merge

39 files changed, 515 insertions, 114 deletions

diff --git a/client/mysqltest.cc b/client/mysqltest.cc
index cb2a5af6446..b99541b7907 100644
--- a/client/mysqltest.cc
+++ b/client/mysqltest.cc
@@ -72,6 +72,10 @@
 #define QUERY_SEND_FLAG  1
 #define QUERY_REAP_FLAG  2
 
+#ifndef HAVE_SETENV
+#error implement our portable setenv replacement in mysys
+#endif
+
 enum {
   OPT_SKIP_SAFEMALLOC=OPT_MAX_CLIENT_OPTION,
   OPT_PS_PROTOCOL, OPT_SP_PROTOCOL, OPT_CURSOR_PROTOCOL, OPT_VIEW_PROTOCOL,
@@ -214,7 +218,6 @@ typedef struct
   int alloced_len;
   int int_dirty; /* do not update string if int is updated until first read */
   int alloced;
-  char *env_s;
 } VAR;
 
 /*Perl/shell-like variable registers */
@@ -1922,13 +1925,20 @@ VAR *var_init(VAR *v, const char *name, int name_len, const char *val,
                                                   + name_len+1, MYF(MY_WME))))
     die("Out of memory");
 
-  tmp_var->name = (name) ? (char*) tmp_var + sizeof(*tmp_var) : 0;
+  if (name != NULL)
+  {
+    tmp_var->name= reinterpret_cast<char*>(tmp_var) + sizeof(*tmp_var);
+    memcpy(tmp_var->name, name, name_len);
+    tmp_var->name[name_len]= 0;
+  }
+  else
+    tmp_var->name= NULL;
+
   tmp_var->alloced = (v == 0);
 
   if (!(tmp_var->str_val = (char*)my_malloc(val_alloc_len+1, MYF(MY_WME))))
     die("Out of memory");
 
-  memcpy(tmp_var->name, name, name_len);
   if (val)
   {
     memcpy(tmp_var->str_val, val, val_len);
@@ -1939,7 +1949,6 @@ VAR *var_init(VAR *v, const char *name, int name_len, const char *val,
   tmp_var->alloced_len = val_alloc_len;
   tmp_var->int_val = (val) ? atoi(val) : 0;
   tmp_var->int_dirty = 0;
-  tmp_var->env_s = 0;
   return tmp_var;
 }
 
@@ -2067,20 +2076,15 @@ void var_set(const char *var_name, const char *var_name_end,
 
   if (env_var)
   {
-    char buf[1024], *old_env_s= v->env_s;
     if (v->int_dirty)
     {
       sprintf(v->str_val, "%d", v->int_val);
       v->int_dirty= 0;
       v->str_val_len= strlen(v->str_val);
     }
-    my_snprintf(buf, sizeof(buf), "%.*s=%.*s",
-                v->name_len, v->name,
-                v->str_val_len, v->str_val);
-    if (!(v->env_s= my_strdup(buf, MYF(MY_WME))))
-      die("Out of memory");
-    putenv(v->env_s);
-    my_free(old_env_s, MYF(MY_ALLOW_ZERO_PTR));
+    /* setenv() expects \0-terminated strings */
+    DBUG_ASSERT(v->name[v->name_len] == 0);
+    setenv(v->name, v->str_val, 1);
   }
   DBUG_VOID_RETURN;
 }
diff --git a/config.h.cmake b/config.h.cmake
index 452525da24e..1c6317e2611 100644
--- a/config.h.cmake
+++ b/config.h.cmake
@@ -533,6 +533,11 @@
 #cmakedefine strtok_r @strtok_r@
 #cmakedefine strtoll @strtoll@
 #cmakedefine strtoull @strtoull@
+#ifdef _WIN32
+#define HAVE_SETENV
+#define setenv(a,b,c) _putenv_s(a,b)
+#endif
+
 
 
 
diff --git a/include/config-win.h b/include/config-win.h
index f8d51165bc2..5d64261076d 100644
--- a/include/config-win.h
+++ b/include/config-win.h
@@ -318,9 +318,12 @@ inline ulonglong double2ulonglong(double d)
 #define strcasecmp stricmp
 #define strncasecmp strnicmp
 
-#define HAVE_SNPRINTF		/* Gave link error */
+#define HAVE_SNPRINTF 1
 #define snprintf _snprintf
 
+#define HAVE_SETENV 1
+#define setenv(VAR,VAL,X)       _putenv_s(VAR,VAL)
+
 #ifdef _MSC_VER
 #define HAVE_LDIV		/* The optimizer breaks in zortech for ldiv */
 #define HAVE_ANSI_INCLUDE
diff --git a/libmysqld/CMakeLists.txt b/libmysqld/CMakeLists.txt
index 2ea08902405..9f753593a14 100644
--- a/libmysqld/CMakeLists.txt
+++ b/libmysqld/CMakeLists.txt
@@ -44,7 +44,7 @@ SET(SQL_EMBEDDED_SOURCES emb_qcache.cc libmysqld.c lib_sql.cc
            ../sql-common/my_user.c ../sql-common/pack.c
            ../sql/password.c ../sql/discover.cc ../sql/derror.cc 
            ../sql/field.cc ../sql/field_conv.cc
-           ../sql/filesort.cc ../sql/gstream.cc ../sql/ha_partition.cc 
+           ../sql/filesort.cc ../sql/gstream.cc
            ../sql/handler.cc ../sql/hash_filo.cc ../sql/hostname.cc 
            ../sql/init.cc ../sql/item_buff.cc ../sql/item_cmpfunc.cc 
            ../sql/item.cc ../sql/item_create.cc ../sql/item_func.cc 
diff --git a/libmysqld/Makefile.am b/libmysqld/Makefile.am
index c3e3086b446..2dde00ad38a 100644
--- a/libmysqld/Makefile.am
+++ b/libmysqld/Makefile.am
@@ -155,8 +155,8 @@ libmysqld.a:	libmysqld_int.a $(INC_LIB) $(libmysqld_a_DEPENDENCIES) $(storageobj
 if DARWIN_MWCC
 	mwld -lib -o $@ libmysqld_int.a `echo $(INC_LIB) | sort -u` $(storageobjects)
 else
-		-rm -f libmysqld.a
-		if test "$(host_os)" = "netware" ; \
+	-rm -f libmysqld.a
+	if test "$(host_os)" = "netware" ; \
 		then \
 		  $(libmysqld_a_AR) libmysqld.a $(INC_LIB) libmysqld_int.a $(storageobjects); \
 		else \
diff --git a/mysql-test/include/mysqld--help.inc b/mysql-test/include/mysqld--help.inc
index ad5272c095e..e40e2a62a74 100644
--- a/mysql-test/include/mysqld--help.inc
+++ b/mysql-test/include/mysqld--help.inc
@@ -11,7 +11,8 @@ exec $MYSQLD_BOOTSTRAP_CMD --symbolic-links=0 --lower-case-table-names=1 --help
 
 perl;
   @skipvars=qw/basedir open-files-limit general-log-file log plugin-dir
-               log-slow-queries pid-file slow-query-log-file/;
+               log-slow-queries pid-file slow-query-log-file
+			   datadir slave-load-tmpdir tmpdir/;
   @plugins=qw/innodb ndb archive blackhole federated partition ndbcluster safemalloc debug temp-pool ssl des-key-file
               thread-concurrency super-large-pages mutex-deadlock-detector/;
   @env=qw/MYSQLTEST_VARDIR MYSQL_TEST_DIR MYSQL_LIBDIR MYSQL_CHARSETSDIR MYSQL_SHAREDIR /;
diff --git a/mysql-test/lib/v1/mysql-test-run.pl b/mysql-test/lib/v1/mysql-test-run.pl
index 9ae3208fc24..4202334a244 100755
--- a/mysql-test/lib/v1/mysql-test-run.pl
+++ b/mysql-test/lib/v1/mysql-test-run.pl
@@ -3911,7 +3911,7 @@ sub mysqld_arguments ($$$$) {
 
   if ( $opt_valgrind_mysqld )
   {
-    mtr_add_arg($args, "%s--skip-safemalloc", $prefix);
+    mtr_add_arg($args, "%s--loose-skip-safemalloc", $prefix);
 
