Merge 10.2 into 10.3

135 files changed, 1982 insertions, 579 deletions

diff --git a/cmake/check_linker_flag.cmake b/cmake/check_linker_flag.cmake
index ff4b91e89f6..1ea1772d79e 100644
--- a/cmake/check_linker_flag.cmake
+++ b/cmake/check_linker_flag.cmake
@@ -6,11 +6,11 @@ FUNCTION(MY_CHECK_AND_SET_LINKER_FLAG flag_to_set)
     RETURN()
   ENDIF()
   STRING(REGEX REPLACE "[-,= +]" "_" result "HAVE_LINK_FLAG_${flag_to_set}")
-  SET(SAVE_CMAKE_REQUIRED_LINK_OPTIONS "${CMAKE_REQUIRED_LINK_OPTIONS}")
+  SET(SAVE_CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES}")
   STRING(REGEX REPLACE "^-Wno-" "-W" flag_to_check ${flag_to_set})
-  SET(CMAKE_REQUIRED_LINK_OPTIONS ${CMAKE_REQUIRED_LINK_OPTIONS} ${flag_to_check})
+  SET(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} ${flag_to_check})
   CHECK_CXX_SOURCE_COMPILES("int main(void) { return 0; }" ${result})
-  SET(CMAKE_REQUIRED_LINK_OPTIONS "${SAVE_CMAKE_REQUIRED_LINK_OPTIONS}")
+  SET(CMAKE_REQUIRED_LIBRARIES "${SAVE_CMAKE_REQUIRED_LIBRARIES}")
   IF (${result})
     FOREACH(linktype SHARED MODULE EXE)
         IF(ARGN)
diff --git a/extra/mariabackup/xtrabackup.cc b/extra/mariabackup/xtrabackup.cc
index 529f4dbb7bb..8693165f350 100644
--- a/extra/mariabackup/xtrabackup.cc
+++ b/extra/mariabackup/xtrabackup.cc
@@ -2364,7 +2364,7 @@ check_if_skip_database(
 	if (databases_exclude_hash &&
 		find_filter_in_hashtable(name, databases_exclude_hash,
 					 &database) &&
-		!database->has_tables) {
+		(!database->has_tables || !databases_include_hash)) {
 		/* Database is found and there are no tables specified,
 		   skip entire db. */
 		return DATABASE_SKIP;
@@ -2720,7 +2720,7 @@ static lsn_t xtrabackup_copy_log(lsn_t start_lsn, lsn_t end_lsn, bool last)
 			scanned_lsn += data_len;
 		} else if (data_len
 			   >= OS_FILE_LOG_BLOCK_SIZE - LOG_BLOCK_TRL_SIZE
-			   || data_len <= LOG_BLOCK_HDR_SIZE) {
+			   || data_len < LOG_BLOCK_HDR_SIZE) {
 			/* We got a garbage block (abrupt end of the log). */
 			msg(0,"garbage block: " LSN_PF ",%zu",scanned_lsn, data_len);
 			break;
diff --git a/man/mysqlimport.1 b/man/mysqlimport.1
index 2482d99a71c..ed85824ee32 100644
--- a/man/mysqlimport.1
+++ b/man/mysqlimport.1
@@ -57,13 +57,13 @@ all would be imported into a table named
 patient\&.
 .PP
 .PP
-\fBmysqldump\fR
+\fBmysqlimport\fR
 supports the following options, which can be specified on the command line or in the
-[mysqldump]
+[mysqlimport]
 and
 [client]
 option file groups\&.
-\fBmysqldump\fR
+\fBmysqlimport\fR
 also supports the options for processing option files\&.
 .sp
 .RS 4
@@ -267,17 +267,17 @@ Empty the table before importing the text file\&.
 .sp -1
 .IP \(bu 2.3
 .\}
-.\" mysqldump: fields-terminated-by option
-.\" fields-terminated-by option: mysqldump
+.\" mysqlimport: fields-terminated-by option
+.\" fields-terminated-by option: mysqlimport
 \fB\-\-fields\-terminated\-by=\&.\&.\&.\fR,
-.\" mysqldump: fields-enclosed-by option
-.\" fields-enclosed-by option: mysqldump
+.\" mysqlimport: fields-enclosed-by option
+.\" fields-enclosed-by option: mysqlimport
 \fB\-\-fields\-enclosed\-by=\&.\&.\&.\fR,
-.\" mysqldump: fields-optionally-enclosed-by option
-.\" fields-optionally-enclosed-by option: mysqldump
+.\" mysqlimport: fields-optionally-enclosed-by option
+.\" fields-optionally-enclosed-by option: mysqlimport
 \fB\-\-fields\-optionally\-enclosed\-by=\&.\&.\&.\fR,
-.\" mysqldump: fields-escaped-by option
-.\" fields-escaped-by option: mysqldump
+.\" mysqlimport: fields-escaped-by option
+.\" fields-escaped-by option: mysqlimport
 \fB\-\-fields\-escaped\-by=\&.\&.\&.\fR
 .sp
 These options have the same meaning as the corresponding clauses for
@@ -379,8 +379,8 @@ lines of the data file\&.
 .sp -1
 .IP \(bu 2.3
 .\}
-.\" mysqldump: lines-terminated-by option
-.\" lines-terminated-by option: mysqldump
+.\" mysqlimport: lines-terminated-by option
+.\" lines-terminated-by option: mysqlimport
 \fB\-\-lines\-terminated\-by=\&.\&.\&.\fR
 .sp
 This option has the same meaning as the corresponding clause for
diff --git a/mysql-test/include/galera_have_debug_sync.inc b/mysql-test/include/galera_have_debug_sync.inc
new file mode 100644
index 00000000000..21e7b3c88c3
--- /dev/null
+++ b/mysql-test/include/galera_have_debug_sync.inc
@@ -0,0 +1,9 @@
+--disable_query_log
+
+--let $galera_have_debug_sync = `SELECT 1 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_debug_sync_waiters'`
+
+--if (!$galera_have_debug_sync) {
+	--skip Test requires Galera debug library with debug_sync functionality
+}
+
+--enable_query_log
diff --git a/mysql-test/include/icp_debug_kill.inc b/mysql-test/include/icp_debug_kill.inc
new file mode 100644
index 00000000000..d0ecc842869
--- /dev/null
+++ b/mysql-test/include/icp_debug_kill.inc
@@ -0,0 +1,50 @@
+--source include/have_debug.inc
+--source include/have_debug_sync.inc
+--source include/count_sessions.inc
+
+--disable_warnings
+drop table if exists t0,t1,t2;
+--enable_warnings
+
+create table t0(a int primary key);
+insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+
+create table t1(a int primary key);
+insert into t1 select A.a + B.a* 10 + C.a * 100 from t0 A, t0 B, t0 C;
+
+create table t2 (
+  kp1 int,
+  kp2 int,
+  col char(100),
+  key(kp1, kp2)
+);
+insert into t2 select a, a, a from t1;
+
+select engine from information_schema.tables
+where table_schema=database() and table_name='t2';
+
+explain 
+select * from t2 where kp1 between 10 and 20 and kp2 +1 >100;
+
+let $target_id= `select connection_id()`;
+
+set debug_sync='handler_index_cond_check SIGNAL at_icp_check WAIT_FOR go';
+send
+select * from t2 where kp1 between 10 and 20 and kp2 +1 >100;
+
+connect (con1, localhost, root,,);
+connection con1;
+set debug_sync='now WAIT_FOR at_icp_check';
+evalp kill query $target_id;
+set debug_sync='now SIGNAL go';
+
+connection default;
+
+--error ER_QUERY_INTERRUPTED
+reap;
+set debug_sync='RESET';
+
+disconnect con1;
+drop table t0,t1,t2;
+--source include/wait_until_count_sessions.inc
+
diff --git a/mysql-test/include/mtr_check.sql b/mysql-test/include/mtr_check.sql
index 0f6d3c6f1e5..e8cdd1789db 100644
--- a/mysql-test/include/mtr_check.sql
+++ b/mysql-test/include/mtr_check.sql
@@ -35,6 +35,7 @@ BEGIN
      AND variable_name != 'INNODB_BUFFER_POOL_LOAD_AT_STARTUP'
      AND variable_name not like 'GTID%POS'
      AND variable_name != 'GTID_BINLOG_STATE'
+     AND variable_name != 'THREAD_POOL_SIZE'
    ORDER BY variable_name;
 
   -- Dump all databases, there should be none
diff --git a/mysql-test/main/alter_table.result b/mysql-test/main/alter_table.result
index e0996379ed9..2f3ac342aed 100644
--- a/mysql-test/main/alter_table.result
+++ b/mysql-test/main/alter_table.result
@@ -2517,6 +2517,17 @@ t2	CREATE TABLE `t2` (
 ) ENGINE=InnoDB DEFAULT CHARSET=latin1
 DROP TABLE t2, t1;
 #
+# MDEV-18163: Assertion `table_share->tmp_table != NO_TMP_TABLE ||
+# m_lock_type != 2' failed in handler::ha_rnd_next(); / Assertion
+# `table_list->table' failed in find_field_in_table_ref / ERROR 1901
+# (on optimized builds)
+#
+CREATE TABLE t1 (k1 varchar(10) DEFAULT 5);
+CREATE TABLE t2 (i1 int);
+ALTER TABLE t1 ALTER COLUMN k1 SET DEFAULT (SELECT 1 FROM t2 limit 1);
+ERROR HY000: Function or expression 'select ...' cannot be used in the DEFAULT clause of `k1`
+DROP TABLE t1,t2;
+#
 # End of 10.2 tests
 #
 #
diff --git a/mysql-test/main/alter_table.test b/mysql-test/main/alter_table.test
index dc6983da38b..36146195b67 100644
--- a/mysql-test/main/alter_table.test
+++ b/mysql-test/main/alter_table.test
@@ -2037,6 +2037,20 @@ SHOW CREATE TABLE t2;
 DROP TABLE t2, t1;
 
 --echo #
+--echo # MDEV-18163: Assertion `table_share->tmp_table != NO_TMP_TABLE ||
+--echo # m_lock_type != 2' failed in handler::ha_rnd_next(); / Assertion
+--echo # `table_list->table' failed in find_field_in_table_ref / ERROR 1901
+--echo # (on optimized builds)
+--echo #
+
+
+CREATE TABLE t1 (k1 varchar(10) DEFAULT 5);
+CREATE TABLE t2 (i1 int);
+--error ER_GENERATED_COLUMN_FUNCTION_IS_NOT_ALLOWED
+ALTER TABLE t1 ALTER COLUMN k1 SET DEFAULT (SELECT 1 FROM t2 limit 1);
+DROP TABLE t1,t2;
+
+--echo #
 --echo # End of 10.2 tests
 --echo #
 
diff --git a/mysql-test/main/aria_icp_debug.result b/mysql-test/main/aria_icp_debug.result
new file mode 100644
index 00000000000..fc01ee4fb3b
--- /dev/null
+++ b/mysql-test/main/aria_icp_debug.result
@@ -0,0 +1,34 @@
+set default_storage_engine=aria;
+drop table if exists t0,t1,t2;
+create table t0(a int primary key);
+insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+create table t1(a int primary key);
+insert into t1 select A.a + B.a* 10 + C.a * 100 from t0 A, t0 B, t0 C;
+create table t2 (
+kp1 int,
+kp2 int,
+col char(100),
+key(kp1, kp2)
+);
+insert into t2 select a, a, a from t1;
+select engine from information_schema.tables
+where table_schema=database() and table_name='t2';
+engine
+Aria
+explain 
+select * from t2 where kp1 between 10 and 20 and kp2 +1 >100;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t2	range	kp1	kp1	5	NULL	10	Using index condition
+set debug_sync='handler_index_cond_check SIGNAL at_icp_check WAIT_FOR go';
+select * from t2 where kp1 between 10 and 20 and kp2 +1 >100;
+connect  con1, localhost, root,,;
+connection con1;
+set debug_sync='now WAIT_FOR at_icp_check';
+kill query $target_id;
+set debug_sync='now SIGNAL go';
+connection default;
+ERROR 70100: Query execution was interrupted
+set debug_sync='RESET';
+disconnect con1;
+drop table t0,t1,t2;
+set default_storage_engine=default;
diff --git a/mysql-test/main/aria_icp_debug.test b/mysql-test/main/aria_icp_debug.test
new file mode 100644
index 00000000000..bbdd59d6012
--- /dev/null
+++ b/mysql-test/main/aria_icp_debug.test
@@ -0,0 +1,5 @@
+
+set default_storage_engine=aria;
+--source include/icp_debug_kill.inc
+set default_storage_engine=default;
+
diff --git a/mysql-test/main/information_schema,debug.rdiff b/mysql-test/main/information_schema,debug.rdiff
index afbdde30ab3..c4ef0a41547 100644
--- a/mysql-test/main/information_schema,debug.rdiff
+++ b/mysql-test/main/information_schema,debug.rdiff
@@ -1,17 +1,11 @@
 --- mysql-test/main/information_schema.result
 +++ mysql-test/main/information_schema.result
-@@ -2208,9 +2208,11 @@
- # Diagnostics_area::sql_errno upon query from I_S with LIMIT ROWS EXAMINED
- #
+@@ -2210,7 +2210,7 @@
  SELECT * FROM INFORMATION_SCHEMA.`COLUMNS` LIMIT ROWS EXAMINED 10;
--TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	COLUMN_NAME	ORDINAL_POSITION	COLUMN_DEFAULT	IS_NULLABLE	DATA_TYPE	CHARACTER_MAXIMUM_LENGTH	CHARACTER_OCTET_LENGTH	NUMERIC_PRECISION	NUMERIC_SCALE	DATETIME_PRECISION	CHARACTER_SET_NAME	COLLATION_NAME	COLUMN_TYPE	COLUMN_KEY	EXTRA	PRIVILEGES	COLUMN_COMMENT	IS_GENERATED	GENERATION_EXPRESSION
--Warnings:
+ TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	COLUMN_NAME	ORDINAL_POSITION	COLUMN_DEFAULT	IS_NULLABLE	DATA_TYPE	CHARACTER_MAXIMUM_LENGTH	CHARACTER_OCTET_LENGTH	NUMERIC_PRECISION	NUMERIC_SCALE	DATETIME_PRECISION	CHARACTER_SET_NAME	COLLATION_NAME	COLUMN_TYPE	COLUMN_KEY	EXTRA	PRIVILEGES	COLUMN_COMMENT	IS_GENERATED	GENERATION_EXPRESSION
+ Warnings:
 -Warning	1931	Query execution was interrupted. The query examined at least 671 rows, which exceeds LIMIT ROWS EXAMINED (10). The query result may be incomplete
-+ERROR HY000: Unknown error
-+SHOW WARNINGS;
-+Level	Code	Message
-+Error	1105	Unknown error
-+Warning	1931	Query execution was interrupted. The query examined at least 11 rows, which exceeds LIMIT ROWS EXAMINED (10). The query result may be incomplete
++Warning	1931	Query execution was interrupted. The query examined at least 12 rows, which exceeds LIMIT ROWS EXAMINED (10). The query result may be incomplete
  #
  # End of 10.2 Test
  #
diff --git a/mysql-test/main/innodb_icp_debug.result b/mysql-test/main/innodb_icp_debug.result
new file mode 100644
index 00000000000..5a169650c8e
--- /dev/null
+++ b/mysql-test/main/innodb_icp_debug.result
@@ -0,0 +1,34 @@
+set default_storage_engine=innodb;
+drop table if exists t0,t1,t2;
+create table t0(a int primary key);
+insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+create table t1(a int primary key);
+insert into t1 select A.a + B.a* 10 + C.a * 100 from t0 A, t0 B, t0 C;
+create table t2 (
+kp1 int,
+kp2 int,
+col char(100),
+key(kp1, kp2)
+);
+insert into t2 select a, a, a from t1;
+select engine from information_schema.tables
+where table_schema=database() and table_name='t2';
+engine
+InnoDB
+explain 
+select * from t2 where kp1 between 10 and 20 and kp2 +1 >100;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t2	range	kp1	kp1	5	NULL	11	Using index condition
+set debug_sync='handler_index_cond_check SIGNAL at_icp_check WAIT_FOR go';
+select * from t2 where kp1 between 10 and 20 and kp2 +1 >100;
+connect  con1, localhost, root,,;
+connection con1;
+set debug_sync='now WAIT_FOR at_icp_check';
+kill query $target_id;
+set debug_sync='now SIGNAL go';
+connection default;
+ERROR 70100: Query execution was interrupted
+set debug_sync='RESET';
+disconnect con1;
+drop table t0,t1,t2;
+set default_storage_engine=default;
diff --git a/mysql-test/main/innodb_icp_debug.test b/mysql-test/main/innodb_icp_debug.test
new file mode 100644
index 00000000000..4aa08c61e87
--- /dev/null
+++ b/mysql-test/main/innodb_icp_debug.test
@@ -0,0 +1,6 @@
+--source include/have_innodb.inc
+
+set default_storage_engine=innodb;
+--source include/icp_debug_kill.inc
+set default_storage_engine=default;
+
diff --git a/mysql-test/main/limit_rows_examined.result b/mysql-test/main/limit_rows_examined.result
index 8458e063d97..2984bf46cec 100644
--- a/mysql-test/main/limit_rows_examined.result
+++ b/mysql-test/main/limit_rows_examined.result
@@ -861,3 +861,18 @@ Warnings:
 Warning	1931	Query execution was interrupted. The query examined at least 22 rows, which exceeds LIMIT ROWS EXAMINED (21). The query result may be incomplete
 drop view v;
 drop table t1, t2;
+#
+# 10.1 Test
+#
+# MDEV-17729: Assertion `! is_set() || m_can_overwrite_status'
+# failed in Diagnostics_area::set_error_status
+#
+set @old_mode= @@sql_mode;
+CREATE TABLE t1(id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,k INT, c CHAR(20));
+INSERT INTO t1 (k,c) VALUES(0,'0'), (0,'0'),(0,'0'),(0,'0'),(0,'0'),(0,'0'),(0,'0');
+SET @@sql_mode='STRICT_TRANS_TABLES';
+INSERT INTO t1 (c) SELECT k FROM t1 LIMIT ROWS EXAMINED 2;
+Warnings:
+Warning	1931	Query execution was interrupted. The query examined at least 3 rows, which exceeds LIMIT ROWS EXAMINED (2). The query result may be incomplete
+SET @@sql_mode=@old_mode;
+DROP TABLE t1;
diff --git a/mysql-test/main/limit_rows_examined.test b/mysql-test/main/limit_rows_examined.test
index 28b39a4caa1..4ccf25dc17a 100644
--- a/mysql-test/main/limit_rows_examined.test
+++ b/mysql-test/main/limit_rows_examined.test
@@ -577,3 +577,20 @@ EXECUTE ps;
 
