@@ -4274,7 +4277,10 @@ state of p1.
         tab_part_info->no_parts= no_parts_remain;
       }
       if (!(alter_info->flags & ALTER_TABLE_REORG))
+      {
         tab_part_info->use_default_no_partitions= FALSE;
+        tab_part_info->is_auto_partitioned= FALSE;
+      }
     }
     else if (alter_info->flags == ALTER_REORGANIZE_PARTITION)
     {
@@ -4293,6 +4299,8 @@ state of p1.
       uint no_parts_new= thd->work_part_info->partitions.elements;
       partition_info *alt_part_info= thd->work_part_info;
       uint check_total_partitions;
+
+      tab_part_info->is_auto_partitioned= FALSE;
       if (no_parts_reorged > tab_part_info->no_parts)
       {
         my_error(ER_REORG_PARTITION_NOT_EXIST, MYF(0));
@@ -4533,7 +4541,22 @@ the generated partition syntax in a correct manner.
             Make sure change of engine happens to all partitions.
           */
           DBUG_PRINT("info", ("partition changed"));
-          set_engine_all_partitions(thd->work_part_info, create_info->db_type);
+          if (table->part_info->is_auto_partitioned)
+          {
+            /*
+              If the user originally didn't specify partitioning to be
+              used we can remove it now.
+            */
+            thd->work_part_info= NULL;
+          }
+          else
+          {
+            /*
+              Ensure that all partitions have the proper engine set-up
+            */
+            set_engine_all_partitions(thd->work_part_info,
+                                      create_info->db_type);
+          }
           *partition_changed= TRUE;
         }
       }
diff --git a/sql/sql_show.cc b/sql/sql_show.cc
index 5e54040f0ae..b23b53d117e 100644
--- a/sql/sql_show.cc
+++ b/sql/sql_show.cc
@@ -1274,6 +1274,7 @@ store_create_info(THD *thd, TABLE_LIST *table_list, String *packet,
     uint part_syntax_len;
     char *part_syntax;
     if (table->part_info &&
+        (!table->part_info->is_auto_partitioned) &&
         ((part_syntax= generate_partition_syntax(table->part_info,
                                                   &part_syntax_len,
                                                   FALSE,FALSE))))
diff --git a/sql/sql_table.cc b/sql/sql_table.cc
index 412682fc3b0..4b8bf7bcf17 100644
--- a/sql/sql_table.cc
+++ b/sql/sql_table.cc
@@ -3045,6 +3045,7 @@ bool mysql_create_table_internal(THD *thd,
     }
     file->set_auto_partitions(part_info);
     part_info->default_engine_type= create_info->db_type;
+    part_info->is_auto_partitioned= TRUE;
   }
   if (part_info)
   {
diff --git a/sql/table.cc b/sql/table.cc
index 6ba66569f5c..8227287df0f 100644
--- a/sql/table.cc
+++ b/sql/table.cc
@@ -655,7 +655,6 @@ static int open_binary_frm(THD *thd, TABLE_SHARE *share, uchar *head,
           my_free(buff, MYF(0));
           goto err;
         }
-	next_chunk++;
       }
 #else
       if (partition_info_len)
@@ -679,7 +678,15 @@ static int open_binary_frm(THD *thd, TABLE_SHARE *share, uchar *head,
       */
       next_chunk+= 4;
     }
+    else if (share->mysql_version >= 50110)
 #endif
+    {
+      /* New auto_partitioned indicator introduced in 5.1.11 */
+#ifdef WITH_PARTITION_STORAGE_ENGINE
+      share->auto_partitioned= *next_chunk;
+#endif
+      next_chunk++;
+    }
     keyinfo= share->key_info;
     for (i= 0; i < keys; i++, keyinfo++)
     {
@@ -1469,6 +1476,8 @@ int open_table_from_share(THD *thd, TABLE_SHARE *share, const char *alias,
       Fix the partition functions and ensure they are not constant
       functions
     */
+    outparam->part_info->is_auto_partitioned= share->auto_partitioned;
+    DBUG_PRINT("info", ("autopartitioned = %u", share->auto_partitioned));
     if (fix_partition_func(thd, share->normalized_path.str, outparam,
                            is_create_table))
       goto err;
diff --git a/sql/table.h b/sql/table.h
index 85d49444b29..e1b496a8296 100644
--- a/sql/table.h
+++ b/sql/table.h
@@ -213,6 +213,7 @@ typedef struct st_table_share
   */
   bool log_table;
 #ifdef WITH_PARTITION_STORAGE_ENGINE
+  bool auto_partitioned;
   const uchar *partition_info;
   uint  partition_info_len;
   const uchar *part_state;
diff --git a/sql/unireg.cc b/sql/unireg.cc
index bbb4d970d37..58c8123c98e 100644
--- a/sql/unireg.cc
+++ b/sql/unireg.cc
@@ -130,8 +130,14 @@ bool mysql_create_frm(THD *thd, const char *file_name,
   /* str_db_type */
   create_info->extra_size= (2 + str_db_type.length +
                             2 + create_info->connect_string.length);
-  /* Partition */
-  create_info->extra_size+= 9;
+  /*
+    Partition:
+      Length of partition info = 4 byte
+      Potential NULL byte at end of partition info string = 1 byte
+      Indicator if auto-partitioned table = 1 byte
+      => Total 6 byte
+  */
+  create_info->extra_size+= 6;
 #ifdef WITH_PARTITION_STORAGE_ENGINE
   if (part_info)
   {
@@ -203,17 +209,19 @@ bool mysql_create_frm(THD *thd, const char *file_name,
 #ifdef WITH_PARTITION_STORAGE_ENGINE
   if (part_info)
   {
+    char auto_partitioned= part_info->is_auto_partitioned ? 1 : 0;
     int4store(buff, part_info->part_info_len);
     if (my_write(file, (const byte*)buff, 4, MYF_RW) ||
         my_write(file, (const byte*)part_info->part_info_string,
-                 part_info->part_info_len + 1, MYF_RW))
+                 part_info->part_info_len + 1, MYF_RW) ||
+        my_write(file, (const byte*)&auto_partitioned, 1, MYF_RW))
       goto err;
   }
   else
 #endif
   {
-    bzero(buff, 9);
-    if (my_write(file, (byte*) buff, 9, MYF_RW))
+    bzero(buff, 6);
+    if (my_write(file, (byte*) buff, 6, MYF_RW))
       goto err;
   }
   for (i= 0; i < keys; i++)