     if ( $mysql_version_id < 50100 )
     {
@@ -5208,7 +5208,6 @@ sub valgrind_arguments {
   else
   {
     mtr_add_arg($args, "--tool=memcheck"); # From >= 2.1.2 needs this option
-    mtr_add_arg($args, "--alignment=8");
     mtr_add_arg($args, "--leak-check=yes");
     mtr_add_arg($args, "--num-callers=16");
     mtr_add_arg($args, "--suppressions=%s/valgrind.supp", $glob_mysql_test_dir)
diff --git a/mysql-test/r/events_scheduling.result b/mysql-test/r/events_scheduling.result
index 7dfd10a53f8..262caea3d7f 100644
--- a/mysql-test/r/events_scheduling.result
+++ b/mysql-test/r/events_scheduling.result
@@ -82,5 +82,24 @@ DROP TABLE table_1;
 DROP TABLE table_2;
 DROP TABLE table_3;
 DROP TABLE table_4;
+
+Bug #50087 Interval arithmetic for Event_queue_element is not portable.
+
+CREATE TABLE t1(a int);
+CREATE EVENT e1 ON SCHEDULE EVERY 1 MONTH
+STARTS NOW() - INTERVAL 1 MONTH
+ENDS NOW() + INTERVAL 2 MONTH
+ON COMPLETION PRESERVE
+DO
+INSERT INTO t1 VALUES (1);
+CREATE EVENT e2 ON SCHEDULE EVERY 1 MONTH
+STARTS NOW()
+ENDS NOW() + INTERVAL 11 MONTH
+ON COMPLETION PRESERVE
+DO
+INSERT INTO t1 VALUES (1);
+DROP TABLE t1;
+DROP EVENT e1;
+DROP EVENT e2;
 DROP DATABASE events_test;
 SET GLOBAL event_scheduler=@event_scheduler;
diff --git a/mysql-test/r/index_merge_myisam.result b/mysql-test/r/index_merge_myisam.result
index 922f7241102..1be96da5c7d 100644
--- a/mysql-test/r/index_merge_myisam.result
+++ b/mysql-test/r/index_merge_myisam.result
@@ -1419,19 +1419,19 @@ drop table t1;
 #
 select @@optimizer_switch;
 @@optimizer_switch
-index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on
+index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on
 set optimizer_switch='index_merge=off,index_merge_union=off';
 select @@optimizer_switch;
 @@optimizer_switch
-index_merge=off,index_merge_union=off,index_merge_sort_union=on,index_merge_intersection=on
+index_merge=off,index_merge_union=off,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on
 set optimizer_switch='index_merge_union=on';
 select @@optimizer_switch;
 @@optimizer_switch
-index_merge=off,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on
+index_merge=off,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on
 set optimizer_switch='default,index_merge_sort_union=off';
 select @@optimizer_switch;
 @@optimizer_switch
-index_merge=on,index_merge_union=on,index_merge_sort_union=off,index_merge_intersection=on
+index_merge=on,index_merge_union=on,index_merge_sort_union=off,index_merge_intersection=on,engine_condition_pushdown=on
 set optimizer_switch=4;
 set optimizer_switch=NULL;
 ERROR 42000: Variable 'optimizer_switch' can't be set to the value of 'NULL'
@@ -1457,21 +1457,21 @@ set optimizer_switch=default;
 set optimizer_switch='index_merge=off,index_merge_union=off,default';
 select @@optimizer_switch;
 @@optimizer_switch
-index_merge=off,index_merge_union=off,index_merge_sort_union=on,index_merge_intersection=on
+index_merge=off,index_merge_union=off,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on
 set optimizer_switch=default;
 select @@global.optimizer_switch;
 @@global.optimizer_switch
-index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on
+index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on
 set @@global.optimizer_switch=default;
 select @@global.optimizer_switch;
 @@global.optimizer_switch
-index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on
+index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on
 #
 # Check index_merge's @@optimizer_switch flags
 #
 select @@optimizer_switch;
 @@optimizer_switch
-index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on
+index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on
 create table t0 (a int);
 insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
 create table t1 (a int, b int, c int, filler char(100), 
@@ -1581,5 +1581,5 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 set optimizer_switch=default;
 show variables like 'optimizer_switch';
 Variable_name	Value
-optimizer_switch	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on
+optimizer_switch	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on
 drop table t0, t1;
diff --git a/mysql-test/r/mysqld--help-win.result b/mysql-test/r/mysqld--help-win.result
index d37548b40b6..e2e41127efa 100644
--- a/mysql-test/r/mysqld--help-win.result
+++ b/mysql-test/r/mysqld--help-win.result
@@ -128,7 +128,8 @@ The following options may be given as the first argument:
  on that value
  --enable-locking    Deprecated option, use --external-locking instead.
  --engine-condition-pushdown 
- Push supported query conditions to the storage engine
+ Push supported query conditions to the storage engine.
+ Deprecated, use --optimizer-switch instead.
  (Defaults to on; use --skip-engine-condition-pushdown to disable.)
  --event-scheduler[=name] 
  Enable the event scheduler. Possible values are ON, OFF,
@@ -407,8 +408,9 @@ The following options may be given as the first argument:
  --optimizer-switch=name 
  optimizer_switch=option=val[,option=val...], where option
  is one of {index_merge, index_merge_union,
- index_merge_sort_union, index_merge_intersection} and val
- is one of {on, off, default}
+ index_merge_sort_union, index_merge_intersection,
+ engine_condition_pushdown} and val is one of {on, off,
+ default}
  --pid-file=name     Pid file used by safe_mysqld
  --plugin-dir=name   Directory for plugins
  --plugin-load=name  Optional semicolon-separated list of plugins to load,
@@ -734,7 +736,6 @@ completion-type NO_CHAIN
 concurrent-insert AUTO
 connect-timeout 10
 console FALSE
-datadir MYSQLTEST_VARDIR/install.db/
 date-format %Y-%m-%d
 datetime-format %Y-%m-%d %H:%i:%s
 default-character-set latin1
@@ -844,7 +845,7 @@ old-passwords FALSE
 old-style-user-limits FALSE
 optimizer-prune-level 1
 optimizer-search-depth 62
-optimizer-switch index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on
+optimizer-switch index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on
 plugin-load (No default value)
 port 3306
 port-open-timeout 0
@@ -887,7 +888,6 @@ skip-show-database FALSE
 skip-slave-start FALSE
 slave-compressed-protocol FALSE
 slave-exec-mode STRICT
-slave-load-tmpdir MYSQLTEST_VARDIR/tmp/
 slave-net-timeout 3600
 slave-skip-errors (No default value)
 slave-transaction-retries 10
@@ -915,7 +915,6 @@ thread-stack 262144
 time-format %H:%i:%s
 timed-mutexes FALSE
 tmp-table-size 16777216
-tmpdir MYSQLTEST_VARDIR/tmp/
 transaction-alloc-block-size 8192
 transaction-isolation REPEATABLE-READ
 transaction-prealloc-size 4096
diff --git a/mysql-test/r/optimizer_switch_eng_cond_pushdown1.result b/mysql-test/r/optimizer_switch_eng_cond_pushdown1.result
new file mode 100644
index 00000000000..a8313ec246c
--- /dev/null
+++ b/mysql-test/r/optimizer_switch_eng_cond_pushdown1.result
@@ -0,0 +1,5 @@
+select @@session.engine_condition_pushdown,
+@@global.engine_condition_pushdown,
+@@session.optimizer_switch, @@global.optimizer_switch;
+@@session.engine_condition_pushdown	@@global.engine_condition_pushdown	@@session.optimizer_switch	@@global.optimizer_switch
+1	1	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on
diff --git a/mysql-test/r/optimizer_switch_eng_cond_pushdown2.result b/mysql-test/r/optimizer_switch_eng_cond_pushdown2.result
new file mode 100644
index 00000000000..d7e84c57f42
--- /dev/null
+++ b/mysql-test/r/optimizer_switch_eng_cond_pushdown2.result
@@ -0,0 +1,5 @@
+select @@session.engine_condition_pushdown,
+@@global.engine_condition_pushdown,
+@@session.optimizer_switch, @@global.optimizer_switch;
+@@session.engine_condition_pushdown	@@global.engine_condition_pushdown	@@session.optimizer_switch	@@global.optimizer_switch
+0	0	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=off	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=off
diff --git a/mysql-test/r/subselect3.result b/mysql-test/r/subselect3.result
index 3a0576768b2..a51cef6833d 100644
--- a/mysql-test/r/subselect3.result
+++ b/mysql-test/r/subselect3.result
@@ -964,3 +964,53 @@ Variable_name	Value
 Handler_read_rnd_next	18
 DROP TABLE t1,t2;
 End of 5.1 tests
+#
+# BUG#48920: COUNT DISTINCT returns 1 for NULL values when in a subquery 
+#            in the select list
+#
+
+CREATE TABLE t1 (
+i int(11) DEFAULT NULL,
+v varchar(1) DEFAULT NULL
+);
+
+INSERT INTO t1 VALUES (8,'v');
+INSERT INTO t1 VALUES (9,'r');
+INSERT INTO t1 VALUES (NULL,'y');
+
+CREATE TABLE t2 (
+i int(11) DEFAULT NULL,
+v varchar(1) DEFAULT NULL,
+KEY i_key (i)
+);
+