 drop view v;
 drop table t1, t2;
+
+--echo #
+--echo # 10.1 Test
+--echo #
+--echo # MDEV-17729: Assertion `! is_set() || m_can_overwrite_status'
+--echo # failed in Diagnostics_area::set_error_status
+--echo #
+set @old_mode= @@sql_mode;
+
+CREATE TABLE t1(id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,k INT, c CHAR(20));
+INSERT INTO t1 (k,c) VALUES(0,'0'), (0,'0'),(0,'0'),(0,'0'),(0,'0'),(0,'0'),(0,'0');
+
+SET @@sql_mode='STRICT_TRANS_TABLES';
+INSERT INTO t1 (c) SELECT k FROM t1 LIMIT ROWS EXAMINED 2;
+
+SET @@sql_mode=@old_mode;
+DROP TABLE t1;
diff --git a/mysql-test/main/log_tables.result b/mysql-test/main/log_tables.result
index 6059afc6631..84e43a6be00 100644
--- a/mysql-test/main/log_tables.result
+++ b/mysql-test/main/log_tables.result
@@ -380,6 +380,14 @@ slow_log
 slow_log_new
 drop table slow_log_new, general_log_new;
 use test;
+SET GLOBAL LOG_OUTPUT = 'FILE';
+SET GLOBAL slow_query_log = 1;
+SET GLOBAL general_log = 1;
+ALTER TABLE mysql.slow_log ADD COLUMN comment_text TEXT NOT NULL;
+ALTER TABLE mysql.general_log ADD COLUMN comment_text TEXT NOT NULL;
+SET GLOBAL LOG_OUTPUT = 'NONE';
+ALTER TABLE mysql.slow_log DROP COLUMN comment_text;
+ALTER TABLE mysql.general_log DROP COLUMN comment_text;
 SET GLOBAL LOG_OUTPUT = 'TABLE';
 SET GLOBAL general_log = 0;
 FLUSH LOGS;
diff --git a/mysql-test/main/log_tables.test b/mysql-test/main/log_tables.test
index 0823b3e0eb4..97a143a8fa5 100644
--- a/mysql-test/main/log_tables.test
+++ b/mysql-test/main/log_tables.test
@@ -54,7 +54,7 @@ select * from general_log where argument like '%general_log%';
 
 #
 # Check some basic queries interfering with the log tables.
-# In our test we'll use a tbale with verbose comments to the short
+# In our test we'll use a table with verbose comments to the short
 # command type names, used in the tables
 #
 
@@ -475,6 +475,24 @@ drop table slow_log_new, general_log_new;
 use test;
 
 #
+# Bug#69953 / MDEV-4851
+# Log tables should be modifable on LOG_OUTPUT != TABLE
+#
+#
+
+SET GLOBAL LOG_OUTPUT = 'FILE';
+SET GLOBAL slow_query_log = 1;
+SET GLOBAL general_log = 1;
+
+ALTER TABLE mysql.slow_log ADD COLUMN comment_text TEXT NOT NULL;
+ALTER TABLE mysql.general_log ADD COLUMN comment_text TEXT NOT NULL;
+
+SET GLOBAL LOG_OUTPUT = 'NONE';
+ALTER TABLE mysql.slow_log DROP COLUMN comment_text;
+ALTER TABLE mysql.general_log DROP COLUMN comment_text;
+
+
+#
 # Bug#27857 (Log tables supplies the wrong value for generating
 #            AUTO_INCREMENT numbers)
 #
diff --git a/mysql-test/main/multi_update_big.result b/mysql-test/main/multi_update_big.result
index 3712e638f40..746a158f21f 100644
--- a/mysql-test/main/multi_update_big.result
+++ b/mysql-test/main/multi_update_big.result
@@ -1,6 +1,5 @@
-DROP TABLE IF EXISTS t1,t2;
 CREATE TABLE t1 ( a INT NOT NULL, b INT NOT NULL) ;
-# The protocolling of many inserts into t1 is suppressed.
+INSERT INTO t1 SELECT seq,seq FROM seq_1_to_2097152;
 ALTER TABLE t1 ADD INDEX i1(a);
 DELETE FROM t1 WHERE a > 2000000;
 CREATE TABLE t2 LIKE t1;
diff --git a/mysql-test/main/multi_update_big.test b/mysql-test/main/multi_update_big.test
index a0f17fabec4..d6fec704822 100644
--- a/mysql-test/main/multi_update_big.test
+++ b/mysql-test/main/multi_update_big.test
@@ -1,4 +1,5 @@
 --source include/long_test.inc
+--source include/have_sequence.inc
 
 #
 # Test of update statement that uses many tables.
@@ -40,25 +41,9 @@ if (`SELECT '$BIG_TEST' = '' AND $need_big = 1`)
 # Bug#1820 Rows not deleted from second table on multi-table delete
 #
 
---disable_warnings
-DROP TABLE IF EXISTS t1,t2;
---enable_warnings
-
 CREATE TABLE t1 ( a INT NOT NULL, b INT NOT NULL) ;
---echo # The protocolling of many inserts into t1 is suppressed.
---disable_query_log
-INSERT INTO t1 VALUES (1,1),(2,2),(3,3),(4,4);
-let $1=19;
-set @d=4;
-begin;
-while ($1)
-{
-  eval INSERT INTO t1 SELECT a+@d,b+@d FROM t1;
-  eval SET @d=@d*2;
-  dec $1;
-}
-commit;
---enable_query_log
+INSERT INTO t1 SELECT seq,seq FROM seq_1_to_2097152;
+
 ALTER TABLE t1 ADD INDEX i1(a);
 DELETE FROM t1 WHERE a > 2000000;
 CREATE TABLE t2 LIKE t1;
diff --git a/mysql-test/main/myisam_icp_debug.result b/mysql-test/main/myisam_icp_debug.result
new file mode 100644
index 00000000000..cb45a0e2274
--- /dev/null
+++ b/mysql-test/main/myisam_icp_debug.result
@@ -0,0 +1,32 @@
+drop table if exists t0,t1,t2;
+create table t0(a int primary key);
+insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+create table t1(a int primary key);
+insert into t1 select A.a + B.a* 10 + C.a * 100 from t0 A, t0 B, t0 C;
+create table t2 (
+kp1 int,
+kp2 int,
+col char(100),
+key(kp1, kp2)
+);
+insert into t2 select a, a, a from t1;
+select engine from information_schema.tables
+where table_schema=database() and table_name='t2';
+engine
+MyISAM
+explain 
+select * from t2 where kp1 between 10 and 20 and kp2 +1 >100;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t2	range	kp1	kp1	5	NULL	11	Using index condition
+set debug_sync='handler_index_cond_check SIGNAL at_icp_check WAIT_FOR go';
+select * from t2 where kp1 between 10 and 20 and kp2 +1 >100;
+connect  con1, localhost, root,,;
+connection con1;
+set debug_sync='now WAIT_FOR at_icp_check';
+kill query $target_id;
+set debug_sync='now SIGNAL go';
+connection default;
+ERROR 70100: Query execution was interrupted
+set debug_sync='RESET';
+disconnect con1;
+drop table t0,t1,t2;
diff --git a/mysql-test/main/myisam_icp_debug.test b/mysql-test/main/myisam_icp_debug.test
new file mode 100644
index 00000000000..d5b1af799fa
--- /dev/null
+++ b/mysql-test/main/myisam_icp_debug.test
@@ -0,0 +1 @@
+--source include/icp_debug_kill.inc
diff --git a/mysql-test/main/mysql_upgrade.result b/mysql-test/main/mysql_upgrade.result
index aa58440747a..41556e21ced 100644
--- a/mysql-test/main/mysql_upgrade.result
+++ b/mysql-test/main/mysql_upgrade.result
@@ -571,7 +571,178 @@ t1	CREATE TABLE `t1` (
 DROP TABLE test.t1;
 SET GLOBAL enforce_storage_engine=NULL;
 End of 10.1 tests
-Start of 10.3 tests
+#
+# MDEV-23201 'Roles' are created incorrectly on an install that was previously MySQL 5.7
+#
+#
+FLUSH TABLES mysql.user;
+FLUSH PRIVILEGES;
+SHOW CREATE TABLE mysql.user;
+Table	Create Table
+user	CREATE TABLE `user` (
+  `Host` char(60) COLLATE utf8_bin NOT NULL DEFAULT '',
+  `User` char(32) COLLATE utf8_bin NOT NULL DEFAULT '',
+  `Select_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Insert_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Update_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Delete_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Create_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Drop_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Reload_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Shutdown_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Process_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `File_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Grant_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `References_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Index_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Alter_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Show_db_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Super_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Create_tmp_table_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Lock_tables_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Execute_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Repl_slave_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Repl_client_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Create_view_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Show_view_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Create_routine_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Alter_routine_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Create_user_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Event_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Trigger_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Create_tablespace_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `ssl_type` enum('','ANY','X509','SPECIFIED') CHARACTER SET utf8 NOT NULL DEFAULT '',
+  `ssl_cipher` blob NOT NULL,
+  `x509_issuer` blob NOT NULL,
+  `x509_subject` blob NOT NULL,
+  `max_questions` int(11) unsigned NOT NULL DEFAULT 0,
+  `max_updates` int(11) unsigned NOT NULL DEFAULT 0,
+  `max_connections` int(11) unsigned NOT NULL DEFAULT 0,
+  `max_user_connections` int(11) unsigned NOT NULL DEFAULT 0,
+  `plugin` char(64) COLLATE utf8_bin NOT NULL DEFAULT 'mysql_native_password',
+  `authentication_string` text COLLATE utf8_bin DEFAULT NULL,
+  `password_expired` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `password_last_changed` timestamp NULL DEFAULT NULL,
+  `password_lifetime` smallint(5) unsigned DEFAULT NULL,
+  `account_locked` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  PRIMARY KEY (`Host`,`User`)
+) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='Users and global privileges'
+Phase 1/7: Checking and upgrading mysql database
+Processing databases
+mysql
+mysql.column_stats                                 OK
+mysql.columns_priv                                 OK
+mysql.db                                           OK
+mysql.event                                        OK
+mysql.func                                         OK
+mysql.gtid_slave_pos                               OK
+mysql.help_category                                OK
+mysql.help_keyword                                 OK
+mysql.help_relation                                OK
+mysql.help_topic                                   OK
+mysql.host                                         OK
+mysql.index_stats                                  OK
+mysql.innodb_index_stats                           OK
+mysql.innodb_table_stats                           OK
+mysql.plugin                                       OK
+mysql.proc                                         OK
+mysql.procs_priv                                   OK
+mysql.proxies_priv                                 OK
+mysql.roles_mapping                                OK
+mysql.servers                                      OK
+mysql.table_stats                                  OK
+mysql.tables_priv                                  OK
+mysql.time_zone                                    OK
+mysql.time_zone_leap_second                        OK
+mysql.time_zone_name                               OK
+mysql.time_zone_transition                         OK
+mysql.time_zone_transition_type                    OK
+mysql.transaction_registry                         OK
+mysql.user                                         OK
+Upgrading from a version before MariaDB-10.1
+Phase 2/7: Installing used storage engines
+Checking for tables with unknown storage engine
+Phase 3/7: Fixing views
+Phase 4/7: Running 'mysql_fix_privilege_tables'
+Phase 5/7: Fixing table and database names
+Phase 6/7: Checking and upgrading tables
+Processing databases
+information_schema
+mtr
+mtr.global_suppressions                            OK
+mtr.test_suppressions                              OK
+performance_schema
+test
+Phase 7/7: Running 'FLUSH PRIVILEGES'
+OK
+SHOW CREATE TABLE mysql.user;
+Table	Create Table
+user	CREATE TABLE `user` (
+  `Host` char(60) COLLATE utf8_bin NOT NULL DEFAULT '',
+  `User` char(80) COLLATE utf8_bin NOT NULL DEFAULT '',
+  `Password` char(41) CHARACTER SET latin1 COLLATE latin1_bin NOT NULL DEFAULT '',
+  `Select_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Insert_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Update_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Delete_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Create_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Drop_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Reload_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Shutdown_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Process_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `File_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Grant_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `References_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Index_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Alter_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Show_db_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Super_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Create_tmp_table_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Lock_tables_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Execute_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Repl_slave_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Repl_client_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Create_view_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Show_view_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Create_routine_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Alter_routine_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Create_user_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Event_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Trigger_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Create_tablespace_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `Delete_history_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `ssl_type` enum('','ANY','X509','SPECIFIED') CHARACTER SET utf8 NOT NULL DEFAULT '',
+  `ssl_cipher` blob NOT NULL,
+  `x509_issuer` blob NOT NULL,
+  `x509_subject` blob NOT NULL,
+  `max_questions` int(11) unsigned NOT NULL DEFAULT 0,
+  `max_updates` int(11) unsigned NOT NULL DEFAULT 0,
+  `max_connections` int(11) unsigned NOT NULL DEFAULT 0,
+  `max_user_connections` int(11) NOT NULL DEFAULT 0,
+  `plugin` char(64) CHARACTER SET latin1 NOT NULL DEFAULT '',
+  `authentication_string` text COLLATE utf8_bin NOT NULL,
+  `password_expired` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `is_role` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N',
+  `default_role` char(80) COLLATE utf8_bin NOT NULL DEFAULT '',
+  `max_statement_time` decimal(12,6) NOT NULL DEFAULT 0.000000,
+  `password_last_changed` timestamp NULL DEFAULT NULL,
+  `password_lifetime` smallint(5) unsigned DEFAULT NULL,
+  `account_locked` enum('N','Y') COLLATE utf8_bin NOT NULL DEFAULT 'N',
+  PRIMARY KEY (`Host`,`User`)
+) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='Users and global privileges'
+CREATE ROLE `aRole`;
+SET ROLE `aRole`;
+FLUSH PRIVILEGES;
+SET ROLE `aRole`;
+SELECT `User`, `is_role` FROM `mysql`.`user`;
+User	is_role
+mysql.session	N
+root	N
+mysql.sys	N
+aRole	Y
+DROP ROLE `aRole`;
+FLUSH PRIVILEGES;
+End of 10.2 tests
 #
 # Ensure that mysql_upgrade correctly sets truncate_versioning_priv
 # on upgrade from 10.2
@@ -590,3 +761,4 @@ GRANT USAGE ON *.* TO `user3`@`%`
 GRANT ALL PRIVILEGES ON `roelt`.`test2` TO `user3`@`%`
 DROP USER 'user3'@'%';
 update mysql.db set Delete_history_priv='Y' where db like 'test%';
+End of 10.3 tests
diff --git a/mysql-test/main/mysql_upgrade.test b/mysql-test/main/mysql_upgrade.test
index a3d8ba0375c..b5a5c173e26 100644
--- a/mysql-test/main/mysql_upgrade.test
+++ b/mysql-test/main/mysql_upgrade.test
@@ -220,7 +220,40 @@ SET GLOBAL enforce_storage_engine=NULL;
 