+INSERT INTO t2 VALUES (NULL,'r');
+INSERT INTO t2 VALUES (0,'c');
+INSERT INTO t2 VALUES (0,'o');
+INSERT INTO t2 VALUES (2,'v');
+INSERT INTO t2 VALUES (7,'c');
+
+SELECT i, v, (SELECT COUNT(DISTINCT i)
+FROM t1
+WHERE v  = t2.v) as subsel
+FROM t2;
+i	v	subsel
+NULL	r	1
+0	c	0
+0	o	0
+2	v	1
+7	c	0
+
+EXPLAIN EXTENDED
+SELECT i, v, (SELECT COUNT(DISTINCT i)
+FROM t1
+WHERE v  = t2.v) as subsel
+FROM t2;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	5	100.00	
+2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
+Warnings:
+Note	1276	Field or reference 'test.t2.v' of SELECT #2 was resolved in SELECT #1
+Note	1003	select `test`.`t2`.`i` AS `i`,`test`.`t2`.`v` AS `v`,(select count(distinct `test`.`t1`.`i`) AS `COUNT(DISTINCT i)` from `test`.`t1` where (`test`.`t1`.`v` = `test`.`t2`.`v`)) AS `subsel` from `test`.`t2`
+DROP TABLE t1,t2;
+End of 5.6 tests
diff --git a/mysql-test/suite/ndb/r/ndb_condition_pushdown.result b/mysql-test/suite/ndb/r/ndb_condition_pushdown.result
index 4b6f5031fb2..f2b5b882f10 100644
--- a/mysql-test/suite/ndb/r/ndb_condition_pushdown.result
+++ b/mysql-test/suite/ndb/r/ndb_condition_pushdown.result
@@ -51,8 +51,8 @@ CREATE TABLE  t3 (pk1 int unsigned NOT NULL PRIMARY KEY,   attr1 int unsigned NO
 insert into t3 values (0,0,0,0,"a"),(1,1,9223372036854775803,1,"b"),(2,2,9223372036854775804,2,"c"),(3,3,9223372036854775805,3,"d"),(4,4,9223372036854775806,4,"e"),(5,5,9223372036854775807,5,"f");
 CREATE TABLE  t4 (pk1 int unsigned NOT NULL PRIMARY KEY,   attr1 int unsigned NOT NULL,   attr2 bigint unsigned, attr3 tinyint unsigned,  attr4 VARCHAR(10) , KEY (attr1)) ENGINE=ndbcluster;
 insert into t4 values (0,0,0,0,"a"),(1,1,9223372036854775803,1,"b"),(2,2,9223372036854775804,2,"c"),(3,3,9223372036854775805,3,"d"),(4,4,9223372036854775806,4,"e"),(5,5,9223372036854775807,5,"f");
-set @old_ecpd = @@session.engine_condition_pushdown;
-set engine_condition_pushdown = off;
+set @old_optimizer_switch = @@session.optimizer_switch;
+set optimizer_switch = "engine_condition_pushdown=off";
 select auto from t1 where 
 string = "aaaa" and 
 vstring = "aaaa" and 
@@ -484,7 +484,7 @@ pk1	attr1	attr2	attr3	attr4	pk1	attr1	attr2	attr3	attr4
 2	2	9223372036854775804	2	c	2	2	9223372036854775804	2	c
 3	3	9223372036854775805	3	d	3	3	9223372036854775805	3	d
 4	4	9223372036854775806	4	e	4	4	9223372036854775806	4	e
-set engine_condition_pushdown = on;
+set optimizer_switch = "engine_condition_pushdown=on";
 explain
 select auto from t1 where 
 string = "aaaa" and 
@@ -1769,12 +1769,12 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 create table t5 (a int primary key auto_increment, b tinytext not null) 
 engine = ndb;
 insert into t5 (b) values ('jonas'), ('jensing'), ('johan');
-set engine_condition_pushdown = off;
+set optimizer_switch = "engine_condition_pushdown=off";
 select * from t5 where b like '%jo%' order by a;
 a	b
 1	jonas
 3	johan
-set engine_condition_pushdown = on;
+set optimizer_switch = "engine_condition_pushdown=on";
 explain select * from t5 where b like '%jo%';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t5	ALL	NULL	NULL	NULL	NULL	#	Using where
@@ -1782,7 +1782,7 @@ select * from t5 where b like '%jo%' order by a;
 a	b
 1	jonas
 3	johan
-set engine_condition_pushdown = off;
+set optimizer_switch = "engine_condition_pushdown=off";
 select auto from t1 where date_time like '1902-02-02 %' order by auto;
 auto
 2
@@ -1790,7 +1790,7 @@ select auto from t1 where date_time not like '1902-02-02 %' order by auto;
 auto
 3
 4
-set engine_condition_pushdown = on;
+set optimizer_switch = "engine_condition_pushdown=on";
 explain select auto from t1 where date_time like '1902-02-02 %';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	#	Using where
@@ -1808,7 +1808,7 @@ drop table t1;
 create table t1 (a int, b varchar(3), primary key using hash(a))
 engine=ndb;
 insert into t1 values (1,'a'), (2,'ab'), (3,'abc');
-set engine_condition_pushdown = off;
+set optimizer_switch = "engine_condition_pushdown=off";
 select * from t1 where b like 'ab';
 a	b
 2	ab
@@ -1821,7 +1821,7 @@ a	b
 select * from t1 where b like 'abc' or b like 'abc';
 a	b
 3	abc
-set engine_condition_pushdown = on;
+set optimizer_switch = "engine_condition_pushdown=on";
 select * from t1 where b like 'ab';
 a	b
 2	ab
@@ -1838,7 +1838,7 @@ drop table t1;
 create table t1 (a int, b char(3), primary key using hash(a))
 engine=ndb;
 insert into t1 values (1,'a'), (2,'ab'), (3,'abc');
-set engine_condition_pushdown = off;
+set optimizer_switch = "engine_condition_pushdown=off";
 select * from t1 where b like 'ab';
 a	b
 2	ab
@@ -1851,7 +1851,7 @@ a	b
 select * from t1 where b like 'abc' or b like 'abc';
 a	b
 3	abc
-set engine_condition_pushdown = on;
+set optimizer_switch = "engine_condition_pushdown=on";
 select * from t1 where b like 'ab';
 a	b
 2	ab
@@ -1868,11 +1868,11 @@ drop table t1;
 create table  t1 ( fname varchar(255), lname varchar(255) )
 engine=ndbcluster;
 insert into t1 values ("Young","Foo");
-set engine_condition_pushdown = 0;
+set optimizer_switch = "engine_condition_pushdown=off";
 SELECT fname, lname FROM t1 WHERE (fname like 'Y%') or (lname like 'F%');
 fname	lname
 Young	Foo
-set engine_condition_pushdown = 1;
+set optimizer_switch = "engine_condition_pushdown=on";
 SELECT fname, lname FROM t1 WHERE (fname like 'Y%') or (lname like 'F%');
 fname	lname
 Young	Foo
@@ -1880,11 +1880,11 @@ insert into t1 values ("aaa", "aaa");
 insert into t1 values ("bbb", "bbb");
 insert into t1 values ("ccc", "ccc");
 insert into t1 values ("ddd", "ddd");
-set engine_condition_pushdown = 0;
+set optimizer_switch = "engine_condition_pushdown=off";
 SELECT fname, lname FROM t1 WHERE (fname like 'Y%') or (lname like 'F%');
 fname	lname
 Young	Foo
-set engine_condition_pushdown = 1;
+set optimizer_switch = "engine_condition_pushdown=on";
 SELECT fname, lname FROM t1 WHERE (fname like 'Y%') or (lname like 'F%');
 fname	lname
 Young	Foo
@@ -1896,7 +1896,7 @@ insert into t1 values (20,2,200,0+0x2222);
 insert into t1 values (30,3,300,0+0x3333);
 insert into t1 values (40,4,400,0+0x4444);
 insert into t1 values (50,5,500,0+0x5555);
-set engine_condition_pushdown = on;
+set optimizer_switch = "engine_condition_pushdown=on";
 select a,b,d from t1
 where b in (0,1,2,5)
 order by b;
@@ -1916,5 +1916,5 @@ a	b	d
 50	5	21845
 Warnings:
 Warning	4294	Scan filter is too large, discarded
-set engine_condition_pushdown = @old_ecpd;
+set optimizer_switch = @old_optimizer_switch;
 DROP TABLE t1,t2,t3,t4,t5;
diff --git a/mysql-test/suite/ndb/r/ndb_gis.result b/mysql-test/suite/ndb/r/ndb_gis.result
index 54772f596c3..76a53804d8f 100644
--- a/mysql-test/suite/ndb/r/ndb_gis.result
+++ b/mysql-test/suite/ndb/r/ndb_gis.result
@@ -548,7 +548,7 @@ Overlaps(@horiz1, @point2)
 0
 DROP TABLE t1;
 End of 5.0 tests
-set engine_condition_pushdown = on;
+set optimizer_switch = "engine_condition_pushdown=on";
 DROP TABLE IF EXISTS t1, gis_point, gis_line, gis_polygon, gis_multi_point, gis_multi_line, gis_multi_polygon, gis_geometrycollection, gis_geometry;
 CREATE TABLE gis_point  (fid INTEGER PRIMARY KEY AUTO_INCREMENT, g POINT);
 CREATE TABLE gis_line  (fid INTEGER PRIMARY KEY AUTO_INCREMENT, g LINESTRING);
diff --git a/mysql-test/suite/ndb/r/ndb_index_unique.result b/mysql-test/suite/ndb/r/ndb_index_unique.result
index 1fe02d4b5c7..5d0f4038211 100644
--- a/mysql-test/suite/ndb/r/ndb_index_unique.result
+++ b/mysql-test/suite/ndb/r/ndb_index_unique.result
@@ -181,8 +181,8 @@ a	b	c
 5	5	NULL
 8	3	NULL
 9	3	NULL
-set @old_ecpd = @@session.engine_condition_pushdown;
-set engine_condition_pushdown = true;
+set @old_optimizer_switch = @@session.optimizer_switch;
+set optimizer_switch = "engine_condition_pushdown=on";
 explain select * from t2 where (b = 3 OR b = 5) AND c IS NULL AND a < 9 order by a;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t2	range	PRIMARY,b	PRIMARY	4	NULL	1	Using where with pushed condition
@@ -191,7 +191,7 @@ a	b	c
 3	3	NULL
 5	5	NULL
 8	3	NULL
-set engine_condition_pushdown = @old_ecpd;
+set optimizer_switch = @old_optimizer_switch;
 drop table t2;
 CREATE TABLE t3 (
 a int unsigned NOT NULL,
diff --git a/mysql-test/suite/ndb/t/ndb_condition_pushdown.test b/mysql-test/suite/ndb/t/ndb_condition_pushdown.test
index a56c9dda01c..a6ab06eae31 100644
--- a/mysql-test/suite/ndb/t/ndb_condition_pushdown.test
+++ b/mysql-test/suite/ndb/t/ndb_condition_pushdown.test
@@ -68,8 +68,8 @@ CREATE TABLE  t4 (pk1 int unsigned NOT NULL PRIMARY KEY,   attr1 int unsigned NO
 