 --echo End of 10.1 tests
 
---echo Start of 10.3 tests
+--echo #
+--echo # MDEV-23201 'Roles' are created incorrectly on an install that was previously MySQL 5.7
+--echo #
+--echo #
+
+--exec $MYSQL_DUMP --result-file $MYSQLTEST_VARDIR/tmp/user.sql mysql user
+--remove_file $MYSQLD_DATADIR/mysql/user.frm
+--remove_file $MYSQLD_DATADIR/mysql/user.MYI
+--remove_file $MYSQLD_DATADIR/mysql/user.MYD
+
+--copy_file std_data/mysql57user.frm $MYSQLD_DATADIR/mysql/user.frm
+--copy_file std_data/mysql57user.MYI $MYSQLD_DATADIR/mysql/user.MYI
+--copy_file std_data/mysql57user.MYD $MYSQLD_DATADIR/mysql/user.MYD
+FLUSH TABLES mysql.user;
+FLUSH PRIVILEGES;
+SHOW CREATE TABLE mysql.user;
+
+--exec $MYSQL_UPGRADE --force 2>&1
+SHOW CREATE TABLE mysql.user;
+
+CREATE ROLE `aRole`;
+SET ROLE `aRole`;
+
+FLUSH PRIVILEGES;
+
+SET ROLE `aRole`;
+SELECT `User`, `is_role` FROM `mysql`.`user`;
+
+DROP ROLE `aRole`;
+--exec $MYSQL mysql < $MYSQLTEST_VARDIR/tmp/user.sql
+FLUSH PRIVILEGES;
+--remove_file $MYSQLD_DATADIR/mysql_upgrade_info
+
+--echo End of 10.2 tests
 
 --echo #
 --echo # Ensure that mysql_upgrade correctly sets truncate_versioning_priv
@@ -241,3 +274,5 @@ flush privileges;
 SHOW GRANTS FOR 'user3'@'%';
 DROP USER 'user3'@'%';
 update mysql.db set Delete_history_priv='Y' where db like 'test%';
+
+--echo End of 10.3 tests
diff --git a/mysql-test/main/partition.result b/mysql-test/main/partition.result
index c197c370408..e0243d51d0a 100644
--- a/mysql-test/main/partition.result
+++ b/mysql-test/main/partition.result
@@ -2799,5 +2799,16 @@ id
 16
 drop table t1;
 #
+# MDEV-5628: Assertion `! is_set()' or `!is_set() ||
+# (m_status == DA_OK_BULK && is_bulk_op())' fails on UPDATE on a
+# partitioned table with subquery (MySQL:71630)
+#
+CREATE TABLE t1 (a INT) PARTITION BY HASH(a) PARTITIONS 2;
+CREATE TABLE t2 (b INT);
+INSERT INTO t2 VALUES (1),(2);
+UPDATE t1 SET a = 7 WHERE a = ( SELECT b FROM t2 ) ORDER BY a LIMIT 6;
+ERROR 21000: Subquery returns more than 1 row
+DROP TABLE t1,t2;
+#
 # End of 10.1 tests
 #
diff --git a/mysql-test/main/partition.test b/mysql-test/main/partition.test
index 0ac91611e43..cc19bb83494 100644
--- a/mysql-test/main/partition.test
+++ b/mysql-test/main/partition.test
@@ -3002,5 +3002,21 @@ select id from t1 where data = 'ab' order by id;
 drop table t1;
 
 --echo #
+--echo # MDEV-5628: Assertion `! is_set()' or `!is_set() ||
+--echo # (m_status == DA_OK_BULK && is_bulk_op())' fails on UPDATE on a
+--echo # partitioned table with subquery (MySQL:71630)
+--echo #
+
+CREATE TABLE t1 (a INT) PARTITION BY HASH(a) PARTITIONS 2;
+
+CREATE TABLE t2 (b INT);
+INSERT INTO t2 VALUES (1),(2);
+
+--error ER_SUBQUERY_NO_1_ROW
+UPDATE t1 SET a = 7 WHERE a = ( SELECT b FROM t2 ) ORDER BY a LIMIT 6;
+
+DROP TABLE t1,t2;
+
+--echo #
 --echo # End of 10.1 tests
 --echo #
diff --git a/mysql-test/main/pool_of_threads.result b/mysql-test/main/pool_of_threads.result
index 9c02dfac9cd..5f501eb1b68 100644
--- a/mysql-test/main/pool_of_threads.result
+++ b/mysql-test/main/pool_of_threads.result
@@ -2188,3 +2188,8 @@ sleep(50)
 connection extracon;
 sleep(5.5)
 0
+connect  comp_con,localhost,root,,,,,COMPRESS;
+SELECT 1;
+1
+1
+disconnect comp_con;
diff --git a/mysql-test/main/pool_of_threads.test b/mysql-test/main/pool_of_threads.test
index cb62a27faeb..95b320e6dad 100644
--- a/mysql-test/main/pool_of_threads.test
+++ b/mysql-test/main/pool_of_threads.test
@@ -92,3 +92,9 @@ connection con2;
 
 connection extracon;
 --reap
+
+# Check if compression works OK
+connect (comp_con,localhost,root,,,,,COMPRESS);
+SELECT 1;
+disconnect comp_con;
+
diff --git a/mysql-test/main/range.result b/mysql-test/main/range.result
index a63f0ad5a8d..383c5b8fba0 100644
--- a/mysql-test/main/range.result
+++ b/mysql-test/main/range.result
@@ -1251,7 +1251,7 @@ SELECT * FROM t1 WHERE
 5 <= a AND b = 3 OR
 3 <= a;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	range	a	a	5	NULL	4	Using where; Using index
+1	SIMPLE	t1	range	a	a	5	NULL	3	Using where; Using index
 SELECT * FROM t1 WHERE
 3 <= a AND a <= 5 OR 
 5 <= a AND b = 3 OR
@@ -3033,5 +3033,77 @@ a	b
 set eq_range_index_dive_limit=default;
 drop table t1;
 #
+# MDEV-23811: Both disjunct of WHERE condition contain range conditions
+#             for the same index such that the second range condition
+#             fully covers the first one. Additionally one of the disjuncts
+#             contains a range condition for the other index.
+#
+create table t1 (
+pk int primary key auto_increment, a int, b int,
+index idx1(a), index idx2(b)
+);
+insert into t1(a,b) values
+(5,50), (1,10), (3,30), (7,70), (8,80), (4,40), (2,20), (6,60);
+insert into t1(a,b) select a+10, b+100 from t1;
+insert into t1(a,b) select a+20, b+200 from t1;
+insert into t1(a,b) select a+30, b+300 from t1;
+insert into t1(a,b) select a,b from t1;
+analyze table t1;
+Table	Op	Msg_type	Msg_text
+test.t1	analyze	status	OK
+explain select * from t1 where ((a between 3 and 4) and b < 100) or (a between 2 and 5);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	range	idx1,idx2	idx1	5	NULL	11	Using index condition; Using where
+select * from t1 where ((a between 3 and 4) and b < 100) or (a between 2 and 5);
+pk	a	b
+7	2	20
+71	2	20
+3	3	30
+67	3	30
+6	4	40
+70	4	40
+1	5	50
+65	5	50
+explain select * from t1 where (a between 2 and 5) or ((a between 3 and 4) and b < 100);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	range	idx1,idx2	idx1	5	NULL	11	Using index condition; Using where
+select * from t1 where (a between 2 and 5) or ((a between 3 and 4) and b < 100);
+pk	a	b
+7	2	20
+71	2	20
+3	3	30
+67	3	30
+6	4	40
+70	4	40
+1	5	50
+65	5	50
+explain select * from t1 where (a between 3 and 4) or ((a between 2 and 5) and b < 100);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	range	idx1,idx2	idx1	5	NULL	11	Using index condition; Using where
+select * from t1 where (a between 3 and 4) or ((a between 2 and 5) and b < 100);
+pk	a	b
+7	2	20
+71	2	20
+3	3	30
+67	3	30
+6	4	40
+70	4	40
+1	5	50
+65	5	50
+explain select * from t1 where ((a between 2 and 5) and b < 100) or (a between 3 and 4);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	range	idx1,idx2	idx1	5	NULL	11	Using index condition; Using where
+select * from t1 where ((a between 2 and 5) and b < 100) or (a between 3 and 4);
+pk	a	b
+7	2	20
+71	2	20
+3	3	30
+67	3	30
+6	4	40
+70	4	40
+1	5	50
+65	5	50
+drop table t1;
+#
 # End of 10.2 tests
 #
diff --git a/mysql-test/main/range.test b/mysql-test/main/range.test
index 21b20a5d87f..a6cc6e1805c 100644
--- a/mysql-test/main/range.test
+++ b/mysql-test/main/range.test
@@ -2068,5 +2068,47 @@ set eq_range_index_dive_limit=default;
 drop table t1;
 
 --echo #
+--echo # MDEV-23811: Both disjunct of WHERE condition contain range conditions
+--echo #             for the same index such that the second range condition
+--echo #             fully covers the first one. Additionally one of the disjuncts
+--echo #             contains a range condition for the other index.
+--echo #
+
+create table t1 (
+  pk int primary key auto_increment, a int, b int,
+  index idx1(a), index idx2(b)
+);
+insert into t1(a,b) values
+  (5,50), (1,10), (3,30), (7,70), (8,80), (4,40), (2,20), (6,60);
+insert into t1(a,b) select a+10, b+100 from t1;
+insert into t1(a,b) select a+20, b+200 from t1;
+insert into t1(a,b) select a+30, b+300 from t1;
+insert into t1(a,b) select a,b from t1;
+
+analyze table t1;
+
+let $q1=
+select * from t1 where ((a between 3 and 4) and b < 100) or (a between 2 and 5);
+eval explain $q1;
+eval $q1;
+
+let $q2=
+select * from t1 where (a between 2 and 5) or ((a between 3 and 4) and b < 100);
+eval explain $q2;
+eval $q2;
+
+let $q3=
+select * from t1 where (a between 3 and 4) or ((a between 2 and 5) and b < 100);
+eval explain $q3;
+eval $q3;
+
+let $q4=
+select * from t1 where ((a between 2 and 5) and b < 100) or (a between 3 and 4);
+eval explain $q4;
+eval $q4;
+
+drop table t1;
+
+--echo #
 --echo # End of 10.2 tests
 --echo #
diff --git a/mysql-test/main/range_mrr_icp.result b/mysql-test/main/range_mrr_icp.result
index ca4f6b83179..ae3de2d2697 100644
--- a/mysql-test/main/range_mrr_icp.result
+++ b/mysql-test/main/range_mrr_icp.result
@@ -1253,7 +1253,7 @@ SELECT * FROM t1 WHERE
 5 <= a AND b = 3 OR
 3 <= a;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	range	a	a	5	NULL	4	Using where; Using index
+1	SIMPLE	t1	range	a	a	5	NULL	3	Using where; Using index
 SELECT * FROM t1 WHERE
 3 <= a AND a <= 5 OR 
 5 <= a AND b = 3 OR
@@ -3045,6 +3045,78 @@ a	b
 set eq_range_index_dive_limit=default;
 drop table t1;
 #
+# MDEV-23811: Both disjunct of WHERE condition contain range conditions
+#             for the same index such that the second range condition
+#             fully covers the first one. Additionally one of the disjuncts
+#             contains a range condition for the other index.
+#
+create table t1 (
+pk int primary key auto_increment, a int, b int,
+index idx1(a), index idx2(b)
+);
+insert into t1(a,b) values
+(5,50), (1,10), (3,30), (7,70), (8,80), (4,40), (2,20), (6,60);
+insert into t1(a,b) select a+10, b+100 from t1;
+insert into t1(a,b) select a+20, b+200 from t1;
+insert into t1(a,b) select a+30, b+300 from t1;
+insert into t1(a,b) select a,b from t1;
+analyze table t1;
+Table	Op	Msg_type	Msg_text
+test.t1	analyze	status	OK
+explain select * from t1 where ((a between 3 and 4) and b < 100) or (a between 2 and 5);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	range	idx1,idx2	idx1	5	NULL	11	Using index condition; Using where; Rowid-ordered scan
+select * from t1 where ((a between 3 and 4) and b < 100) or (a between 2 and 5);
+pk	a	b
+1	5	50
+3	3	30
+6	4	40
+7	2	20
+65	5	50
+67	3	30
+70	4	40
+71	2	20
+explain select * from t1 where (a between 2 and 5) or ((a between 3 and 4) and b < 100);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	range	idx1,idx2	idx1	5	NULL	11	Using index condition; Using where; Rowid-ordered scan
+select * from t1 where (a between 2 and 5) or ((a between 3 and 4) and b < 100);
+pk	a	b
+1	5	50
+3	3	30
+6	4	40
+7	2	20
+65	5	50
+67	3	30
+70	4	40
+71	2	20
+explain select * from t1 where (a between 3 and 4) or ((a between 2 and 5) and b < 100);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	range	idx1,idx2	idx1	5	NULL	11	Using index condition; Using where; Rowid-ordered scan
+select * from t1 where (a between 3 and 4) or ((a between 2 and 5) and b < 100);
+pk	a	b
+1	5	50
+3	3	30
+6	4	40
+7	2	20
+65	5	50
+67	3	30
+70	4	40
+71	2	20
+explain select * from t1 where ((a between 2 and 5) and b < 100) or (a between 3 and 4);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	range	idx1,idx2	idx1	5	NULL	11	Using index condition; Using where; Rowid-ordered scan
+select * from t1 where ((a between 2 and 5) and b < 100) or (a between 3 and 4);
+pk	a	b
+1	5	50
+3	3	30
+6	4	40
+7	2	20
+65	5	50
+67	3	30
+70	4	40
+71	2	20
+drop table t1;
+#
 # End of 10.2 tests
 #
 set optimizer_switch=@mrr_icp_extra_tmp;
diff --git a/mysql-test/main/range_vs_index_merge_innodb.result b/mysql-test/main/range_vs_index_merge_innodb.result
index 581f512768c..916c30bb770 100644
--- a/mysql-test/main/range_vs_index_merge_innodb.result
+++ b/mysql-test/main/range_vs_index_merge_innodb.result
@@ -369,7 +369,7 @@ WHERE ((ID < 200) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG')))
 OR ((ID BETWEEN 100 AND 200) AND 
 (Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000)));
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	City	index_merge	PRIMARY,Population,Country,Name	Name,Population,PRIMARY	39,4,4	NULL	307	Using sort_union(Name,Population,PRIMARY); Using where
+1	SIMPLE	City	range	PRIMARY,Population,Country,Name	PRIMARY	4	NULL	200	Using where
 SELECT * FROM City USE INDEX ()
 WHERE ((ID < 10) AND (Name LIKE 'H%' OR (Country > 'A' AND Country < 'ARG')))
 OR ((ID BETWEEN 100 AND 110) AND 
diff --git a/mysql-test/main/sum_distinct-big.result b/mysql-test/main/sum_distinct-big.result
index 13e3e62fed2..08afa1dd1b0 100644
--- a/mysql-test/main/sum_distinct-big.result
+++ b/mysql-test/main/sum_distinct-big.result
@@ -3,27 +3,7 @@ set @save_max_heap_table_size=@@max_heap_table_size;
 set storage_engine=MYISAM;
 CREATE TABLE t1 (id INTEGER);
 CREATE TABLE t2 (id INTEGER);
-INSERT INTO t1 (id) VALUES (1), (1), (1),(1);
-INSERT INTO t1 (id) SELECT id FROM t1;
-/* 8 */
-INSERT INTO t1 (id) SELECT id FROM t1;
-/* 12 */
-INSERT INTO t1 (id) SELECT id FROM t1;
-/* 16 */
-INSERT INTO t1 (id) SELECT id FROM t1;
-/* 20 */
-INSERT INTO t1 (id) SELECT id FROM t1;
-/* 24 */
-INSERT INTO t1 SELECT id+1 FROM t1;
-INSERT INTO t1 SELECT id+2 FROM t1;
-INSERT INTO t1 SELECT id+4 FROM t1;
-INSERT INTO t1 SELECT id+8 FROM t1;
-INSERT INTO t1 SELECT id+16 FROM t1;
-INSERT INTO t1 SELECT id+32 FROM t1;
-INSERT INTO t1 SELECT id+64 FROM t1;
-INSERT INTO t1 SELECT id+128 FROM t1;
-INSERT INTO t1 SELECT id+256 FROM t1;
-INSERT INTO t1 SELECT id+512 FROM t1;
+INSERT INTO t1 SELECT b.seq FROM seq_1_to_128,seq_1_to_1024 b;
 SELECT AVG(DISTINCT id) FROM t1 GROUP BY id % 13;
 AVG(DISTINCT id)
 513.5000
@@ -54,11 +34,9 @@ SUM(DISTINCT id)/COUNT(DISTINCT id)
 517.0000
 511.5000
 512.5000
-INSERT INTO t1 SELECT id+1024 FROM t1;
-INSERT INTO t1 SELECT id+2048 FROM t1;
-INSERT INTO t1 SELECT id+4096 FROM t1;
-INSERT INTO t1 SELECT id+8192 FROM t1;
-INSERT INTO t2 SELECT id FROM t1 ORDER BY id*rand();
+INSERT INTO t1 SELECT b.seq FROM seq_1_to_128,seq_1025_to_16384 b;
+INSERT INTO t2 SELECT b.seq FROM seq_1_to_128 a,seq_1_to_16384 b
+ORDER by (a.seq*0+b.seq)*rand();
 SELECT SUM(DISTINCT id) sm FROM t1;
 sm
 134225920
@@ -110,9 +88,10 @@ sm
 # (bug #56927)
 # 
 SET max_heap_table_size=default;
-INSERT INTO t1 SELECT id+16384 FROM t1;
-DELETE FROM t2;
-INSERT INTO t2 SELECT id FROM t1 ORDER BY id*rand();
+INSERT INTO t1 SELECT b.seq FROM seq_1_to_128,seq_16385_to_32768 b;
+TRUNCATE t2;
+INSERT INTO t2 SELECT b.seq FROM seq_1_to_128 a,seq_1_to_32768 b
+ORDER BY (a.seq*0+b.seq)*rand();
 SELECT SUM(DISTINCT id) sm FROM t2;
 sm
 536887296
diff --git a/mysql-test/main/sum_distinct-big.test b/mysql-test/main/sum_distinct-big.test
index bc318bf624d..d87569f8668 100644
--- a/mysql-test/main/sum_distinct-big.test
+++ b/mysql-test/main/sum_distinct-big.test
@@ -19,32 +19,15 @@ set storage_engine=MYISAM;
 CREATE TABLE t1 (id INTEGER);
 CREATE TABLE t2 (id INTEGER);
 
-INSERT INTO t1 (id) VALUES (1), (1), (1),(1);
-INSERT INTO t1 (id) SELECT id FROM t1; /* 8 */
-INSERT INTO t1 (id) SELECT id FROM t1; /* 12 */
-INSERT INTO t1 (id) SELECT id FROM t1; /* 16 */
-INSERT INTO t1 (id) SELECT id FROM t1; /* 20 */
-INSERT INTO t1 (id) SELECT id FROM t1; /* 24 */
-INSERT INTO t1 SELECT id+1 FROM t1;
-INSERT INTO t1 SELECT id+2 FROM t1;
-INSERT INTO t1 SELECT id+4 FROM t1;
-INSERT INTO t1 SELECT id+8 FROM t1;
-INSERT INTO t1 SELECT id+16 FROM t1;
-INSERT INTO t1 SELECT id+32 FROM t1;
-INSERT INTO t1 SELECT id+64 FROM t1;
-INSERT INTO t1 SELECT id+128 FROM t1;
-INSERT INTO t1 SELECT id+256 FROM t1;
-INSERT INTO t1 SELECT id+512 FROM t1;
+INSERT INTO t1 SELECT b.seq FROM seq_1_to_128,seq_1_to_1024 b;
 
 # Just test that AVG(DISTINCT) is there
 SELECT AVG(DISTINCT id) FROM t1 GROUP BY id % 13;
 SELECT SUM(DISTINCT id)/COUNT(DISTINCT id) FROM t1 GROUP BY id % 13;
 
-INSERT INTO t1 SELECT id+1024 FROM t1;
-INSERT INTO t1 SELECT id+2048 FROM t1;
-INSERT INTO t1 SELECT id+4096 FROM t1;
-INSERT INTO t1 SELECT id+8192 FROM t1;
-INSERT INTO t2 SELECT id FROM t1 ORDER BY id*rand();
+INSERT INTO t1 SELECT b.seq FROM seq_1_to_128,seq_1025_to_16384 b;
+INSERT INTO t2 SELECT b.seq FROM seq_1_to_128 a,seq_1_to_16384 b
+ORDER by (a.seq*0+b.seq)*rand();
 
 # SELECT '++++++++++++++++++++++++++++++++++++++++++++++++++';
 
@@ -74,9 +57,10 @@ SELECT SUM(DISTINCT id) sm FROM t1 GROUP BY id % 13;
 
 SET max_heap_table_size=default;
 
-INSERT INTO t1 SELECT id+16384 FROM t1;
-DELETE FROM t2;
-INSERT INTO t2 SELECT id FROM t1 ORDER BY id*rand();
+INSERT INTO t1 SELECT b.seq FROM seq_1_to_128,seq_16385_to_32768 b;
+TRUNCATE t2;
+INSERT INTO t2 SELECT b.seq FROM seq_1_to_128 a,seq_1_to_32768 b
+ORDER BY (a.seq*0+b.seq)*rand();
 
 SELECT SUM(DISTINCT id) sm FROM t2;
 
diff --git a/mysql-test/main/udf.result b/mysql-test/main/udf.result
index 00361b40ca0..d875d7bb52c 100644
--- a/mysql-test/main/udf.result
+++ b/mysql-test/main/udf.result
@@ -479,3 +479,17 @@ myfunc_int(max(a) over (order by b) , b)
 drop view v1;
 drop function myfunc_int;
 drop table t1;
+#
+# MDEV-23327: Can't uninstall UDF if the implementation library
+# file doesn't exist
+#
+insert into  mysql.func values ("unexisting_udf", 0, "soname", "function");
+select * from mysql.func WHERE name='unexisting_udf';
+name	ret	dl	type
+unexisting_udf	0	soname	function
+DROP FUNCTION unexisting_udf;
+select * from mysql.plugin WHERE name='unexisting_udf';
+name	dl
+DROP FUNCTION unexisting_udf;
+ERROR 42000: FUNCTION test.unexisting_udf does not exist
+# End of 10.2 tests
diff --git a/mysql-test/main/udf.test b/mysql-test/main/udf.test
index d00335ca38d..9007ced0409 100644
--- a/mysql-test/main/udf.test
+++ b/mysql-test/main/udf.test
@@ -541,3 +541,25 @@ select * from v1;
 drop view v1;
 drop function myfunc_int;
 drop table t1;
+
+--echo #
+--echo # MDEV-23327: Can't uninstall UDF if the implementation library
+--echo # file doesn't exist
+--echo #
+
+# emulate brocken so/ddl udf
+insert into  mysql.func values ("unexisting_udf", 0, "soname", "function");
+
+# check that we have the function "installed"
+select * from mysql.func WHERE name='unexisting_udf';
+
+# make attempt to drop the function
+DROP FUNCTION unexisting_udf;
+
+# check that we have the plugin uninstalled
+select * from mysql.plugin WHERE name='unexisting_udf';
+
+--error ER_SP_DOES_NOT_EXIST
+DROP FUNCTION unexisting_udf;
+
+--echo # End of 10.2 tests
diff --git a/mysql-test/mysql-test-run.pl b/mysql-test/mysql-test-run.pl
index a6ab2cf807c..624d2675a79 100755
--- a/mysql-test/mysql-test-run.pl
+++ b/mysql-test/mysql-test-run.pl
@@ -1827,6 +1827,16 @@ sub command_line_setup {
     $opt_shutdown_timeout= 24 * 60;
     # One day for PID file creation (this is given in seconds not minutes)
     $opt_start_timeout= 24 * 60 * 60;
+    if ($opt_rr && open(my $fh, '<', '/proc/sys/kernel/perf_event_paranoid'))
+    {
+      my $perf_event_paranoid= <$fh>;
+      close $fh;
+      chomp $perf_event_paranoid;
+      if ($perf_event_paranoid == 0)
+      {
+        mtr_error("rr requires kernel.perf_event_paranoid set to 1");
+      }
+    }
   }
 
   # --------------------------------------------------------------------------
@@ -6553,7 +6563,7 @@ Options for debugging the product
   debug-server          Use debug version of server, but without turning on
                         tracing
   debugger=NAME         Start mysqld in the selected debugger
-  gdb                   Start the mysqld(s) in gdb
+  gdb[=gdb_arguments]   Start the mysqld(s) in gdb
   manual-debug          Let user manually start mysqld in debugger, before
                         running test(s)
   manual-gdb            Let user manually start mysqld in gdb, before running
diff --git a/mysql-test/std_data/mysql57user.MYD b/mysql-test/std_data/mysql57user.MYD
new file mode 100644
index 00000000000..0fe0eef8d2a
--- /dev/null
+++ b/mysql-test/std_data/mysql57user.MYD
diff --git a/mysql-test/std_data/mysql57user.MYI b/mysql-test/std_data/mysql57user.MYI
new file mode 100644
index 00000000000..16e9fa662a3
--- /dev/null
+++ b/mysql-test/std_data/mysql57user.MYI
diff --git a/mysql-test/std_data/mysql57user.frm b/mysql-test/std_data/mysql57user.frm
new file mode 100644
index 00000000000..2ae83ceb606
--- /dev/null
+++ b/mysql-test/std_data/mysql57user.frm
diff --git a/mysql-test/suite/binlog/r/binlog_recover_checksum_error.result b/mysql-test/suite/binlog/r/binlog_recover_checksum_error.result
new file mode 100644
index 00000000000..f65f7797d7f
--- /dev/null
+++ b/mysql-test/suite/binlog/r/binlog_recover_checksum_error.result
@@ -0,0 +1,7 @@
+set @@global.binlog_checksum = CRC32;
+call mtr.add_suppression("Replication event checksum verification failed");
+call mtr.add_suppression("Error in Log_event::read_log_event");
+set @@global.debug_dbug = VALUE;
+set @@global.master_verify_checksum = DO_CHECKSUM;
+set @@global.binlog_checksum = BINLOG_CHECKSUM;
+# EOF the test
diff --git a/mysql-test/suite/binlog/t/binlog_recover_checksum_error.test b/mysql-test/suite/binlog/t/binlog_recover_checksum_error.test
new file mode 100644
index 00000000000..12c9f3d914f
--- /dev/null
+++ b/mysql-test/suite/binlog/t/binlog_recover_checksum_error.test
@@ -0,0 +1,37 @@
+# The test verifies server binlog-based recovery.
+#
+# MDEV-23832 checksum error at server binlog recovery should not crash
+
+# The test logic really requires --log-bin.
+--source include/have_binlog_format_mixed.inc
+--source include/have_debug.inc
+
+--let $do_checksum = `SELECT @@global.master_verify_checksum`
+--let $debug_dbug_saved = `SELECT @@global.debug_dbug`
+--let $binlog_checksum = `SELECT @@global.binlog_checksum`
+set @@global.binlog_checksum = CRC32;
+
+call mtr.add_suppression("Replication event checksum verification failed");
+call mtr.add_suppression("Error in Log_event::read_log_event");
+
+# Proof of no crash follows.
+# There's no need for actual bin-loggable queries to the server
+--let $restart_parameters=  --master_verify_checksum=ON --debug_dbug="+d,corrupt_read_log_event_char"
+--let $shutdown_timeout=0
+--source include/restart_mysqld.inc
+--let $restart_parameters=
+--let $shutdown_timeout=
+
+#
+# Cleanup
+
+--replace_regex /= .*/= VALUE/
+--eval set @@global.debug_dbug = "$debug_dbug_saved"
+
+--replace_result $do_checksum DO_CHECKSUM
+--eval set @@global.master_verify_checksum = $do_checksum
+--replace_result $binlog_checksum BINLOG_CHECKSUM
+--eval set @@global.binlog_checksum = $binlog_checksum
+#
+--echo # EOF the test
+#
diff --git a/mysql-test/suite/encryption/r/innodb-page_encryption_compression.result b/mysql-test/suite/encryption/r/innodb-page_encryption_compression.result
index 808345ab4ca..e8e88a1e41f 100644
--- a/mysql-test/suite/encryption/r/innodb-page_encryption_compression.result
+++ b/mysql-test/suite/encryption/r/innodb-page_encryption_compression.result
@@ -41,6 +41,14 @@ call innodb_insert_proc(2000);
 insert into innodb_compact select * from innodb_normal;
 insert into innodb_dynamic select * from innodb_normal;
 commit;
+FLUSH TABLES innodb_compact FOR EXPORT;
+UNLOCK TABLES;
+FLUSH TABLES innodb_dynamic FOR EXPORT;
+UNLOCK TABLES;
+select variable_value > 0 from information_schema.global_status
+where variable_name = 'INNODB_NUM_PAGES_PAGE_COMPRESSED';
+variable_value > 0
+1
 set global innodb_compression_algorithm = 1;
 alter table innodb_normal engine=innodb page_compressed=DEFAULT;
 show create table innodb_normal;
@@ -63,6 +71,16 @@ innodb_dynamic	CREATE TABLE `innodb_dynamic` (
   `c1` bigint(20) NOT NULL,
   `b` char(200) DEFAULT NULL
 ) ENGINE=InnoDB DEFAULT CHARSET=latin1 ROW_FORMAT=DYNAMIC
+FLUSH TABLES innodb_normal FOR EXPORT;
+UNLOCK TABLES;
+FLUSH TABLES innodb_compact FOR EXPORT;
+UNLOCK TABLES;
+FLUSH TABLES innodb_dynamic FOR EXPORT;
+UNLOCK TABLES;
+select variable_value > 0 from information_schema.global_status
+where variable_name = 'INNODB_NUM_PAGES_PAGE_DECOMPRESSED';
+variable_value > 0
+1
 drop procedure innodb_insert_proc;
 drop table innodb_normal;
 drop table innodb_compact;
diff --git a/mysql-test/suite/encryption/r/innodb-page_encryption_log_encryption.result b/mysql-test/suite/encryption/r/innodb-page_encryption_log_encryption.result
index 189be75b83f..a550b6b01b3 100644
--- a/mysql-test/suite/encryption/r/innodb-page_encryption_log_encryption.result
+++ b/mysql-test/suite/encryption/r/innodb-page_encryption_log_encryption.result
@@ -37,40 +37,43 @@ innodb_redundant	CREATE TABLE `innodb_redundant` (
   `c1` bigint(20) NOT NULL,
   `b` char(200) DEFAULT NULL
 ) ENGINE=InnoDB DEFAULT CHARSET=latin1 ROW_FORMAT=REDUNDANT `encrypted`=yes `encryption_key_id`=4
-create procedure innodb_insert_proc (repeat_count int)
-begin
-declare current_num int;
-set current_num = 0;
-while current_num < repeat_count do
-insert into innodb_normal values(current_num, substring(MD5(RAND()), -64));
-set current_num = current_num + 1;
-end while;
-end//
-commit;
-begin;
-call innodb_insert_proc(2000);
-insert into innodb_compact select * from innodb_normal;
-insert into innodb_compressed select * from innodb_normal;
-insert into innodb_dynamic select * from innodb_normal;
-insert into innodb_redundant select * from innodb_normal;
-commit;
-SELECT variable_value > 0 FROM information_schema.global_status WHERE variable_name = 'innodb_num_pages_encrypted';
-variable_value > 0
-1
-SELECT variable_value >= 0 FROM information_schema.global_status WHERE variable_name = 'innodb_num_pages_decrypted';
-variable_value >= 0
-1
-update innodb_normal set c1 = c1 +1;
-update innodb_compact set c1 = c1 + 1;
-update innodb_compressed set c1 = c1 + 1;
-update innodb_dynamic set c1 = c1 + 1;
-update innodb_redundant set c1 = c1 + 1;
-SELECT variable_value > 0 FROM information_schema.global_status WHERE variable_name = 'innodb_num_pages_encrypted';
-variable_value > 0
-1
-SELECT variable_value > 0 FROM information_schema.global_status WHERE variable_name = 'innodb_num_pages_decrypted';
+FLUSH TABLES innodb_normal FOR EXPORT;
+UNLOCK TABLES;
+FLUSH TABLES innodb_compact FOR EXPORT;
+UNLOCK TABLES;
+FLUSH TABLES innodb_compressed FOR EXPORT;
+UNLOCK TABLES;
+FLUSH TABLES innodb_dynamic FOR EXPORT;
+UNLOCK TABLES;
+FLUSH TABLES innodb_redundant FOR EXPORT;
+UNLOCK TABLES;
+select variable_value > 0 from information_schema.global_status
+where variable_name = 'INNODB_NUM_PAGES_ENCRYPTED';
 variable_value > 0
 1
+BEGIN;
+INSERT INTO innodb_normal SET c1 = 1;
+INSERT INTO innodb_compact SET c1 = 1;
+INSERT INTO innodb_compressed SET c1 = 1;
+INSERT INTO innodb_dynamic SET c1 = 1;
+INSERT INTO innodb_redundant SET c1 = 1;
+COMMIT;
+FLUSH TABLES innodb_normal FOR EXPORT;
+UNLOCK TABLES;
+FLUSH TABLES innodb_compact FOR EXPORT;
+UNLOCK TABLES;
+FLUSH TABLES innodb_compressed FOR EXPORT;
+UNLOCK TABLES;
+FLUSH TABLES innodb_dynamic FOR EXPORT;
+UNLOCK TABLES;
+FLUSH TABLES innodb_redundant FOR EXPORT;
+UNLOCK TABLES;
+select variable_name from information_schema.global_status
+where variable_value > 0 and variable_name
+IN ('INNODB_NUM_PAGES_ENCRYPTED','INNODB_NUM_PAGES_DECRYPTED');
+variable_name
+INNODB_NUM_PAGES_ENCRYPTED
+INNODB_NUM_PAGES_DECRYPTED
 SET GLOBAL innodb_encrypt_tables=OFF;
 alter table innodb_compact engine=innodb encrypted=DEFAULT encryption_key_id=DEFAULT;
 show create table innodb_compact;
@@ -100,13 +103,16 @@ innodb_redundant	CREATE TABLE `innodb_redundant` (
   `c1` bigint(20) NOT NULL,
   `b` char(200) DEFAULT NULL
 ) ENGINE=InnoDB DEFAULT CHARSET=latin1 ROW_FORMAT=REDUNDANT
-SELECT variable_value >= 0 FROM information_schema.global_status WHERE variable_name = 'innodb_num_pages_encrypted';
-variable_value >= 0
-1
-SELECT variable_value >= 0 FROM information_schema.global_status WHERE variable_name = 'innodb_num_pages_decrypted';
-variable_value >= 0
-1
-drop procedure innodb_insert_proc;
+FLUSH TABLES innodb_normal FOR EXPORT;
+UNLOCK TABLES;
+FLUSH TABLES innodb_compact FOR EXPORT;
+UNLOCK TABLES;
+FLUSH TABLES innodb_compressed FOR EXPORT;
+UNLOCK TABLES;
+FLUSH TABLES innodb_dynamic FOR EXPORT;
+UNLOCK TABLES;
+FLUSH TABLES innodb_redundant FOR EXPORT;
+UNLOCK TABLES;
 drop table innodb_normal;
 drop table innodb_compact;
 drop table innodb_compressed;
diff --git a/mysql-test/suite/encryption/t/innodb-page_encryption_compression.test b/mysql-test/suite/encryption/t/innodb-page_encryption_compression.test
index d902fa38508..5fe6f686576 100644
--- a/mysql-test/suite/encryption/t/innodb-page_encryption_compression.test
+++ b/mysql-test/suite/encryption/t/innodb-page_encryption_compression.test
@@ -37,8 +37,10 @@ insert into innodb_compact select * from innodb_normal;
 insert into innodb_dynamic select * from innodb_normal;
 commit;
 