 insert into t4 values (0,0,0,0,"a"),(1,1,9223372036854775803,1,"b"),(2,2,9223372036854775804,2,"c"),(3,3,9223372036854775805,3,"d"),(4,4,9223372036854775806,4,"e"),(5,5,9223372036854775807,5,"f");
 
-set @old_ecpd = @@session.engine_condition_pushdown;
-set engine_condition_pushdown = off;
+set @old_optimizer_switch = @@session.optimizer_switch;
+set optimizer_switch = "engine_condition_pushdown=off";
 
 # Test all types and compare operators
 select auto from t1 where 
@@ -453,7 +453,7 @@ select * from t2,t3 where t2.attr1 < 1 and t2.attr2 = t3.attr2 and t3.attr1 < 5
 select * from t4 where attr1 < 5 and attr2 > 9223372036854775803 and attr3 != 3 order by t4.pk1;
 select * from t3,t4 where t4.attr1 > 1 and t4.attr2 = t3.attr2 and t4.attr3 < 5 order by t4.pk1;
 
-set engine_condition_pushdown = on;
+set optimizer_switch = "engine_condition_pushdown=on";
 
 # Test all types and compare operators
 --replace_column 9 #
@@ -1674,18 +1674,18 @@ select * from t3 left join t4 on t4.attr2 = t3.attr2 where t4.attr1 > 1 and t4.a
 create table t5 (a int primary key auto_increment, b tinytext not null) 
 engine = ndb;
 insert into t5 (b) values ('jonas'), ('jensing'), ('johan');
-set engine_condition_pushdown = off;
+set optimizer_switch = "engine_condition_pushdown=off";
 select * from t5 where b like '%jo%' order by a;
-set engine_condition_pushdown = on;
+set optimizer_switch = "engine_condition_pushdown=on";
 --replace_column 9 #
 explain select * from t5 where b like '%jo%';
 select * from t5 where b like '%jo%' order by a;
 
 # bug#21056  	ndb pushdown equal/setValue error on datetime
-set engine_condition_pushdown = off;
+set optimizer_switch = "engine_condition_pushdown=off";
 select auto from t1 where date_time like '1902-02-02 %' order by auto;
 select auto from t1 where date_time not like '1902-02-02 %' order by auto;
-set engine_condition_pushdown = on;
+set optimizer_switch = "engine_condition_pushdown=on";
 --replace_column 9 #
 explain select auto from t1 where date_time like '1902-02-02 %';
 select auto from t1 where date_time like '1902-02-02 %' order by auto;
@@ -1701,12 +1701,12 @@ insert into t1 values (1,'a'), (2,'ab'), (3,'abc');
 # in TUP the constants 'ab' 'abc' were expected in varchar format
 # "like" returned error which became "false"
 # scan filter negates "or" which exposes the bug
-set engine_condition_pushdown = off;
+set optimizer_switch = "engine_condition_pushdown=off";
 select * from t1 where b like 'ab';
 select * from t1 where b like 'ab' or b like 'ab';
 select * from t1 where b like 'abc';
 select * from t1 where b like 'abc' or b like 'abc';
-set engine_condition_pushdown = on;
+set optimizer_switch = "engine_condition_pushdown=on";
 select * from t1 where b like 'ab';
 select * from t1 where b like 'ab' or b like 'ab';
 select * from t1 where b like 'abc';
@@ -1719,12 +1719,12 @@ engine=ndb;
 insert into t1 values (1,'a'), (2,'ab'), (3,'abc');
 # test that incorrect MySQL behaviour is preserved
 # 'ab ' LIKE 'ab' is true in MySQL
-set engine_condition_pushdown = off;
+set optimizer_switch = "engine_condition_pushdown=off";
 select * from t1 where b like 'ab';
 select * from t1 where b like 'ab' or b like 'ab';
 select * from t1 where b like 'abc';
 select * from t1 where b like 'abc' or b like 'abc';
-set engine_condition_pushdown = on;
+set optimizer_switch = "engine_condition_pushdown=on";
 select * from t1 where b like 'ab';
 select * from t1 where b like 'ab' or b like 'ab';
 select * from t1 where b like 'abc';
@@ -1736,9 +1736,9 @@ create table  t1 ( fname varchar(255), lname varchar(255) )
 engine=ndbcluster;
 insert into t1 values ("Young","Foo");
 
-set engine_condition_pushdown = 0;
+set optimizer_switch = "engine_condition_pushdown=off";
 SELECT fname, lname FROM t1 WHERE (fname like 'Y%') or (lname like 'F%');
-set engine_condition_pushdown = 1;
+set optimizer_switch = "engine_condition_pushdown=on";
 SELECT fname, lname FROM t1 WHERE (fname like 'Y%') or (lname like 'F%');
 
 # make sure optimizer does not do some crazy shortcut
@@ -1747,9 +1747,9 @@ insert into t1 values ("bbb", "bbb");
 insert into t1 values ("ccc", "ccc");
 insert into t1 values ("ddd", "ddd");
 
-set engine_condition_pushdown = 0;
+set optimizer_switch = "engine_condition_pushdown=off";
 SELECT fname, lname FROM t1 WHERE (fname like 'Y%') or (lname like 'F%');
-set engine_condition_pushdown = 1;
+set optimizer_switch = "engine_condition_pushdown=on";
 SELECT fname, lname FROM t1 WHERE (fname like 'Y%') or (lname like 'F%');
 
 # bug#29390 (scan filter is too large, discarded)
@@ -1766,7 +1766,7 @@ insert into t1 values (30,3,300,0+0x3333);
 insert into t1 values (40,4,400,0+0x4444);
 insert into t1 values (50,5,500,0+0x5555);
 
-set engine_condition_pushdown = on;
+set optimizer_switch = "engine_condition_pushdown=on";
 
 select a,b,d from t1
     where b in (0,1,2,5)
@@ -2050,5 +2050,5 @@ select a,b,d from t1
     order by b;
 --enable_query_log
 
-set engine_condition_pushdown = @old_ecpd;
+set optimizer_switch = @old_optimizer_switch;
 DROP TABLE t1,t2,t3,t4,t5;
diff --git a/mysql-test/suite/ndb/t/ndb_gis.test b/mysql-test/suite/ndb/t/ndb_gis.test
index e14f462c32d..babff535f94 100644
--- a/mysql-test/suite/ndb/t/ndb_gis.test
+++ b/mysql-test/suite/ndb/t/ndb_gis.test
@@ -1,5 +1,5 @@
 --source include/have_ndb.inc
 SET storage_engine=ndbcluster;
 --source include/gis_generic.inc
-set engine_condition_pushdown = on;
+set optimizer_switch = "engine_condition_pushdown=on";
 --source include/gis_generic.inc
diff --git a/mysql-test/suite/ndb/t/ndb_index_unique.test b/mysql-test/suite/ndb/t/ndb_index_unique.test
index 78757c3bcf7..9178ace1ad0 100644
--- a/mysql-test/suite/ndb/t/ndb_index_unique.test
+++ b/mysql-test/suite/ndb/t/ndb_index_unique.test
@@ -112,11 +112,11 @@ insert t2 values(1,1,NULL),(2,2,2),(3,3,NULL),(4,4,4),(5,5,NULL),(6,6,6),(7,7,NU
 select * from t2 where c IS NULL order by a;
 select * from t2 where b = 3 AND c IS NULL order by a;
 select * from t2 where (b = 3 OR b = 5) AND c IS NULL order by a;
-set @old_ecpd = @@session.engine_condition_pushdown;
-set engine_condition_pushdown = true;
+set @old_optimizer_switch = @@session.optimizer_switch;
+set optimizer_switch = "engine_condition_pushdown=on";
 explain select * from t2 where (b = 3 OR b = 5) AND c IS NULL AND a < 9 order by a;
 select * from t2 where (b = 3 OR b = 5) AND c IS NULL AND a < 9 order by a;
-set engine_condition_pushdown = @old_ecpd;
+set optimizer_switch = @old_optimizer_switch;
 
 drop table t2;
 
diff --git a/mysql-test/suite/rpl/t/disabled.def b/mysql-test/suite/rpl/t/disabled.def
index 446c233c8a9..a5017b1a02c 100644
--- a/mysql-test/suite/rpl/t/disabled.def
+++ b/mysql-test/suite/rpl/t/disabled.def
@@ -10,7 +10,5 @@
 #
 ##############################################################################
 
-rpl_get_master_version_and_clock:  # Bug#46931 2009-10-17 joro rpl.rpl_get_master_version_and_clock fails
 rpl_row_create_table            : Bug#45576 2009-12-01 joro rpl_row_create_table fails on PB2
-rpl_cross_version               : BUG#43913 2009-10-22 luis rpl_cross_version fails with symptom in described in bug report
 rpl_spec_variables		: BUG#47661 2009-10-27 jasonh rpl_spec_variables fails on PB2 hpux
diff --git a/mysql-test/suite/rpl/t/rpl_cross_version-master.opt b/mysql-test/suite/rpl/t/rpl_cross_version-master.opt
index 0ea05290c11..815a8f81d32 100644
--- a/mysql-test/suite/rpl/t/rpl_cross_version-master.opt
+++ b/mysql-test/suite/rpl/t/rpl_cross_version-master.opt
@@ -1 +1 @@
---replicate-same-server-id --relay-log=slave-relay-bin --secure-file-priv=$MYSQL_TMP_DIR
+--replicate-same-server-id --relay-log=slave-relay-bin
diff --git a/mysql-test/suite/sys_vars/r/engine_condition_pushdown_basic.result b/mysql-test/suite/sys_vars/r/engine_condition_pushdown_basic.result
index 6a8052490c4..2b0b57d5b33 100644
--- a/mysql-test/suite/sys_vars/r/engine_condition_pushdown_basic.result
+++ b/mysql-test/suite/sys_vars/r/engine_condition_pushdown_basic.result
@@ -6,19 +6,33 @@ SET @global_start_value = @@global.engine_condition_pushdown;
 SELECT @global_start_value;
 @global_start_value
 1
+select @old_session_opt_switch:=@@session.optimizer_switch,
+@old_global_opt_switch:=@@global.optimizer_switch;
+@old_session_opt_switch:=@@session.optimizer_switch	@old_global_opt_switch:=@@global.optimizer_switch
+index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on
 '#--------------------FN_DYNVARS_028_01------------------------#'
 SET @@session.engine_condition_pushdown = 0;
+Warnings:
+Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MySQL 7.0. Please use '@@optimizer_switch' instead
 SET @@session.engine_condition_pushdown = DEFAULT;
+Warnings:
+Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MySQL 7.0. Please use '@@optimizer_switch' instead
 SELECT @@session.engine_condition_pushdown;
 @@session.engine_condition_pushdown
 1
 SET @@global.engine_condition_pushdown = 0;
+Warnings:
+Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MySQL 7.0. Please use '@@optimizer_switch' instead
 SET @@global.engine_condition_pushdown = DEFAULT;
+Warnings:
+Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MySQL 7.0. Please use '@@optimizer_switch' instead
 SELECT @@global.engine_condition_pushdown;
 @@global.engine_condition_pushdown
 1
 '#---------------------FN_DYNVARS_028_02-------------------------#'
 SET engine_condition_pushdown = 1;
+Warnings:
+Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MySQL 7.0. Please use '@@optimizer_switch' instead
 SELECT @@engine_condition_pushdown;
 @@engine_condition_pushdown
 1
@@ -29,27 +43,39 @@ ERROR 42S02: Unknown table 'local' in field list
 SELECT global.engine_condition_pushdown;
 ERROR 42S02: Unknown table 'global' in field list
 SET session engine_condition_pushdown = 0;
+Warnings:
+Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MySQL 7.0. Please use '@@optimizer_switch' instead
 SELECT @@session.engine_condition_pushdown;
 @@session.engine_condition_pushdown
 0
 SET global engine_condition_pushdown = 0;
+Warnings:
+Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MySQL 7.0. Please use '@@optimizer_switch' instead
 SELECT @@global.engine_condition_pushdown;
 @@global.engine_condition_pushdown
 0
 '#--------------------FN_DYNVARS_028_03------------------------#'
 SET @@session.engine_condition_pushdown = 0;
+Warnings:
+Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MySQL 7.0. Please use '@@optimizer_switch' instead
 SELECT @@session.engine_condition_pushdown;
 @@session.engine_condition_pushdown
 0
 SET @@session.engine_condition_pushdown = 1;
+Warnings:
+Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MySQL 7.0. Please use '@@optimizer_switch' instead
 SELECT @@session.engine_condition_pushdown;
 @@session.engine_condition_pushdown
 1
 SET @@global.engine_condition_pushdown = 0;
+Warnings:
+Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MySQL 7.0. Please use '@@optimizer_switch' instead
 SELECT @@global.engine_condition_pushdown;
 @@global.engine_condition_pushdown
 0
 SET @@global.engine_condition_pushdown = 1;
+Warnings:
+Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MySQL 7.0. Please use '@@optimizer_switch' instead
 SELECT @@global.engine_condition_pushdown;
 @@global.engine_condition_pushdown
 1
@@ -88,11 +114,17 @@ SET @@global.engine_condition_pushdown = ÓFF;
 ERROR 42000: Variable 'engine_condition_pushdown' can't be set to the value of 'ÓFF'
 '#-------------------FN_DYNVARS_028_05----------------------------#'
 SET @@global.engine_condition_pushdown = 0;
+Warnings:
+Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MySQL 7.0. Please use '@@optimizer_switch' instead
 SET @@session.engine_condition_pushdown = 1;
+Warnings:
+Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MySQL 7.0. Please use '@@optimizer_switch' instead
 SELECT @@global.engine_condition_pushdown AS res_is_0;
 res_is_0
 0
 SET @@global.engine_condition_pushdown = 0;
+Warnings:
+Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MySQL 7.0. Please use '@@optimizer_switch' instead
 SELECT @@session.engine_condition_pushdown AS res_is_1;
 res_is_1
 1
@@ -126,43 +158,133 @@ VARIABLE_VALUE
 ON
 '#---------------------FN_DYNVARS_028_08-------------------------#'
 SET @@session.engine_condition_pushdown = OFF;
+Warnings:
+Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MySQL 7.0. Please use '@@optimizer_switch' instead
 SELECT @@session.engine_condition_pushdown;
 @@session.engine_condition_pushdown
 0
 SET @@session.engine_condition_pushdown = ON;
+Warnings:
+Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MySQL 7.0. Please use '@@optimizer_switch' instead
 SELECT @@session.engine_condition_pushdown;
 @@session.engine_condition_pushdown
 1
 SET @@global.engine_condition_pushdown = OFF;
+Warnings:
+Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MySQL 7.0. Please use '@@optimizer_switch' instead
 SELECT @@global.engine_condition_pushdown;
 @@global.engine_condition_pushdown
 0
 SET @@global.engine_condition_pushdown = ON;
+Warnings:
+Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MySQL 7.0. Please use '@@optimizer_switch' instead
 SELECT @@global.engine_condition_pushdown;
 @@global.engine_condition_pushdown
 1
 '#---------------------FN_DYNVARS_028_09----------------------#'
 SET @@session.engine_condition_pushdown = TRUE;
+Warnings:
+Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MySQL 7.0. Please use '@@optimizer_switch' instead
 SELECT @@session.engine_condition_pushdown;
 @@session.engine_condition_pushdown
 1
 SET @@session.engine_condition_pushdown = FALSE;
+Warnings:
+Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MySQL 7.0. Please use '@@optimizer_switch' instead
 SELECT @@session.engine_condition_pushdown;
 @@session.engine_condition_pushdown
 0
 SET @@global.engine_condition_pushdown = TRUE;
+Warnings:
+Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MySQL 7.0. Please use '@@optimizer_switch' instead
 SELECT @@global.engine_condition_pushdown;
 @@global.engine_condition_pushdown
 1
 SET @@global.engine_condition_pushdown = FALSE;
+Warnings:
+Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MySQL 7.0. Please use '@@optimizer_switch' instead
 SELECT @@global.engine_condition_pushdown;
 @@global.engine_condition_pushdown
 0
+Check that @@engine_condition_pushdown influences
+@@optimizer_switch and vice-versa
+select @@session.engine_condition_pushdown,
+@@global.engine_condition_pushdown,
+@@session.optimizer_switch, @@global.optimizer_switch;
+@@session.engine_condition_pushdown	@@global.engine_condition_pushdown	@@session.optimizer_switch	@@global.optimizer_switch
+0	0	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=off	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=off
+set @@session.engine_condition_pushdown = TRUE;
+Warnings:
+Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MySQL 7.0. Please use '@@optimizer_switch' instead
+select @@session.engine_condition_pushdown,
+@@global.engine_condition_pushdown,
+@@session.optimizer_switch, @@global.optimizer_switch;
+@@session.engine_condition_pushdown	@@global.engine_condition_pushdown	@@session.optimizer_switch	@@global.optimizer_switch
+1	0	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=off
+set @@session.engine_condition_pushdown = FALSE;
+Warnings:
+Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MySQL 7.0. Please use '@@optimizer_switch' instead
+select @@session.engine_condition_pushdown,
+@@global.engine_condition_pushdown,
+@@session.optimizer_switch, @@global.optimizer_switch;
+@@session.engine_condition_pushdown	@@global.engine_condition_pushdown	@@session.optimizer_switch	@@global.optimizer_switch
+0	0	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=off	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=off
+set @@global.engine_condition_pushdown = TRUE;
+Warnings:
+Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MySQL 7.0. Please use '@@optimizer_switch' instead
+select @@session.engine_condition_pushdown,
+@@global.engine_condition_pushdown,
+@@session.optimizer_switch, @@global.optimizer_switch;
+@@session.engine_condition_pushdown	@@global.engine_condition_pushdown	@@session.optimizer_switch	@@global.optimizer_switch
+0	1	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=off	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on
+set @@global.engine_condition_pushdown = FALSE;
+Warnings:
+Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MySQL 7.0. Please use '@@optimizer_switch' instead
+select @@session.engine_condition_pushdown,
+@@global.engine_condition_pushdown,
+@@session.optimizer_switch, @@global.optimizer_switch;
+@@session.engine_condition_pushdown	@@global.engine_condition_pushdown	@@session.optimizer_switch	@@global.optimizer_switch
+0	0	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=off	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=off
+set @@session.optimizer_switch = "engine_condition_pushdown=on";
+select @@session.engine_condition_pushdown,
+@@global.engine_condition_pushdown,
+@@session.optimizer_switch, @@global.optimizer_switch;
+@@session.engine_condition_pushdown	@@global.engine_condition_pushdown	@@session.optimizer_switch	@@global.optimizer_switch
+1	0	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=off
+set @@session.optimizer_switch = "engine_condition_pushdown=off";
+select @@session.engine_condition_pushdown,
+@@global.engine_condition_pushdown,
+@@session.optimizer_switch, @@global.optimizer_switch;
+@@session.engine_condition_pushdown	@@global.engine_condition_pushdown	@@session.optimizer_switch	@@global.optimizer_switch
+0	0	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=off	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=off
+set @@global.optimizer_switch = "engine_condition_pushdown=on";
+select @@session.engine_condition_pushdown,
+@@global.engine_condition_pushdown,
+@@session.optimizer_switch, @@global.optimizer_switch;
+@@session.engine_condition_pushdown	@@global.engine_condition_pushdown	@@session.optimizer_switch	@@global.optimizer_switch
+0	1	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=off	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on
+set @@global.optimizer_switch = "engine_condition_pushdown=off";
+select @@session.engine_condition_pushdown,
+@@global.engine_condition_pushdown,
+@@session.optimizer_switch, @@global.optimizer_switch;
+@@session.engine_condition_pushdown	@@global.engine_condition_pushdown	@@session.optimizer_switch	@@global.optimizer_switch
+0	0	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=off	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=off
 SET @@session.engine_condition_pushdown = @session_start_value;
+Warnings:
+Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MySQL 7.0. Please use '@@optimizer_switch' instead
 SELECT @@session.engine_condition_pushdown;
 @@session.engine_condition_pushdown
 1
 SET @@global.engine_condition_pushdown = @global_start_value;
+Warnings:
+Warning	1287	The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MySQL 7.0. Please use '@@optimizer_switch' instead
 SELECT @@global.engine_condition_pushdown;
 @@global.engine_condition_pushdown
 1
+set @session.optimizer_switch=@old_session_opt_switch,
+@@global.optimizer_switch=@old_global_opt_switch;
+select @@session.engine_condition_pushdown,
+@@global.engine_condition_pushdown,
+@@session.optimizer_switch, @@global.optimizer_switch;
+@@session.engine_condition_pushdown	@@global.engine_condition_pushdown	@@session.optimizer_switch	@@global.optimizer_switch
+1	1	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on
diff --git a/mysql-test/suite/sys_vars/r/optimizer_switch_basic.result b/mysql-test/suite/sys_vars/r/optimizer_switch_basic.result
index d1e03f769c8..2d648259a26 100644
--- a/mysql-test/suite/sys_vars/r/optimizer_switch_basic.result
+++ b/mysql-test/suite/sys_vars/r/optimizer_switch_basic.result
@@ -1,45 +1,45 @@
 SET @start_global_value = @@global.optimizer_switch;
 SELECT @start_global_value;
 @start_global_value
-index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on
+index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on
 select @@global.optimizer_switch;
 @@global.optimizer_switch
-index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on
+index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on
 select @@session.optimizer_switch;
 @@session.optimizer_switch
-index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on
+index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on
 show global variables like 'optimizer_switch';
 Variable_name	Value
-optimizer_switch	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on
+optimizer_switch	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on
 show session variables like 'optimizer_switch';
 Variable_name	Value
-optimizer_switch	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on
+optimizer_switch	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on
 select * from information_schema.global_variables where variable_name='optimizer_switch';
 VARIABLE_NAME	VARIABLE_VALUE
-OPTIMIZER_SWITCH	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on
+OPTIMIZER_SWITCH	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on
 select * from information_schema.session_variables where variable_name='optimizer_switch';
 VARIABLE_NAME	VARIABLE_VALUE
-OPTIMIZER_SWITCH	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on
+OPTIMIZER_SWITCH	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on
 set global optimizer_switch=10;
 select @@global.optimizer_switch;
 @@global.optimizer_switch
-index_merge=off,index_merge_union=on,index_merge_sort_union=off,index_merge_intersection=on
+index_merge=off,index_merge_union=on,index_merge_sort_union=off,index_merge_intersection=on,engine_condition_pushdown=off
 set session optimizer_switch=5;
 select @@session.optimizer_switch;
 @@session.optimizer_switch
-index_merge=on,index_merge_union=off,index_merge_sort_union=on,index_merge_intersection=off
+index_merge=on,index_merge_union=off,index_merge_sort_union=on,index_merge_intersection=off,engine_condition_pushdown=off
 set global optimizer_switch="index_merge_sort_union=on";
 select @@global.optimizer_switch;
 @@global.optimizer_switch
-index_merge=off,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on
+index_merge=off,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=off
 set session optimizer_switch="index_merge=off";
 select @@session.optimizer_switch;
 @@session.optimizer_switch
-index_merge=off,index_merge_union=off,index_merge_sort_union=on,index_merge_intersection=off
+index_merge=off,index_merge_union=off,index_merge_sort_union=on,index_merge_intersection=off,engine_condition_pushdown=off
 set session optimizer_switch="default";
 select @@session.optimizer_switch;
 @@session.optimizer_switch
-index_merge=off,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on
+index_merge=off,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=off
 set global optimizer_switch=1.1;
 ERROR 42000: Incorrect argument type to variable 'optimizer_switch'
 set global optimizer_switch=1e1;
@@ -51,4 +51,4 @@ ERROR 42000: Variable 'optimizer_switch' can't be set to the value of 'foobar'
 SET @@global.optimizer_switch = @start_global_value;
 SELECT @@global.optimizer_switch;
 @@global.optimizer_switch
-index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on
+index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on
diff --git a/mysql-test/suite/sys_vars/t/engine_condition_pushdown_basic.test b/mysql-test/suite/sys_vars/t/engine_condition_pushdown_basic.test
index b153ac50e1e..ab9bfc3dd6a 100644
--- a/mysql-test/suite/sys_vars/t/engine_condition_pushdown_basic.test
+++ b/mysql-test/suite/sys_vars/t/engine_condition_pushdown_basic.test
@@ -40,6 +40,10 @@ SELECT @session_start_value;
 SET @global_start_value = @@global.engine_condition_pushdown;
 SELECT @global_start_value;
 