-let $wait_condition= select variable_value > 0 from information_schema.global_status where variable_name = 'INNODB_NUM_PAGES_PAGE_COMPRESSED';
---source include/wait_condition.inc
+FLUSH TABLES innodb_compact FOR EXPORT; UNLOCK TABLES;
+FLUSH TABLES innodb_dynamic FOR EXPORT; UNLOCK TABLES;
+select variable_value > 0 from information_schema.global_status
+where variable_name = 'INNODB_NUM_PAGES_PAGE_COMPRESSED';
 
 --let $restart_parameters=--innodb-encrypt-tables=OFF
 --source include/restart_mysqld.inc
@@ -52,8 +54,13 @@ alter table innodb_compact engine=innodb encrypted=DEFAULT encryption_key_id=DEF
 show create table innodb_compact;
 alter table innodb_dynamic engine=innodb encrypted=DEFAULT encryption_key_id=DEFAULT page_compressed=DEFAULT;
 show create table innodb_dynamic;
-let $wait_condition= select variable_value > 0 from information_schema.global_status where variable_name = 'INNODB_NUM_PAGES_PAGE_DECOMPRESSED';
---source include/wait_condition.inc
+
+FLUSH TABLES innodb_normal FOR EXPORT; UNLOCK TABLES;
+FLUSH TABLES innodb_compact FOR EXPORT; UNLOCK TABLES;
+FLUSH TABLES innodb_dynamic FOR EXPORT; UNLOCK TABLES;
+
+select variable_value > 0 from information_schema.global_status
+where variable_name = 'INNODB_NUM_PAGES_PAGE_DECOMPRESSED';
 
 drop procedure innodb_insert_proc;
 drop table innodb_normal;
diff --git a/mysql-test/suite/encryption/t/innodb-page_encryption_log_encryption.test b/mysql-test/suite/encryption/t/innodb-page_encryption_log_encryption.test
index 5b472094653..a736c7292ad 100644
--- a/mysql-test/suite/encryption/t/innodb-page_encryption_log_encryption.test
+++ b/mysql-test/suite/encryption/t/innodb-page_encryption_log_encryption.test
@@ -18,47 +18,34 @@ show create table innodb_compressed;
 show create table innodb_dynamic;
 show create table innodb_redundant;
 
-delimiter //;
-create procedure innodb_insert_proc (repeat_count int)
-begin
-  declare current_num int;
-  set current_num = 0;
-  while current_num < repeat_count do
-    insert into innodb_normal values(current_num, substring(MD5(RAND()), -64));
-    set current_num = current_num + 1;
-  end while;
-end//
-delimiter ;//
-commit;
+FLUSH TABLES innodb_normal FOR EXPORT; UNLOCK TABLES;
+FLUSH TABLES innodb_compact FOR EXPORT; UNLOCK TABLES;
+FLUSH TABLES innodb_compressed FOR EXPORT; UNLOCK TABLES;
+FLUSH TABLES innodb_dynamic FOR EXPORT; UNLOCK TABLES;
+FLUSH TABLES innodb_redundant FOR EXPORT; UNLOCK TABLES;
 
-begin;
-call innodb_insert_proc(2000);
-insert into innodb_compact select * from innodb_normal;
-insert into innodb_compressed select * from innodb_normal;
-insert into innodb_dynamic select * from innodb_normal;
-insert into innodb_redundant select * from innodb_normal;
-commit;
-
-let $wait_condition= select variable_value > 0 from information_schema.global_status where variable_name = 'INNODB_NUM_PAGES_ENCRYPTED';
---source include/wait_condition.inc
-
-# Note there that these variables are updated only when real I/O is done, thus they are not reliable
-SELECT variable_value > 0 FROM information_schema.global_status WHERE variable_name = 'innodb_num_pages_encrypted';
-SELECT variable_value >= 0 FROM information_schema.global_status WHERE variable_name = 'innodb_num_pages_decrypted';
+select variable_value > 0 from information_schema.global_status
+where variable_name = 'INNODB_NUM_PAGES_ENCRYPTED';
 
 --source include/restart_mysqld.inc
 
-update innodb_normal set c1 = c1 +1;
-update innodb_compact set c1 = c1 + 1;
-update innodb_compressed set c1 = c1 + 1;
-update innodb_dynamic set c1 = c1 + 1;
-update innodb_redundant set c1 = c1 + 1;
+BEGIN;
+INSERT INTO innodb_normal SET c1 = 1;
+INSERT INTO innodb_compact SET c1 = 1;
+INSERT INTO innodb_compressed SET c1 = 1;
+INSERT INTO innodb_dynamic SET c1 = 1;
+INSERT INTO innodb_redundant SET c1 = 1;
+COMMIT;
 
-let $wait_condition= select variable_value > 0 from information_schema.global_status where variable_name = 'INNODB_NUM_PAGES_ENCRYPTED';
---source include/wait_condition.inc
+FLUSH TABLES innodb_normal FOR EXPORT; UNLOCK TABLES;
+FLUSH TABLES innodb_compact FOR EXPORT; UNLOCK TABLES;
+FLUSH TABLES innodb_compressed FOR EXPORT; UNLOCK TABLES;
+FLUSH TABLES innodb_dynamic FOR EXPORT; UNLOCK TABLES;
+FLUSH TABLES innodb_redundant FOR EXPORT; UNLOCK TABLES;
 
-SELECT variable_value > 0 FROM information_schema.global_status WHERE variable_name = 'innodb_num_pages_encrypted';
-SELECT variable_value > 0 FROM information_schema.global_status WHERE variable_name = 'innodb_num_pages_decrypted';
+select variable_name from information_schema.global_status
+where variable_value > 0 and variable_name
+IN ('INNODB_NUM_PAGES_ENCRYPTED','INNODB_NUM_PAGES_DECRYPTED');
 
 SET GLOBAL innodb_encrypt_tables=OFF;
 alter table innodb_compact engine=innodb encrypted=DEFAULT encryption_key_id=DEFAULT;
@@ -70,13 +57,12 @@ show create table innodb_dynamic;
 alter table innodb_redundant engine=innodb encrypted=DEFAULT encryption_key_id=DEFAULT;
 show create table innodb_redundant;
 
-let $wait_condition= select variable_value > 0 from information_schema.global_status where variable_name = 'INNODB_NUM_PAGES_DECRYPTED';
---source include/wait_condition.inc
-
-SELECT variable_value >= 0 FROM information_schema.global_status WHERE variable_name = 'innodb_num_pages_encrypted';
-SELECT variable_value >= 0 FROM information_schema.global_status WHERE variable_name = 'innodb_num_pages_decrypted';
+FLUSH TABLES innodb_normal FOR EXPORT; UNLOCK TABLES;
+FLUSH TABLES innodb_compact FOR EXPORT; UNLOCK TABLES;
+FLUSH TABLES innodb_compressed FOR EXPORT; UNLOCK TABLES;
+FLUSH TABLES innodb_dynamic FOR EXPORT; UNLOCK TABLES;
+FLUSH TABLES innodb_redundant FOR EXPORT; UNLOCK TABLES;
 