+# same for optimizer_switch
+select @old_session_opt_switch:=@@session.optimizer_switch,
+@old_global_opt_switch:=@@global.optimizer_switch;
+
 --echo '#--------------------FN_DYNVARS_028_01------------------------#'
 ######################################################################## 
 #           Display the DEFAULT value of engine_condition_pushdown     #
@@ -204,6 +208,44 @@ SELECT @@global.engine_condition_pushdown;
 SET @@global.engine_condition_pushdown = FALSE;
 SELECT @@global.engine_condition_pushdown;
 
+--echo Check that @@engine_condition_pushdown influences
+--echo @@optimizer_switch and vice-versa
+select @@session.engine_condition_pushdown,
+@@global.engine_condition_pushdown,
+@@session.optimizer_switch, @@global.optimizer_switch;
+set @@session.engine_condition_pushdown = TRUE;
+select @@session.engine_condition_pushdown,
+@@global.engine_condition_pushdown,
+@@session.optimizer_switch, @@global.optimizer_switch;
+set @@session.engine_condition_pushdown = FALSE;
+select @@session.engine_condition_pushdown,
+@@global.engine_condition_pushdown,
+@@session.optimizer_switch, @@global.optimizer_switch;
+set @@global.engine_condition_pushdown = TRUE;
+select @@session.engine_condition_pushdown,
+@@global.engine_condition_pushdown,
+@@session.optimizer_switch, @@global.optimizer_switch;
+set @@global.engine_condition_pushdown = FALSE;
+select @@session.engine_condition_pushdown,
+@@global.engine_condition_pushdown,
+@@session.optimizer_switch, @@global.optimizer_switch;
+set @@session.optimizer_switch = "engine_condition_pushdown=on";
+select @@session.engine_condition_pushdown,
+@@global.engine_condition_pushdown,
+@@session.optimizer_switch, @@global.optimizer_switch;
+set @@session.optimizer_switch = "engine_condition_pushdown=off";
+select @@session.engine_condition_pushdown,
+@@global.engine_condition_pushdown,
+@@session.optimizer_switch, @@global.optimizer_switch;
+set @@global.optimizer_switch = "engine_condition_pushdown=on";
+select @@session.engine_condition_pushdown,
+@@global.engine_condition_pushdown,
+@@session.optimizer_switch, @@global.optimizer_switch;
+set @@global.optimizer_switch = "engine_condition_pushdown=off";
+select @@session.engine_condition_pushdown,
+@@global.engine_condition_pushdown,
+@@session.optimizer_switch, @@global.optimizer_switch;
+
 ##############################  
 #   Restore initial value    #
 ##############################
@@ -214,6 +256,12 @@ SELECT @@session.engine_condition_pushdown;
 SET @@global.engine_condition_pushdown = @global_start_value;
 SELECT @@global.engine_condition_pushdown;
 