-drop procedure innodb_insert_proc;
 drop table innodb_normal;
 drop table innodb_compact;
 drop table innodb_compressed;
diff --git a/mysql-test/suite/funcs_1/r/is_routines_embedded.result b/mysql-test/suite/funcs_1/r/is_routines_embedded.result
index ec68057eaa1..56c6d9c569e 100644
--- a/mysql-test/suite/funcs_1/r/is_routines_embedded.result
+++ b/mysql-test/suite/funcs_1/r/is_routines_embedded.result
@@ -197,7 +197,7 @@ sp_6_408002_2	def	db_datadict_2	sp_6_408002_2	PROCEDURE		NULL	NULL	NULL	NULL	NUL
 SELECT * FROM db_datadict_2.res_6_408002_2;
 END	NULL	NULL	SQL	NO	CONTAINS SQL	NULL	DEFINER	YYYY-MM-DD hh:mm:ss	YYYY-MM-DD hh:mm:ss			root@localhost	latin1	latin1_swedish_ci	latin1_swedish_ci
 add_suppression	def	mtr	add_suppression	PROCEDURE		NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	SQL	BEGIN   INSERT INTO test_suppressions (pattern) VALUES (pattern);   FLUSH NO_WRITE_TO_BINLOG TABLE test_suppressions; END	NULL	NULL	SQL	NO	CONTAINS SQL	NULL	DEFINER	YYYY-MM-DD hh:mm:ss	YYYY-MM-DD hh:mm:ss			root@localhost	utf8	utf8_general_ci	latin1_swedish_ci
-check_testcase	def	mtr	check_testcase	PROCEDURE		NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	SQL	BEGIN    SELECT * FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES     WHERE variable_name NOT IN ('timestamp')      AND variable_name not like "Last_IO_Err*"      AND variable_name != 'INNODB_IBUF_MAX_SIZE'      AND variable_name != 'INNODB_USE_NATIVE_AIO'      AND variable_name != 'INNODB_BUFFER_POOL_LOAD_AT_STARTUP'      AND variable_name not like 'GTID%POS'      AND variable_name != 'GTID_BINLOG_STATE'    ORDER BY variable_name;    SELECT * FROM INFORMATION_SCHEMA.SCHEMATA ORDER BY BINARY SCHEMA_NAME;    SELECT * FROM INFORMATION_SCHEMA.SCHEMATA     WHERE SCHEMA_NAME NOT IN ('mtr_wsrep_notify', 'wsrep_schema')     ORDER BY BINARY SCHEMA_NAME;    SELECT table_name AS tables_in_test FROM INFORMATION_SCHEMA.TABLES     WHERE table_schema='test';    SELECT CONCAT(table_schema, '.', table_name) AS tables_in_mysql     FROM INFORMATION_SCHEMA.TABLES       WHERE table_schema='mysql'         ORDER BY tables_in_mysql;   SELECT CONCAT(table_schema, '.', table_name) AS columns_in_mysql,   	 column_name, ordinal_position, column_default, is_nullable,          data_type, character_maximum_length, character_octet_length,          numeric_precision, numeric_scale, character_set_name,          collation_name, column_type, column_key, extra, column_comment     FROM INFORMATION_SCHEMA.COLUMNS       WHERE table_schema='mysql'         ORDER BY columns_in_mysql;    SELECT * FROM INFORMATION_SCHEMA.EVENTS;   SELECT * FROM INFORMATION_SCHEMA.TRIGGERS          WHERE TRIGGER_NAME NOT IN ('gs_insert', 'ts_insert');   SELECT * FROM INFORMATION_SCHEMA.ROUTINES;    SHOW STATUS LIKE 'slave_open_temp_tables';    checksum table     mysql.columns_priv,     mysql.db,     mysql.func,     mysql.help_category,     mysql.help_keyword,     mysql.help_relation,     mysql.host,     mysql.plugin,     mysql.proc,     mysql.procs_priv,     mysql.roles_mapping,     mysql.tables_priv,     mysql.time_zone,     mysql.time_zone_leap_second,     mysql.time_zone_name,     mysql.time_zone_transition,     mysql.time_zone_transition_type,     mysql.user;    SELECT * FROM INFORMATION_SCHEMA.PLUGINS;    select * from information_schema.session_variables     where variable_name = 'debug_sync';  END	NULL	NULL	SQL	NO	CONTAINS SQL	NULL	DEFINER	YYYY-MM-DD hh:mm:ss	YYYY-MM-DD hh:mm:ss			root@localhost	utf8	utf8_general_ci	latin1_swedish_ci
+check_testcase	def	mtr	check_testcase	PROCEDURE		NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	SQL	BEGIN    SELECT * FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES     WHERE variable_name NOT IN ('timestamp')      AND variable_name not like "Last_IO_Err*"      AND variable_name != 'INNODB_IBUF_MAX_SIZE'      AND variable_name != 'INNODB_USE_NATIVE_AIO'      AND variable_name != 'INNODB_BUFFER_POOL_LOAD_AT_STARTUP'      AND variable_name not like 'GTID%POS'      AND variable_name != 'GTID_BINLOG_STATE'      AND variable_name != 'THREAD_POOL_SIZE'    ORDER BY variable_name;    SELECT * FROM INFORMATION_SCHEMA.SCHEMATA ORDER BY BINARY SCHEMA_NAME;    SELECT * FROM INFORMATION_SCHEMA.SCHEMATA     WHERE SCHEMA_NAME NOT IN ('mtr_wsrep_notify', 'wsrep_schema')     ORDER BY BINARY SCHEMA_NAME;    SELECT table_name AS tables_in_test FROM INFORMATION_SCHEMA.TABLES     WHERE table_schema='test';    SELECT CONCAT(table_schema, '.', table_name) AS tables_in_mysql     FROM INFORMATION_SCHEMA.TABLES       WHERE table_schema='mysql'         ORDER BY tables_in_mysql;   SELECT CONCAT(table_schema, '.', table_name) AS columns_in_mysql,   	 column_name, ordinal_position, column_default, is_nullable,          data_type, character_maximum_length, character_octet_length,          numeric_precision, numeric_scale, character_set_name,          collation_name, column_type, column_key, extra, column_comment     FROM INFORMATION_SCHEMA.COLUMNS       WHERE table_schema='mysql'         ORDER BY columns_in_mysql;    SELECT * FROM INFORMATION_SCHEMA.EVENTS;   SELECT * FROM INFORMATION_SCHEMA.TRIGGERS          WHERE TRIGGER_NAME NOT IN ('gs_insert', 'ts_insert');   SELECT * FROM INFORMATION_SCHEMA.ROUTINES;    SHOW STATUS LIKE 'slave_open_temp_tables';    checksum table     mysql.columns_priv,     mysql.db,     mysql.func,     mysql.help_category,     mysql.help_keyword,     mysql.help_relation,     mysql.host,     mysql.plugin,     mysql.proc,     mysql.procs_priv,     mysql.roles_mapping,     mysql.tables_priv,     mysql.time_zone,     mysql.time_zone_leap_second,     mysql.time_zone_name,     mysql.time_zone_transition,     mysql.time_zone_transition_type,     mysql.user;    SELECT * FROM INFORMATION_SCHEMA.PLUGINS;    select * from information_schema.session_variables     where variable_name = 'debug_sync';  END	NULL	NULL	SQL	NO	CONTAINS SQL	NULL	DEFINER	YYYY-MM-DD hh:mm:ss	YYYY-MM-DD hh:mm:ss			root@localhost	utf8	utf8_general_ci	latin1_swedish_ci
 check_warnings	def	mtr	check_warnings	PROCEDURE		NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	SQL	BEGIN   DECLARE `pos` bigint unsigned;    SET SQL_LOG_BIN=0, SQL_SAFE_UPDATES=0;    UPDATE error_log el, global_suppressions gs     SET suspicious=0       WHERE el.suspicious=1 AND el.line REGEXP gs.pattern;    UPDATE error_log el, test_suppressions ts     SET suspicious=0       WHERE el.suspicious=1 AND el.line REGEXP ts.pattern;    SELECT COUNT(*) INTO @num_warnings FROM error_log     WHERE suspicious=1;    IF @num_warnings > 0 THEN     SELECT line         FROM error_log WHERE suspicious=1;     SELECT 2 INTO result;   ELSE     SELECT 0 INTO RESULT;   END IF;    TRUNCATE test_suppressions;   DROP TABLE error_log;  END	NULL	NULL	SQL	NO	CONTAINS SQL	NULL	DEFINER	YYYY-MM-DD hh:mm:ss	YYYY-MM-DD hh:mm:ss			root@localhost	utf8	utf8_general_ci	latin1_swedish_ci
 AddGeometryColumn	def	mysql	AddGeometryColumn	PROCEDURE		NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	SQL	begin
   set @qwe= concat('ALTER TABLE ', t_schema, '.', t_name, ' ADD ', geometry_column,' GEOMETRY REF_SYSTEM_ID=', t_srid); PREPARE ls from @qwe; execute ls; deallocate prepare ls; end	NULL	NULL	SQL	NO	CONTAINS SQL	NULL	INVOKER	YYYY-MM-DD hh:mm:ss	YYYY-MM-DD hh:mm:ss			root@localhost	latin1	latin1_swedish_ci	latin1_swedish_ci
@@ -213,7 +213,7 @@ sp_6_408002_2	def	db_datadict_2	sp_6_408002_2	PROCEDURE		NULL	NULL	NULL	NULL	NUL
 SELECT * FROM db_datadict_2.res_6_408002_2;
 END	NULL	NULL	SQL	NO	CONTAINS SQL	NULL	DEFINER	YYYY-MM-DD hh:mm:ss	YYYY-MM-DD hh:mm:ss			root@localhost	latin1	latin1_swedish_ci	latin1_swedish_ci
 add_suppression	def	mtr	add_suppression	PROCEDURE		NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	SQL	BEGIN   INSERT INTO test_suppressions (pattern) VALUES (pattern);   FLUSH NO_WRITE_TO_BINLOG TABLE test_suppressions; END	NULL	NULL	SQL	NO	CONTAINS SQL	NULL	DEFINER	YYYY-MM-DD hh:mm:ss	YYYY-MM-DD hh:mm:ss			root@localhost	utf8	utf8_general_ci	latin1_swedish_ci
-check_testcase	def	mtr	check_testcase	PROCEDURE		NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	SQL	BEGIN    SELECT * FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES     WHERE variable_name NOT IN ('timestamp')      AND variable_name not like "Last_IO_Err*"      AND variable_name != 'INNODB_IBUF_MAX_SIZE'      AND variable_name != 'INNODB_USE_NATIVE_AIO'      AND variable_name != 'INNODB_BUFFER_POOL_LOAD_AT_STARTUP'      AND variable_name not like 'GTID%POS'      AND variable_name != 'GTID_BINLOG_STATE'    ORDER BY variable_name;    SELECT * FROM INFORMATION_SCHEMA.SCHEMATA ORDER BY BINARY SCHEMA_NAME;    SELECT * FROM INFORMATION_SCHEMA.SCHEMATA     WHERE SCHEMA_NAME NOT IN ('mtr_wsrep_notify', 'wsrep_schema')     ORDER BY BINARY SCHEMA_NAME;    SELECT table_name AS tables_in_test FROM INFORMATION_SCHEMA.TABLES     WHERE table_schema='test';    SELECT CONCAT(table_schema, '.', table_name) AS tables_in_mysql     FROM INFORMATION_SCHEMA.TABLES       WHERE table_schema='mysql'         ORDER BY tables_in_mysql;   SELECT CONCAT(table_schema, '.', table_name) AS columns_in_mysql,   	 column_name, ordinal_position, column_default, is_nullable,          data_type, character_maximum_length, character_octet_length,          numeric_precision, numeric_scale, character_set_name,          collation_name, column_type, column_key, extra, column_comment     FROM INFORMATION_SCHEMA.COLUMNS       WHERE table_schema='mysql'         ORDER BY columns_in_mysql;    SELECT * FROM INFORMATION_SCHEMA.EVENTS;   SELECT * FROM INFORMATION_SCHEMA.TRIGGERS          WHERE TRIGGER_NAME NOT IN ('gs_insert', 'ts_insert');   SELECT * FROM INFORMATION_SCHEMA.ROUTINES;    SHOW STATUS LIKE 'slave_open_temp_tables';    checksum table     mysql.columns_priv,     mysql.db,     mysql.func,     mysql.help_category,     mysql.help_keyword,     mysql.help_relation,     mysql.host,     mysql.plugin,     mysql.proc,     mysql.procs_priv,     mysql.roles_mapping,     mysql.tables_priv,     mysql.time_zone,     mysql.time_zone_leap_second,     mysql.time_zone_name,     mysql.time_zone_transition,     mysql.time_zone_transition_type,     mysql.user;    SELECT * FROM INFORMATION_SCHEMA.PLUGINS;    select * from information_schema.session_variables     where variable_name = 'debug_sync';  END	NULL	NULL	SQL	NO	CONTAINS SQL	NULL	DEFINER	YYYY-MM-DD hh:mm:ss	YYYY-MM-DD hh:mm:ss			root@localhost	utf8	utf8_general_ci	latin1_swedish_ci
+check_testcase	def	mtr	check_testcase	PROCEDURE		NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	SQL	BEGIN    SELECT * FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES     WHERE variable_name NOT IN ('timestamp')      AND variable_name not like "Last_IO_Err*"      AND variable_name != 'INNODB_IBUF_MAX_SIZE'      AND variable_name != 'INNODB_USE_NATIVE_AIO'      AND variable_name != 'INNODB_BUFFER_POOL_LOAD_AT_STARTUP'      AND variable_name not like 'GTID%POS'      AND variable_name != 'GTID_BINLOG_STATE'      AND variable_name != 'THREAD_POOL_SIZE'    ORDER BY variable_name;    SELECT * FROM INFORMATION_SCHEMA.SCHEMATA ORDER BY BINARY SCHEMA_NAME;    SELECT * FROM INFORMATION_SCHEMA.SCHEMATA     WHERE SCHEMA_NAME NOT IN ('mtr_wsrep_notify', 'wsrep_schema')     ORDER BY BINARY SCHEMA_NAME;    SELECT table_name AS tables_in_test FROM INFORMATION_SCHEMA.TABLES     WHERE table_schema='test';    SELECT CONCAT(table_schema, '.', table_name) AS tables_in_mysql     FROM INFORMATION_SCHEMA.TABLES       WHERE table_schema='mysql'         ORDER BY tables_in_mysql;   SELECT CONCAT(table_schema, '.', table_name) AS columns_in_mysql,   	 column_name, ordinal_position, column_default, is_nullable,          data_type, character_maximum_length, character_octet_length,          numeric_precision, numeric_scale, character_set_name,          collation_name, column_type, column_key, extra, column_comment     FROM INFORMATION_SCHEMA.COLUMNS       WHERE table_schema='mysql'         ORDER BY columns_in_mysql;    SELECT * FROM INFORMATION_SCHEMA.EVENTS;   SELECT * FROM INFORMATION_SCHEMA.TRIGGERS          WHERE TRIGGER_NAME NOT IN ('gs_insert', 'ts_insert');   SELECT * FROM INFORMATION_SCHEMA.ROUTINES;    SHOW STATUS LIKE 'slave_open_temp_tables';    checksum table     mysql.columns_priv,     mysql.db,     mysql.func,     mysql.help_category,     mysql.help_keyword,     mysql.help_relation,     mysql.host,     mysql.plugin,     mysql.proc,     mysql.procs_priv,     mysql.roles_mapping,     mysql.tables_priv,     mysql.time_zone,     mysql.time_zone_leap_second,     mysql.time_zone_name,     mysql.time_zone_transition,     mysql.time_zone_transition_type,     mysql.user;    SELECT * FROM INFORMATION_SCHEMA.PLUGINS;    select * from information_schema.session_variables     where variable_name = 'debug_sync';  END	NULL	NULL	SQL	NO	CONTAINS SQL	NULL	DEFINER	YYYY-MM-DD hh:mm:ss	YYYY-MM-DD hh:mm:ss			root@localhost	utf8	utf8_general_ci	latin1_swedish_ci
 check_warnings	def	mtr	check_warnings	PROCEDURE		NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	SQL	BEGIN   DECLARE `pos` bigint unsigned;    SET SQL_LOG_BIN=0, SQL_SAFE_UPDATES=0;    UPDATE error_log el, global_suppressions gs     SET suspicious=0       WHERE el.suspicious=1 AND el.line REGEXP gs.pattern;    UPDATE error_log el, test_suppressions ts     SET suspicious=0       WHERE el.suspicious=1 AND el.line REGEXP ts.pattern;    SELECT COUNT(*) INTO @num_warnings FROM error_log     WHERE suspicious=1;    IF @num_warnings > 0 THEN     SELECT line         FROM error_log WHERE suspicious=1;     SELECT 2 INTO result;   ELSE     SELECT 0 INTO RESULT;   END IF;    TRUNCATE test_suppressions;   DROP TABLE error_log;  END	NULL	NULL	SQL	NO	CONTAINS SQL	NULL	DEFINER	YYYY-MM-DD hh:mm:ss	YYYY-MM-DD hh:mm:ss			root@localhost	utf8	utf8_general_ci	latin1_swedish_ci
 AddGeometryColumn	def	mysql	AddGeometryColumn	PROCEDURE		NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	SQL	begin
   set @qwe= concat('ALTER TABLE ', t_schema, '.', t_name, ' ADD ', geometry_column,' GEOMETRY REF_SYSTEM_ID=', t_srid); PREPARE ls from @qwe; execute ls; deallocate prepare ls; end	NULL	NULL	SQL	NO	CONTAINS SQL	NULL	INVOKER	YYYY-MM-DD hh:mm:ss	YYYY-MM-DD hh:mm:ss			root@localhost	latin1	latin1_swedish_ci	latin1_swedish_ci
@@ -229,7 +229,7 @@ sp_6_408002_2	def	db_datadict_2	sp_6_408002_2	PROCEDURE		NULL	NULL	NULL	NULL	NUL
 SELECT * FROM db_datadict_2.res_6_408002_2;
 END	NULL	NULL	SQL	NO	CONTAINS SQL	NULL	DEFINER	YYYY-MM-DD hh:mm:ss	YYYY-MM-DD hh:mm:ss			root@localhost	latin1	latin1_swedish_ci	latin1_swedish_ci
 add_suppression	def	mtr	add_suppression	PROCEDURE		NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	SQL	BEGIN   INSERT INTO test_suppressions (pattern) VALUES (pattern);   FLUSH NO_WRITE_TO_BINLOG TABLE test_suppressions; END	NULL	NULL	SQL	NO	CONTAINS SQL	NULL	DEFINER	YYYY-MM-DD hh:mm:ss	YYYY-MM-DD hh:mm:ss			root@localhost	utf8	utf8_general_ci	latin1_swedish_ci
-check_testcase	def	mtr	check_testcase	PROCEDURE		NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	SQL	BEGIN    SELECT * FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES     WHERE variable_name NOT IN ('timestamp')      AND variable_name not like "Last_IO_Err*"      AND variable_name != 'INNODB_IBUF_MAX_SIZE'      AND variable_name != 'INNODB_USE_NATIVE_AIO'      AND variable_name != 'INNODB_BUFFER_POOL_LOAD_AT_STARTUP'      AND variable_name not like 'GTID%POS'      AND variable_name != 'GTID_BINLOG_STATE'    ORDER BY variable_name;    SELECT * FROM INFORMATION_SCHEMA.SCHEMATA ORDER BY BINARY SCHEMA_NAME;    SELECT * FROM INFORMATION_SCHEMA.SCHEMATA     WHERE SCHEMA_NAME NOT IN ('mtr_wsrep_notify', 'wsrep_schema')     ORDER BY BINARY SCHEMA_NAME;    SELECT table_name AS tables_in_test FROM INFORMATION_SCHEMA.TABLES     WHERE table_schema='test';    SELECT CONCAT(table_schema, '.', table_name) AS tables_in_mysql     FROM INFORMATION_SCHEMA.TABLES       WHERE table_schema='mysql'         ORDER BY tables_in_mysql;   SELECT CONCAT(table_schema, '.', table_name) AS columns_in_mysql,   	 column_name, ordinal_position, column_default, is_nullable,          data_type, character_maximum_length, character_octet_length,          numeric_precision, numeric_scale, character_set_name,          collation_name, column_type, column_key, extra, column_comment     FROM INFORMATION_SCHEMA.COLUMNS       WHERE table_schema='mysql'         ORDER BY columns_in_mysql;    SELECT * FROM INFORMATION_SCHEMA.EVENTS;   SELECT * FROM INFORMATION_SCHEMA.TRIGGERS          WHERE TRIGGER_NAME NOT IN ('gs_insert', 'ts_insert');   SELECT * FROM INFORMATION_SCHEMA.ROUTINES;    SHOW STATUS LIKE 'slave_open_temp_tables';    checksum table     mysql.columns_priv,     mysql.db,     mysql.func,     mysql.help_category,     mysql.help_keyword,     mysql.help_relation,     mysql.host,     mysql.plugin,     mysql.proc,     mysql.procs_priv,     mysql.roles_mapping,     mysql.tables_priv,     mysql.time_zone,     mysql.time_zone_leap_second,     mysql.time_zone_name,     mysql.time_zone_transition,     mysql.time_zone_transition_type,     mysql.user;    SELECT * FROM INFORMATION_SCHEMA.PLUGINS;    select * from information_schema.session_variables     where variable_name = 'debug_sync';  END	NULL	NULL	SQL	NO	CONTAINS SQL	NULL	DEFINER	YYYY-MM-DD hh:mm:ss	YYYY-MM-DD hh:mm:ss			root@localhost	utf8	utf8_general_ci	latin1_swedish_ci
+check_testcase	def	mtr	check_testcase	PROCEDURE		NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	SQL	BEGIN    SELECT * FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES     WHERE variable_name NOT IN ('timestamp')      AND variable_name not like "Last_IO_Err*"      AND variable_name != 'INNODB_IBUF_MAX_SIZE'      AND variable_name != 'INNODB_USE_NATIVE_AIO'      AND variable_name != 'INNODB_BUFFER_POOL_LOAD_AT_STARTUP'      AND variable_name not like 'GTID%POS'      AND variable_name != 'GTID_BINLOG_STATE'      AND variable_name != 'THREAD_POOL_SIZE'    ORDER BY variable_name;    SELECT * FROM INFORMATION_SCHEMA.SCHEMATA ORDER BY BINARY SCHEMA_NAME;    SELECT * FROM INFORMATION_SCHEMA.SCHEMATA     WHERE SCHEMA_NAME NOT IN ('mtr_wsrep_notify', 'wsrep_schema')     ORDER BY BINARY SCHEMA_NAME;    SELECT table_name AS tables_in_test FROM INFORMATION_SCHEMA.TABLES     WHERE table_schema='test';    SELECT CONCAT(table_schema, '.', table_name) AS tables_in_mysql     FROM INFORMATION_SCHEMA.TABLES       WHERE table_schema='mysql'         ORDER BY tables_in_mysql;   SELECT CONCAT(table_schema, '.', table_name) AS columns_in_mysql,   	 column_name, ordinal_position, column_default, is_nullable,          data_type, character_maximum_length, character_octet_length,          numeric_precision, numeric_scale, character_set_name,          collation_name, column_type, column_key, extra, column_comment     FROM INFORMATION_SCHEMA.COLUMNS       WHERE table_schema='mysql'         ORDER BY columns_in_mysql;    SELECT * FROM INFORMATION_SCHEMA.EVENTS;   SELECT * FROM INFORMATION_SCHEMA.TRIGGERS          WHERE TRIGGER_NAME NOT IN ('gs_insert', 'ts_insert');   SELECT * FROM INFORMATION_SCHEMA.ROUTINES;    SHOW STATUS LIKE 'slave_open_temp_tables';    checksum table     mysql.columns_priv,     mysql.db,     mysql.func,     mysql.help_category,     mysql.help_keyword,     mysql.help_relation,     mysql.host,     mysql.plugin,     mysql.proc,     mysql.procs_priv,     mysql.roles_mapping,     mysql.tables_priv,     mysql.time_zone,     mysql.time_zone_leap_second,     mysql.time_zone_name,     mysql.time_zone_transition,     mysql.time_zone_transition_type,     mysql.user;    SELECT * FROM INFORMATION_SCHEMA.PLUGINS;    select * from information_schema.session_variables     where variable_name = 'debug_sync';  END	NULL	NULL	SQL	NO	CONTAINS SQL	NULL	DEFINER	YYYY-MM-DD hh:mm:ss	YYYY-MM-DD hh:mm:ss			root@localhost	utf8	utf8_general_ci	latin1_swedish_ci
 check_warnings	def	mtr	check_warnings	PROCEDURE		NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	SQL	BEGIN   DECLARE `pos` bigint unsigned;    SET SQL_LOG_BIN=0, SQL_SAFE_UPDATES=0;    UPDATE error_log el, global_suppressions gs     SET suspicious=0       WHERE el.suspicious=1 AND el.line REGEXP gs.pattern;    UPDATE error_log el, test_suppressions ts     SET suspicious=0       WHERE el.suspicious=1 AND el.line REGEXP ts.pattern;    SELECT COUNT(*) INTO @num_warnings FROM error_log     WHERE suspicious=1;    IF @num_warnings > 0 THEN     SELECT line         FROM error_log WHERE suspicious=1;     SELECT 2 INTO result;   ELSE     SELECT 0 INTO RESULT;   END IF;    TRUNCATE test_suppressions;   DROP TABLE error_log;  END	NULL	NULL	SQL	NO	CONTAINS SQL	NULL	DEFINER	YYYY-MM-DD hh:mm:ss	YYYY-MM-DD hh:mm:ss			root@localhost	utf8	utf8_general_ci	latin1_swedish_ci
 AddGeometryColumn	def	mysql	AddGeometryColumn	PROCEDURE		NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	SQL	begin
   set @qwe= concat('ALTER TABLE ', t_schema, '.', t_name, ' ADD ', geometry_column,' GEOMETRY REF_SYSTEM_ID=', t_srid); PREPARE ls from @qwe; execute ls; deallocate prepare ls; end	NULL	NULL	SQL	NO	CONTAINS SQL	NULL	INVOKER	YYYY-MM-DD hh:mm:ss	YYYY-MM-DD hh:mm:ss			root@localhost	latin1	latin1_swedish_ci	latin1_swedish_ci
diff --git a/mysql-test/suite/galera/disabled.def b/mysql-test/suite/galera/disabled.def
index f81fb849c77..dd1721839e0 100644
--- a/mysql-test/suite/galera/disabled.def
+++ b/mysql-test/suite/galera/disabled.def
@@ -18,7 +18,6 @@ galera.galera_defaults : MDEV-21494 Galera test sporadic failure on galera.galer
 galera_as_slave_replication_bundle : MDEV-15785 OPTION_GTID_BEGIN is set in Gtid_log_event::do_apply_event()
 galera_binlog_stmt_autoinc : MDEV-19959 Galera test failure on galera_binlog_stmt_autoinc	
 galera_gcache_recover_manytrx : MDEV-18834 Galera test failure
-galera_load_data : MDEV-19968 galera.galera_load_data
 galera_parallel_simple : MDEV-20318 galera.galera_parallel_simple fails	
 galera_shutdown_nonprim : MDEV-21493 galera.galera_shutdown_nonprim
 galera_ssl_upgrade : MDEV-19950 Galera test failure on galera_ssl_upgrade
diff --git a/mysql-test/suite/galera/include/galera_have_debug_sync.inc b/mysql-test/suite/galera/include/galera_have_debug_sync.inc
index 7c0156052d8..21e7b3c88c3 100644
--- a/mysql-test/suite/galera/include/galera_have_debug_sync.inc
+++ b/mysql-test/suite/galera/include/galera_have_debug_sync.inc
@@ -3,7 +3,7 @@
 --let $galera_have_debug_sync = `SELECT 1 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_debug_sync_waiters'`
 
 --if (!$galera_have_debug_sync) {
-	--skip "Test requires Galera debug library with debug_sync functionality"
+	--skip Test requires Galera debug library with debug_sync functionality
 }
 
 --enable_query_log
diff --git a/mysql-test/suite/galera/r/galera_gcache_recover_full_gcache.result b/mysql-test/suite/galera/r/galera_gcache_recover_full_gcache.result
index 588af5668bb..9b8408b1b58 100644
--- a/mysql-test/suite/galera/r/galera_gcache_recover_full_gcache.result
+++ b/mysql-test/suite/galera/r/galera_gcache_recover_full_gcache.result
@@ -17,10 +17,18 @@ connection node_2;
 Performing --wsrep-recover ...
 Using --wsrep-start-position when starting mysqld ...
 connection node_1;
+SELECT COUNT(*) FROM t1;
+COUNT(*)
+5
+connection node_2;
+SET SESSION wsrep_sync_wait = 15;
+SELECT COUNT(*) FROM t1;
+COUNT(*)
+5
 include/diff_servers.inc [servers=1 2]
 connection node_1;
 DROP TABLE t1;
 CALL mtr.add_suppression("Skipped GCache ring buffer recovery");
-include/assert_grep.inc [IST first seqno 2 not found from cache, falling back to SST]
+include/assert_grep.inc [not found from cache, falling back to SST]
 connection node_2;
 CALL mtr.add_suppression("Skipped GCache ring buffer recovery");
diff --git a/mysql-test/suite/galera/r/galera_load_data.result b/mysql-test/suite/galera/r/galera_load_data.result
index 8a7397c7cb5..bbfd14a98f6 100644
--- a/mysql-test/suite/galera/r/galera_load_data.result
+++ b/mysql-test/suite/galera/r/galera_load_data.result
@@ -1,7 +1,7 @@
 connection node_1;
 create database cardtest02;
 use cardtest02;
-CREATE TABLE `cardtest_tbl` (
+CREATE TABLE cardtest_tbl (
 `id` bigint(18) NOT NULL AUTO_INCREMENT,
 `course` bigint(18) NOT NULL,
 `name` varchar(200) DEFAULT NULL,
@@ -22,24 +22,29 @@ CREATE TABLE `cardtest_tbl` (
 `type` varchar(255) DEFAULT NULL,
 PRIMARY KEY (`id`)
 ) ENGINE=InnoDB AUTO_INCREMENT=1324 DEFAULT CHARSET=utf8 ROW_FORMAT=COMPRESSED;
-LOCK TABLES `cardtest_tbl` WRITE;
-ALTER TABLE `cardtest_tbl` DISABLE KEYS;
+LOCK TABLES cardtest_tbl WRITE;
+ALTER TABLE cardtest_tbl DISABLE KEYS;
 Warnings:
 Note	1031	Storage engine InnoDB of the table `cardtest02`.`cardtest_tbl` doesn't have this option
-INSERT INTO `cardtest_tbl` VALUES 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-ALTER TABLE `cardtest_tbl` ENABLE KEYS;
+INSERT INTO cardtest_tbl VALUES 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+ALTER TABLE cardtest_tbl ENABLE KEYS;
 Warnings:
 Note	1031	Storage engine InnoDB of the table `cardtest02`.`cardtest_tbl` doesn't have this option
 UNLOCK TABLES;
 use cardtest02;
-select count(*) from cardtest_tbl;
-count(*)
+ANALYZE TABLE cardtest_tbl;
+Table	Op	Msg_type	Msg_text
+cardtest02.cardtest_tbl	analyze	status	OK
+SELECT COUNT(*) AS EXPECT_301 FROM cardtest_tbl;
+EXPECT_301
 301
 connection node_2;
-set session wsrep_sync_wait=15;
 use cardtest02;
-select count(*) from cardtest_tbl;
-count(*)
+ANALYZE TABLE cardtest_tbl;
+Table	Op	Msg_type	Msg_text
+cardtest02.cardtest_tbl	analyze	status	OK
+SELECT COUNT(*) AS EXPECT_301 FROM cardtest_tbl;
+EXPECT_301
 301
 connection node_1;
 use test;
diff --git a/mysql-test/suite/galera/r/galera_sst_mariabackup_lost_found.result b/mysql-test/suite/galera/r/galera_sst_mariabackup_lost_found.result
new file mode 100644
index 00000000000..b2a2005748f
--- /dev/null
+++ b/mysql-test/suite/galera/r/galera_sst_mariabackup_lost_found.result
@@ -0,0 +1,37 @@
+connection node_1;
+connection node_2;
+connection node_2;
+Shutting down server ...
+connection node_1;
+CREATE DATABASE `lost+found`;
+USE `lost+found`;
+CREATE TABLE t1(id INT);
+INSERT INTO t1 VALUES (1), (2);
+SELECT * FROM `lost+found`.t1;
+id
+1
+2
+CREATE DATABASE `#mysql50#not_lost+found`;
+USE `#mysql50#not_lost+found`;
+CREATE TABLE t1(id INT);
+INSERT INTO t1 VALUES (1), (2);
+SELECT * FROM `#mysql50#not_lost+found`.t1;
+id
+1
+2
+Cleaning var directory ...
+connection node_2;
+Starting server ...
+SELECT * FROM `lost+found`.t1;
+id
+1
+2
+SELECT * FROM `#mysql50#not_lost+found`.t1;
+id
+1
+2
+connection node_1;
+DROP DATABASE `lost+found`;
+DROP DATABASE `#mysql50#not_lost+found`;
+disconnect node_2;
+disconnect node_1;
diff --git a/mysql-test/suite/galera/t/galera_gcache_recover_full_gcache.test b/mysql-test/suite/galera/t/galera_gcache_recover_full_gcache.test
index b7fd9cf3aed..0d8994f7d7b 100644
--- a/mysql-test/suite/galera/t/galera_gcache_recover_full_gcache.test
+++ b/mysql-test/suite/galera/t/galera_gcache_recover_full_gcache.test
@@ -38,6 +38,12 @@ INSERT INTO t1 (f2) VALUES (REPEAT('x', 1024 * 1024 * 10));
 --source include/galera_wait_ready.inc
 --let $wait_condition = SELECT VARIABLE_VALUE = 2 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
 
+SELECT COUNT(*) FROM t1;
+
+--connection node_2
+SET SESSION wsrep_sync_wait = 15;
+SELECT COUNT(*) FROM t1;
+
 --let $diff_servers = 1 2
 --source include/diff_servers.inc
 
@@ -48,8 +54,8 @@ DROP TABLE t1;
 CALL mtr.add_suppression("Skipped GCache ring buffer recovery");
 
 # Confirm that IST did not take place
---let $assert_text = IST first seqno 2 not found from cache, falling back to SST
---let $assert_select = IST first seqno 2 not found from cache, falling back to SST
+--let $assert_text = not found from cache, falling back to SST
+--let $assert_select = not found from cache, falling back to SST
 --let $assert_count = 1
 --let $assert_file = $MYSQLTEST_VARDIR/log/mysqld.1.err
 --let $assert_only_after = starting as process
diff --git a/mysql-test/suite/galera/t/galera_load_data.test b/mysql-test/suite/galera/t/galera_load_data.test
index d4e09582a55..183095492fa 100644
--- a/mysql-test/suite/galera/t/galera_load_data.test
+++ b/mysql-test/suite/galera/t/galera_load_data.test
@@ -5,7 +5,7 @@
 create database cardtest02;
 use cardtest02;
 
-CREATE TABLE `cardtest_tbl` (
+CREATE TABLE cardtest_tbl (
   `id` bigint(18) NOT NULL AUTO_INCREMENT,
   `course` bigint(18) NOT NULL,
   `name` varchar(200) DEFAULT NULL,
@@ -27,21 +27,26 @@ CREATE TABLE `cardtest_tbl` (
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB AUTO_INCREMENT=1324 DEFAULT CHARSET=utf8 ROW_FORMAT=COMPRESSED;
 
-LOCK TABLES `cardtest_tbl` WRITE;
-ALTER TABLE `cardtest_tbl` DISABLE KEYS;
+LOCK TABLES cardtest_tbl WRITE;
+ALTER TABLE cardtest_tbl DISABLE KEYS;
 
-INSERT INTO `cardtest_tbl` VALUES 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
 
-ALTER TABLE `cardtest_tbl` ENABLE KEYS;
+ALTER TABLE cardtest_tbl ENABLE KEYS;
 UNLOCK TABLES;
 
 use cardtest02;
 --let $wait_timeout=600
+--let $wait_condition = SELECT COUNT(*) = 301 from cardtest_tbl;
+--source include/wait_condition.inc
+
+ANALYZE TABLE cardtest_tbl;
+
 --let $wait_condition = SELECT table_rows = 301 from information_schema.tables WHERE TABLE_NAME = 'cardtest_tbl';
 --source include/wait_condition.inc
 
-select count(*) from cardtest_tbl;
+SELECT COUNT(*) AS EXPECT_301 FROM cardtest_tbl;
 
 let $cardinality1 = `SELECT cardinality from information_schema.statistics WHERE TABLE_NAME = 'cardtest_tbl'`;
 let $table_rows1 = `SELECT table_rows from information_schema.tables WHERE TABLE_NAME = 'cardtest_tbl'`;
@@ -49,14 +54,21 @@ let $avg_row_length1 = `SELECT avg_row_length from information_schema.tables WHE
 let $data_length1 = `SELECT data_length from information_schema.tables WHERE TABLE_NAME = 'cardtest_tbl'`;
 
 --connection node_2
-set session wsrep_sync_wait=15;
 use cardtest02;
 
 --let $wait_timeout=600
+--let $wait_condition = SELECT COUNT(*) = 301 from cardtest_tbl;
+--source include/wait_condition.inc
+
+ANALYZE TABLE cardtest_tbl;
+
+--source include/wait_condition.inc
 --let $wait_condition = SELECT table_rows = 301 from information_schema.tables WHERE TABLE_NAME = 'cardtest_tbl';
 --source include/wait_condition.inc
+--let $wait_condition = SELECT cardinality = 301 from information_schema.statistics WHERE TABLE_NAME = 'cardtest_tbl';
+--source include/wait_condition.inc
 