+set @session.optimizer_switch=@old_session_opt_switch,
+@@global.optimizer_switch=@old_global_opt_switch;
+select @@session.engine_condition_pushdown,
+@@global.engine_condition_pushdown,
+@@session.optimizer_switch, @@global.optimizer_switch;
+
 ###############################################################
 #                    END OF engine_condition_pushdown TESTS   #
 ############################################################### 
diff --git a/mysql-test/t/events_scheduling.test b/mysql-test/t/events_scheduling.test
index 041a2def490..5f16f8bea6a 100644
--- a/mysql-test/t/events_scheduling.test
+++ b/mysql-test/t/events_scheduling.test
@@ -108,6 +108,32 @@ DROP TABLE table_1;
 DROP TABLE table_2;
 DROP TABLE table_3;
 DROP TABLE table_4;
+
+-- echo
+-- echo Bug #50087 Interval arithmetic for Event_queue_element is not portable.
+-- echo
+
+CREATE TABLE t1(a int);
+
+CREATE EVENT e1 ON SCHEDULE EVERY 1 MONTH
+STARTS NOW() - INTERVAL 1 MONTH
+ENDS NOW() + INTERVAL 2 MONTH
+ON COMPLETION PRESERVE
+DO
+  INSERT INTO t1 VALUES (1);
+
+CREATE EVENT e2 ON SCHEDULE EVERY 1 MONTH
+STARTS NOW()
+ENDS NOW() + INTERVAL 11 MONTH
+ON COMPLETION PRESERVE
+DO
+  INSERT INTO t1 VALUES (1);
+
+DROP TABLE t1;
+DROP EVENT e1;
+DROP EVENT e2;
+
+
 DROP DATABASE events_test;
 SET GLOBAL event_scheduler=@event_scheduler;
 
diff --git a/mysql-test/t/optimizer_switch_eng_cond_pushdown1-master.opt b/mysql-test/t/optimizer_switch_eng_cond_pushdown1-master.opt
new file mode 100644
index 00000000000..89aa07976ac
--- /dev/null
+++ b/mysql-test/t/optimizer_switch_eng_cond_pushdown1-master.opt
@@ -0,0 +1 @@
+--optimizer-switch=engine_condition_pushdown=off --engine-condition-pushdown=1
diff --git a/mysql-test/t/optimizer_switch_eng_cond_pushdown1.test b/mysql-test/t/optimizer_switch_eng_cond_pushdown1.test
new file mode 100644
index 00000000000..187aa145408
--- /dev/null
+++ b/mysql-test/t/optimizer_switch_eng_cond_pushdown1.test
@@ -0,0 +1,5 @@
+# check how --engine-condition-pushdown and --optimizer-switch
+# influence each other when used together (last wins).
+select @@session.engine_condition_pushdown,
+@@global.engine_condition_pushdown,
+@@session.optimizer_switch, @@global.optimizer_switch;
diff --git a/mysql-test/t/optimizer_switch_eng_cond_pushdown2-master.opt b/mysql-test/t/optimizer_switch_eng_cond_pushdown2-master.opt
new file mode 100644
index 00000000000..f48ab5b963b
--- /dev/null
+++ b/mysql-test/t/optimizer_switch_eng_cond_pushdown2-master.opt
@@ -0,0 +1 @@
+--engine-condition-pushdown=1 --optimizer-switch=engine_condition_pushdown=off
diff --git a/mysql-test/t/optimizer_switch_eng_cond_pushdown2.test b/mysql-test/t/optimizer_switch_eng_cond_pushdown2.test
new file mode 100644
index 00000000000..187aa145408
--- /dev/null
+++ b/mysql-test/t/optimizer_switch_eng_cond_pushdown2.test
@@ -0,0 +1,5 @@
+# check how --engine-condition-pushdown and --optimizer-switch
+# influence each other when used together (last wins).
+select @@session.engine_condition_pushdown,
+@@global.engine_condition_pushdown,
+@@session.optimizer_switch, @@global.optimizer_switch;
diff --git a/mysql-test/t/subselect3.test b/mysql-test/t/subselect3.test
index fab0a462157..39c97941031 100644
--- a/mysql-test/t/subselect3.test
+++ b/mysql-test/t/subselect3.test
@@ -794,3 +794,50 @@ SHOW STATUS LIKE '%Handler_read_rnd_next';
 DROP TABLE t1,t2;
 
 --echo End of 5.1 tests
+
+--echo #
+--echo # BUG#48920: COUNT DISTINCT returns 1 for NULL values when in a subquery 
+--echo #            in the select list
+--echo #
+
+--echo 
+CREATE TABLE t1 (
+  i int(11) DEFAULT NULL,
+  v varchar(1) DEFAULT NULL
+);
+
+--echo 
+INSERT INTO t1 VALUES (8,'v');
+INSERT INTO t1 VALUES (9,'r');
+INSERT INTO t1 VALUES (NULL,'y');
+
+--echo 
+CREATE TABLE t2 (
+  i int(11) DEFAULT NULL,
+  v varchar(1) DEFAULT NULL,
+  KEY i_key (i)
+);
+
+--echo 
+INSERT INTO t2 VALUES (NULL,'r');
+INSERT INTO t2 VALUES (0,'c');
+INSERT INTO t2 VALUES (0,'o');
+INSERT INTO t2 VALUES (2,'v');
+INSERT INTO t2 VALUES (7,'c');
+
+--echo 
+SELECT i, v, (SELECT COUNT(DISTINCT i)
+              FROM t1
+              WHERE v  = t2.v) as subsel
+FROM t2;
+
+--echo 
+EXPLAIN EXTENDED
+SELECT i, v, (SELECT COUNT(DISTINCT i)
+              FROM t1
+              WHERE v  = t2.v) as subsel
+FROM t2;
+
+DROP TABLE t1,t2;
+
+--echo End of 5.6 tests
diff --git a/sql/event_data_objects.cc b/sql/event_data_objects.cc
index fd9561eb132..7f4104f4a77 100644
--- a/sql/event_data_objects.cc
+++ b/sql/event_data_objects.cc
@@ -834,8 +834,9 @@ bool get_next_time(const Time_zone *time_zone, my_time_t *next,
   }
   else
   {
-    long diff_months= (long) (local_now.year - local_start.year)*12 +
-                      (local_now.month - local_start.month);
+    long diff_months= ((long) local_now.year - (long) local_start.year)*12 +
+                      ((long) local_now.month - (long) local_start.month);
+
     /*
       Unlike for seconds above, the formula below returns the interval
       that, when added to the local_start, will give the time in the
diff --git a/sql/item_func.cc b/sql/item_func.cc
index 557561789b2..d0af0d5f5e9 100644
--- a/sql/item_func.cc
+++ b/sql/item_func.cc
@@ -2953,7 +2953,7 @@ udf_handler::fix_fields(THD *thd, Item_result_field *func,
           String *res= arguments[i]->val_str(&buffers[i]);
           if (arguments[i]->null_value)
             continue;
-          f_args.args[i]= (char*) res->c_ptr();
+          f_args.args[i]= (char*) res->c_ptr_safe();
           f_args.lengths[i]= res->length();
           break;
         }
diff --git a/sql/item_sum.cc b/sql/item_sum.cc
index c33088e0276..a61c5d59d67 100644
--- a/sql/item_sum.cc
+++ b/sql/item_sum.cc
@@ -578,7 +578,14 @@ int Item_sum::set_aggregator(Aggregator::Aggregator_type aggregator)
 {
   if (aggr)
   {
+    /* 
+      Dependent subselects may be executed multiple times, making
+      set_aggregator to be called multiple times. The aggregator type
+      will be the same, but it needs to be reset so that it is
+      reevaluated with the new dependent data.
+    */
     DBUG_ASSERT(aggregator == aggr->Aggrtype());
+    aggr->clear();
     return FALSE;
   }
   switch (aggregator)
diff --git a/sql/mysql_priv.h b/sql/mysql_priv.h
index 33ca7eee89b..36d35ec8877 100644
--- a/sql/mysql_priv.h
+++ b/sql/mysql_priv.h
@@ -622,17 +622,19 @@ protected:
 #define MODE_PAD_CHAR_TO_FULL_LENGTH    (ULL(1) << 31)
 
 /* @@optimizer_switch flags. These must be in sync with optimizer_switch_typelib */
-#define OPTIMIZER_SWITCH_INDEX_MERGE 1
-#define OPTIMIZER_SWITCH_INDEX_MERGE_UNION 2
-#define OPTIMIZER_SWITCH_INDEX_MERGE_SORT_UNION 4
-#define OPTIMIZER_SWITCH_INDEX_MERGE_INTERSECT 8
-#define OPTIMIZER_SWITCH_LAST 16
+#define OPTIMIZER_SWITCH_INDEX_MERGE               (1ULL << 0)
+#define OPTIMIZER_SWITCH_INDEX_MERGE_UNION         (1ULL << 1)
+#define OPTIMIZER_SWITCH_INDEX_MERGE_SORT_UNION    (1ULL << 2)
+#define OPTIMIZER_SWITCH_INDEX_MERGE_INTERSECT     (1ULL << 3)
+#define OPTIMIZER_SWITCH_ENGINE_CONDITION_PUSHDOWN (1ULL << 4)
+#define OPTIMIZER_SWITCH_LAST                      (1ULL << 5)
 
 /* The following must be kept in sync with optimizer_switch_str in mysqld.cc */
 #define OPTIMIZER_SWITCH_DEFAULT (OPTIMIZER_SWITCH_INDEX_MERGE | \
                                   OPTIMIZER_SWITCH_INDEX_MERGE_UNION | \
                                   OPTIMIZER_SWITCH_INDEX_MERGE_SORT_UNION | \
-                                  OPTIMIZER_SWITCH_INDEX_MERGE_INTERSECT)
+                                  OPTIMIZER_SWITCH_INDEX_MERGE_INTERSECT | \
+                                  OPTIMIZER_SWITCH_ENGINE_CONDITION_PUSHDOWN)
 
 
 /*
@@ -2643,7 +2645,8 @@ enum options_mysqld
   OPT_SSL_CIPHER,
   OPT_SSL_KEY,
   OPT_UPDATE_LOG,
-  OPT_WANT_CORE
+  OPT_WANT_CORE,
+  OPT_ENGINE_CONDITION_PUSHDOWN
 };
 
 #endif /* MYSQL_SERVER */
diff --git a/sql/mysqld.cc b/sql/mysqld.cc
index be8f4c89ce0..28c299bdf91 100644
--- a/sql/mysqld.cc
+++ b/sql/mysqld.cc
@@ -7384,6 +7384,18 @@ mysqld_get_one_option(int optid,
     }
     break;
 #endif /* defined(ENABLED_DEBUG_SYNC) */
+  case OPT_ENGINE_CONDITION_PUSHDOWN:
+    /*
+      The last of --engine-condition-pushdown and --optimizer_switch on
+      command line wins (see get_options().
+    */
+    if (global_system_variables.engine_condition_pushdown)
+      global_system_variables.optimizer_switch|=
+        OPTIMIZER_SWITCH_ENGINE_CONDITION_PUSHDOWN;
+    else
+      global_system_variables.optimizer_switch&=
+        ~OPTIMIZER_SWITCH_ENGINE_CONDITION_PUSHDOWN;
+    break;
   }
   return 0;
 }
@@ -7610,6 +7622,11 @@ static int get_options(int *argc_ptr, char ***argv_ptr)
   else
     pool_of_threads_scheduler(&thread_scheduler);  /* purecov: tested */
 #endif
+
+  global_system_variables.engine_condition_pushdown=
+    test(global_system_variables.optimizer_switch &
+         OPTIMIZER_SWITCH_ENGINE_CONDITION_PUSHDOWN);
+
   return 0;
 }
 
diff --git a/sql/records.cc b/sql/records.cc
index 9ec19c55841..c97ffa152dc 100644
--- a/sql/records.cc
+++ b/sql/records.cc
@@ -270,7 +270,8 @@ void init_read_record(READ_RECORD *info,THD *thd, TABLE *table,
 				  thd->variables.read_buff_size);
   }
   /* Condition pushdown to storage engine */
-  if (thd->variables.engine_condition_pushdown && 
+  if ((thd->variables.optimizer_switch &
+       OPTIMIZER_SWITCH_ENGINE_CONDITION_PUSHDOWN) && 
       select && select->cond && 
       (select->cond->used_tables() & table->map) &&
       !table->file->pushed_cond)
diff --git a/sql/share/Makefile.am b/sql/share/Makefile.am
index c4078440abf..da19ed1c5a7 100644
--- a/sql/share/Makefile.am
+++ b/sql/share/Makefile.am
@@ -44,8 +44,8 @@ install-data-local:
 			        $(DESTDIR)$(pkgdatadir)/$$lang/errmsg.sys; \
 	done
 	$(mkinstalldirs) $(DESTDIR)$(pkgdatadir)/charsets
-		$(INSTALL_DATA) $(srcdir)/errmsg-utf8.txt \
-	        $(DESTDIR)$(pkgdatadir)/errmsg-utf8.txt; \
+	$(INSTALL_DATA) $(srcdir)/errmsg-utf8.txt \
+	$(DESTDIR)$(pkgdatadir)/errmsg-utf8.txt; \
 	$(INSTALL_DATA) $(srcdir)/charsets/README $(DESTDIR)$(pkgdatadir)/charsets/README
 	$(INSTALL_DATA) $(srcdir)/charsets/*.xml $(DESTDIR)$(pkgdatadir)/charsets
 
diff --git a/sql/sql_select.cc b/sql/sql_select.cc
index 5f1c5ac2a34..5647727089f 100644
--- a/sql/sql_select.cc
+++ b/sql/sql_select.cc
@@ -6347,7 +6347,8 @@ make_join_select(JOIN *join,SQL_SELECT *select,COND *cond)
           /* Push condition to storage engine if this is enabled
              and the condition is not guarded */
           tab->table->file->pushed_cond= NULL;
-	  if (thd->variables.engine_condition_pushdown)
+	  if (thd->variables.optimizer_switch &
+              OPTIMIZER_SWITCH_ENGINE_CONDITION_PUSHDOWN)
           {
             COND *push_cond= 
               make_cond_for_table(tmp, current_map, current_map);
@@ -16630,7 +16631,8 @@ static void select_describe(JOIN *join, bool need_tmp_table, bool need_order,
           {
             const COND *pushed_cond= tab->table->file->pushed_cond;
 
-            if (thd->variables.engine_condition_pushdown && pushed_cond)
+            if ((thd->variables.optimizer_switch &
+                 OPTIMIZER_SWITCH_ENGINE_CONDITION_PUSHDOWN) && pushed_cond)
             {
               extra.append(STRING_WITH_LEN("; Using where with pushed "
                                            "condition"));
diff --git a/sql/sys_vars.cc b/sql/sys_vars.cc
index 1bac48d053f..f3e2b5cec7c 100644
--- a/sql/sys_vars.cc
+++ b/sql/sys_vars.cc
@@ -1253,16 +1253,28 @@ static Sys_var_ulong Sys_optimizer_search_depth(
 static const char *optimizer_switch_names[]=
 {
   "index_merge", "index_merge_union", "index_merge_sort_union",
-  "index_merge_intersection",
+  "index_merge_intersection", "engine_condition_pushdown",
   "default", NullS
 };
+/** propagates changes to @@engine_condition_pushdown */
+static bool fix_optimizer_switch(sys_var *self, THD *thd,
+                                 enum_var_type type)
+{
+  SV *sv= (type == OPT_GLOBAL) ? &global_system_variables : &thd->variables;
+  sv->engine_condition_pushdown= 
+    test(sv->optimizer_switch & OPTIMIZER_SWITCH_ENGINE_CONDITION_PUSHDOWN);
+  return false;
+}
 static Sys_var_flagset Sys_optimizer_switch(
        "optimizer_switch",
        "optimizer_switch=option=val[,option=val...], where option is one of "
        "{index_merge, index_merge_union, index_merge_sort_union, "
-       "index_merge_intersection} and val is one of {on, off, default}",
+       "index_merge_intersection, engine_condition_pushdown}"
+       " and val is one of {on, off, default}",
        SESSION_VAR(optimizer_switch), CMD_LINE(REQUIRED_ARG),
-       optimizer_switch_names, DEFAULT(OPTIMIZER_SWITCH_DEFAULT));
+       optimizer_switch_names, DEFAULT(OPTIMIZER_SWITCH_DEFAULT),
+       NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(NULL),
+       ON_UPDATE(fix_optimizer_switch));
 
 static Sys_var_charptr Sys_pid_file(
        "pid_file", "Pid file used by safe_mysqld",
@@ -1959,11 +1971,26 @@ static Sys_var_ulong Sys_net_wait_timeout(
        VALID_RANGE(1, IF_WIN(INT_MAX32/1000, LONG_TIMEOUT)),
        DEFAULT(NET_WAIT_TIMEOUT), BLOCK_SIZE(1));
 
+/** propagates changes to the relevant flag of @@optimizer_switch */
+static bool fix_engine_condition_pushdown(sys_var *self, THD *thd,
+                                          enum_var_type type)
+{
+  SV *sv= (type == OPT_GLOBAL) ? &global_system_variables : &thd->variables;
+  if (sv->engine_condition_pushdown)
+    sv->optimizer_switch|= OPTIMIZER_SWITCH_ENGINE_CONDITION_PUSHDOWN;
+  else
+    sv->optimizer_switch&= ~OPTIMIZER_SWITCH_ENGINE_CONDITION_PUSHDOWN;
+  return false;
+}
 static Sys_var_mybool Sys_engine_condition_pushdown(
        "engine_condition_pushdown",
-       "Push supported query conditions to the storage engine",
-       SESSION_VAR(engine_condition_pushdown), CMD_LINE(OPT_ARG),
-       DEFAULT(TRUE));
+       "Push supported query conditions to the storage engine."
+       " Deprecated, use --optimizer-switch instead.",
+       SESSION_VAR(engine_condition_pushdown),
+       CMD_LINE(OPT_ARG, OPT_ENGINE_CONDITION_PUSHDOWN),
+       DEFAULT(TRUE), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(NULL),
+       ON_UPDATE(fix_engine_condition_pushdown),
+       DEPRECATED(70000, "'@@optimizer_switch'"));
 
 static Sys_var_plugin Sys_default_storage_engine(
        "default_storage_engine", "The default storage engine for new tables",