-select count(*) from cardtest_tbl;
+SELECT COUNT(*) AS EXPECT_301 FROM cardtest_tbl;
 
 if (`SELECT cardinality <> $cardinality1 from information_schema.statistics WHERE TABLE_NAME = 'cardtest_tbl'`)
 {
diff --git a/mysql-test/suite/galera/t/galera_sst_mariabackup_lost_found.cnf b/mysql-test/suite/galera/t/galera_sst_mariabackup_lost_found.cnf
new file mode 100644
index 00000000000..a09efd2e011
--- /dev/null
+++ b/mysql-test/suite/galera/t/galera_sst_mariabackup_lost_found.cnf
@@ -0,0 +1,15 @@
+!include ../galera_2nodes.cnf
+
+[mysqld]
+wsrep_sst_method=mariabackup
+wsrep_sst_auth="root:"
+
+[mysqld.1]
+wsrep_provider_options='base_port=@mysqld.1.#galera_port;gcache.size=1;pc.ignore_sb=true'
+
+[mysqld.2]
+wsrep_provider_options='base_port=@mysqld.2.#galera_port;gcache.size=1;pc.ignore_sb=true'
+
+[sst]
+transferfmt=@ENV.MTR_GALERA_TFMT
+streamfmt=xbstream
diff --git a/mysql-test/suite/galera/t/galera_sst_mariabackup_lost_found.test b/mysql-test/suite/galera/t/galera_sst_mariabackup_lost_found.test
new file mode 100644
index 00000000000..d1c30656139
--- /dev/null
+++ b/mysql-test/suite/galera/t/galera_sst_mariabackup_lost_found.test
@@ -0,0 +1,71 @@
+--source include/galera_cluster.inc
+--source include/have_innodb.inc
+--source include/have_mariabackup.inc
+
+# Save original auto_increment_offset values.
+--let $node_1=node_1
+--let $node_2=node_2
+--source include/auto_increment_offset_save.inc
+
+--connection node_2
+
+#--connection node_2
+#--source suite/galera/include/galera_unload_provider.inc
+
+--echo Shutting down server ...
+--source include/shutdown_mysqld.inc
+
+--connection node_1
+--let $wait_condition = SELECT VARIABLE_VALUE = 1 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size'
+--source include/wait_condition.inc
+
+CREATE DATABASE `lost+found`;
+USE `lost+found`;
+CREATE TABLE t1(id INT);
+INSERT INTO t1 VALUES (1), (2);
+SELECT * FROM `lost+found`.t1;
+
+CREATE DATABASE `#mysql50#not_lost+found`;
+USE `#mysql50#not_lost+found`;
+CREATE TABLE t1(id INT);
+INSERT INTO t1 VALUES (1), (2);
+SELECT * FROM `#mysql50#not_lost+found`.t1;
+
+#
+# Force SST
+#
+--echo Cleaning var directory ...
+--remove_file $MYSQLTEST_VARDIR/mysqld.2/data/grastate.dat
+--remove_files_wildcard $MYSQLTEST_VARDIR/mysqld.2/data/mtr
+--remove_files_wildcard $MYSQLTEST_VARDIR/mysqld.2/data/performance_schema
+--remove_files_wildcard $MYSQLTEST_VARDIR/mysqld.2/data/test
+--remove_files_wildcard $MYSQLTEST_VARDIR/mysqld.2/data/mysql
+--remove_files_wildcard $MYSQLTEST_VARDIR/mysqld.2/data
+
+--connection node_2
+
+--echo Starting server ...
+let $restart_noprint=2;
+--source include/start_mysqld.inc
+
+--let $wait_condition = SELECT VARIABLE_VALUE = 2 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
+--source include/wait_condition.inc
+
+--let $wait_condition = SELECT VARIABLE_VALUE = 'ON' FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_ready';
+--source include/wait_condition.inc
+
+SELECT * FROM `lost+found`.t1;
+SELECT * FROM `#mysql50#not_lost+found`.t1;
+
+--connection node_1
+
+DROP DATABASE `lost+found`;
+DROP DATABASE `#mysql50#not_lost+found`;
+
+# rmdir $MYSQLD_DATADIR/lost+found;
+# rmdir $MYSQLD_DATADIR/not_lost+found;
+
+# Restore original auto_increment_offset values.
+--source include/auto_increment_offset_restore.inc
+
+--source include/galera_end.inc
diff --git a/mysql-test/suite/galera_3nodes/disabled.def b/mysql-test/suite/galera_3nodes/disabled.def
index ff7262947a0..0e2706f2dc3 100644
--- a/mysql-test/suite/galera_3nodes/disabled.def
+++ b/mysql-test/suite/galera_3nodes/disabled.def
@@ -11,11 +11,6 @@
 ##############################################################################
 
 galera_gtid_2_cluster : MDEV-23775 Galera test failure on galera_3nodes.galera_gtid_2_cluster
-galera_ipv6_mariabackup : MDEV-21770 galera_3nodes.galera_ipv6_mariabackup fails
-galera_ipv6_mariabackup_section : MDEV-21770 galera_3nodes.galera_ipv6_mariabackup fails
-galera_ipv6_mysqldump : MDEV-23576 galera_3nodes.galera_ipv6_mysqldump MTR failed: WSREP_SST: [ERROR] rsync daemon port '16008' has been taken
-galera_ipv6_rsync : MDEV-23581 galera_3nodes.galera_ipv6_rsync MTR failed: WSREP_SST: [ERROR] rsync daemon port '16008' has been taken
-galera_ipv6_rsync_section : MDEV-23580 galera_3nodes.galera_ipv6_rsync_section MTR failed: WSREP_SST: [ERROR] rsync daemon port '16008' has been taken
 galera_ist_gcache_rollover : MDEV-23578 WSREP: exception caused by message: {v=0,t=1,ut=255,o=4,s=0,sr=0,as=1,f=6,src=50524cfe,srcvid=view_id(REG,50524cfe,4),insvid=view_id(UNKNOWN,00000000,0),ru=00000000,r=[-1,-1],fs=75,nl=(}
 galera_slave_options_do :MDEV-8798
 galera_slave_options_ignore : MDEV-8798
diff --git a/mysql-test/suite/galera_3nodes/t/galera_ipv6_mariabackup.cnf b/mysql-test/suite/galera_3nodes/t/galera_ipv6_mariabackup.cnf
index 3861b17557d..8432b1c368c 100644
--- a/mysql-test/suite/galera_3nodes/t/galera_ipv6_mariabackup.cnf
+++ b/mysql-test/suite/galera_3nodes/t/galera_ipv6_mariabackup.cnf
@@ -10,6 +10,7 @@ wsrep-cluster-address=gcomm://
 wsrep_provider_options='base_host=[::1];base_port=@mysqld.1.#galera_port;gmcast.listen_addr=tcp://[::]:@mysqld.1.#galera_port;ist.recv_addr=[::1]:@mysqld.1.#ist_port'
 wsrep_sst_receive_address='[::1]:@mysqld.1.#sst_port'
 wsrep_node_incoming_address='[::1]:@mysqld.1.port'
+wsrep_node_name=node_1
 bind-address=::
 
 [mysqld.2]
@@ -17,6 +18,8 @@ wsrep_cluster_address='gcomm://[::1]:@mysqld.1.#galera_port'
 wsrep_provider_options='base_host=[::1];base_port=@mysqld.2.#galera_port;gmcast.listen_addr=tcp://[::]:@mysqld.2.#galera_port;ist.recv_addr=[::1]:@mysqld.2.#ist_port'
 wsrep_sst_receive_address='[::1]:@mysqld.2.#sst_port'
 wsrep_node_incoming_address='[::1]:@mysqld.2.port'
+wsrep_node_name=node_2
+wsrep_sst_donor=node_1
 bind-address=::
 
 [mysqld.3]
@@ -24,6 +27,8 @@ wsrep_cluster_address='gcomm://[::1]:@mysqld.1.#galera_port'
 wsrep_provider_options='base_host=[::1];base_port=@mysqld.3.#galera_port;gmcast.listen_addr=tcp://[::]:@mysqld.3.#galera_port;ist.recv_addr=[::1]:@mysqld.3.#ist_port'
 wsrep_sst_receive_address='[::1]:@mysqld.3.#sst_port'
 wsrep_node_incoming_address='[::1]:@mysqld.3.port'
+wsrep_node_name=node_3
+wsrep_sst_donor=node_1
 bind-address=::
 
 [SST]
diff --git a/mysql-test/suite/gcol/r/innodb_virtual_fk.result b/mysql-test/suite/gcol/r/innodb_virtual_fk.result
index a3cdacb67a2..50685e04a69 100644
--- a/mysql-test/suite/gcol/r/innodb_virtual_fk.result
+++ b/mysql-test/suite/gcol/r/innodb_virtual_fk.result
@@ -769,3 +769,24 @@ ID	ParentID	Value	Flag
 INSERT INTO parent (ID) VALUES (100);
 UPDATE child SET ParentID=100 WHERE ID=123123;
 DROP TABLE child, parent;
+#
+# MDEV-23387 dict_load_foreign() fails to load the table during alter
+#
+SET FOREIGN_KEY_CHECKS=0;
+CREATE TABLE t1(f1 INT NOT NULL, f2 INT NOT NULL,
+f3 INT AS (f1) VIRTUAL,
+INDEX(f1), INDEX(f2))ENGINE=InnoDB;
+ALTER TABLE t1 ADD CONSTRAINT r FOREIGN KEY(f2) REFERENCES t1(f1), LOCK=NONE;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `f1` int(11) NOT NULL,
+  `f2` int(11) NOT NULL,
+  `f3` int(11) GENERATED ALWAYS AS (`f1`) VIRTUAL,
+  KEY `f1` (`f1`),
+  KEY `f2` (`f2`),
+  CONSTRAINT `r` FOREIGN KEY (`f2`) REFERENCES `t1` (`f1`)
+) ENGINE=InnoDB DEFAULT CHARSET=latin1
+ALTER TABLE t1 DROP INDEX f1;
+ALTER TABLE t1 DROP f3;
+DROP TABLE t1;
diff --git a/mysql-test/suite/gcol/t/innodb_virtual_fk.test b/mysql-test/suite/gcol/t/innodb_virtual_fk.test
index 226bacabaef..23d3ee97290 100644
--- a/mysql-test/suite/gcol/t/innodb_virtual_fk.test
+++ b/mysql-test/suite/gcol/t/innodb_virtual_fk.test
@@ -637,3 +637,15 @@ UPDATE child SET ParentID=100 WHERE ID=123123;
 
 # Cleanup
 DROP TABLE child, parent;
+--echo #
+--echo # MDEV-23387 dict_load_foreign() fails to load the table during alter
+--echo #
+SET FOREIGN_KEY_CHECKS=0;
+CREATE TABLE t1(f1 INT NOT NULL, f2 INT NOT NULL,
+		f3 INT AS (f1) VIRTUAL,
+		INDEX(f1), INDEX(f2))ENGINE=InnoDB;
+ALTER TABLE t1 ADD CONSTRAINT r FOREIGN KEY(f2) REFERENCES t1(f1), LOCK=NONE;
+SHOW CREATE TABLE t1;
+ALTER TABLE t1 DROP INDEX f1;
+ALTER TABLE t1 DROP f3;
+DROP TABLE t1;
diff --git a/mysql-test/suite/innodb/r/foreign_key.result b/mysql-test/suite/innodb/r/foreign_key.result
index 43cee8a6e6b..8c0678506f4 100644
--- a/mysql-test/suite/innodb/r/foreign_key.result
+++ b/mysql-test/suite/innodb/r/foreign_key.result
@@ -419,6 +419,41 @@ connection default;
 XA END 'xid';
 XA ROLLBACK 'xid';
 DROP TABLE t1;
+CREATE TABLE t1 (pk INT PRIMARY KEY,
+f1 VARCHAR(10), f2 VARCHAR(10),
+f3 VARCHAR(10), f4 VARCHAR(10),
+f5 VARCHAR(10), f6 VARCHAR(10),
+f7 VARCHAR(10), f8 VARCHAR(10),
+INDEX(f1), INDEX(f2), INDEX(f3), INDEX(f4),
+INDEX(f5), INDEX(f6), INDEX(f7), INDEX(f8)) ENGINE=InnoDB;
+INSERT INTO t1 VALUES (1, 'mariadb', 'mariadb', 'mariadb', 'mariadb',
+'mariadb', 'mariadb', 'mariadb', 'mariadb'),
+(2, 'mariadb', 'mariadb', 'mariadb', 'mariadb',
+'mariadb', 'mariadb', 'mariadb', 'mariadb'),
+(3, 'innodb', 'innodb', 'innodb', 'innodb',
+'innodb', 'innodb', 'innodb', 'innodb');
+ALTER TABLE t1 ADD FOREIGN KEY (f1) REFERENCES t1 (f2) ON DELETE SET NULL;
+START TRANSACTION;
+DELETE FROM t1 where f1='mariadb';
+SELECT * FROM t1;
+pk	f1	f2	f3	f4	f5	f6	f7	f8
+2	NULL	mariadb	mariadb	mariadb	mariadb	mariadb	mariadb	mariadb
+3	innodb	innodb	innodb	innodb	innodb	innodb	innodb	innodb
+ROLLBACK;
+ALTER TABLE t1 ADD FOREIGN KEY (f3) REFERENCES t1 (f4) ON DELETE CASCADE;
+START TRANSACTION;
+DELETE FROM t1 where f3='mariadb';
+SELECT * FROM t1;
+pk	f1	f2	f3	f4	f5	f6	f7	f8
+3	innodb	innodb	innodb	innodb	innodb	innodb	innodb	innodb
+ROLLBACK;
+ALTER TABLE t1 ADD FOREIGN KEY (f5) REFERENCES t1 (f6) ON UPDATE SET NULL;
+UPDATE t1 SET f6='update';
+ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t1`, CONSTRAINT `t1_ibfk_3` FOREIGN KEY (`f5`) REFERENCES `t1` (`f6`) ON UPDATE SET NULL)
+ALTER TABLE t1 ADD FOREIGN KEY (f7) REFERENCES t1 (f8) ON UPDATE CASCADE;
+UPDATE t1 SET f6='cascade';
+ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t1`, CONSTRAINT `t1_ibfk_3` FOREIGN KEY (`f5`) REFERENCES `t1` (`f6`) ON UPDATE SET NULL)
+DROP TABLE t1;
 # Start of 10.2 tests
 #
 # MDEV-13246 Stale rows despite ON DELETE CASCADE constraint
diff --git a/mysql-test/suite/innodb/r/innodb_stats_drop_locked.result b/mysql-test/suite/innodb/r/innodb_stats_drop_locked.result
index b8f312ccd63..1567ac6cb0a 100644
--- a/mysql-test/suite/innodb/r/innodb_stats_drop_locked.result
+++ b/mysql-test/suite/innodb/r/innodb_stats_drop_locked.result
@@ -47,3 +47,5 @@ innodb_stats_drop_locked
 innodb_stats_drop_locked
 innodb_stats_drop_locked
 innodb_stats_drop_locked
+DELETE FROM mysql.innodb_index_stats WHERE database_name='test' AND table_name='innodb_stats_drop_locked';
+DELETE FROM mysql.innodb_table_stats WHERE database_name='test' AND table_name='innodb_stats_drop_locked';
diff --git a/mysql-test/suite/innodb/t/foreign_key.test b/mysql-test/suite/innodb/t/foreign_key.test
index 190461a4f7b..380d4520d87 100644
--- a/mysql-test/suite/innodb/t/foreign_key.test
+++ b/mysql-test/suite/innodb/t/foreign_key.test
@@ -421,6 +421,41 @@ ALTER TABLE t1 ADD FOREIGN KEY f (a) REFERENCES t1 (pk), LOCK=EXCLUSIVE;# Cleanu
 XA END 'xid';
 XA ROLLBACK 'xid';
 DROP TABLE t1;
+
+CREATE TABLE t1 (pk INT PRIMARY KEY,
+                 f1 VARCHAR(10), f2 VARCHAR(10),
+		 f3 VARCHAR(10), f4 VARCHAR(10),
+		 f5 VARCHAR(10), f6 VARCHAR(10),
+		 f7 VARCHAR(10), f8 VARCHAR(10),
+		 INDEX(f1), INDEX(f2), INDEX(f3), INDEX(f4),
+		 INDEX(f5), INDEX(f6), INDEX(f7), INDEX(f8)) ENGINE=InnoDB;
+INSERT INTO t1 VALUES (1, 'mariadb', 'mariadb', 'mariadb', 'mariadb',
+                       'mariadb', 'mariadb', 'mariadb', 'mariadb'),
+                      (2, 'mariadb', 'mariadb', 'mariadb', 'mariadb',
+                       'mariadb', 'mariadb', 'mariadb', 'mariadb'),
+                      (3, 'innodb', 'innodb', 'innodb', 'innodb',
+                       'innodb', 'innodb', 'innodb', 'innodb');
+ALTER TABLE t1 ADD FOREIGN KEY (f1) REFERENCES t1 (f2) ON DELETE SET NULL;
+START TRANSACTION;
+DELETE FROM t1 where f1='mariadb';
+SELECT * FROM t1;
+ROLLBACK;
+
+ALTER TABLE t1 ADD FOREIGN KEY (f3) REFERENCES t1 (f4) ON DELETE CASCADE;
+
+START TRANSACTION;
+DELETE FROM t1 where f3='mariadb';
+SELECT * FROM t1;
+ROLLBACK;
+
+ALTER TABLE t1 ADD FOREIGN KEY (f5) REFERENCES t1 (f6) ON UPDATE SET NULL;
+--error ER_ROW_IS_REFERENCED_2
+UPDATE t1 SET f6='update';
+
+ALTER TABLE t1 ADD FOREIGN KEY (f7) REFERENCES t1 (f8) ON UPDATE CASCADE;
+--error ER_ROW_IS_REFERENCED_2
+UPDATE t1 SET f6='cascade';
+DROP TABLE t1;
 #
 # End of 10.1 tests
 #
diff --git a/mysql-test/suite/innodb/t/innodb_stats_drop_locked.test b/mysql-test/suite/innodb/t/innodb_stats_drop_locked.test
index 26367b8e6ae..07c77299451 100644
--- a/mysql-test/suite/innodb/t/innodb_stats_drop_locked.test
+++ b/mysql-test/suite/innodb/t/innodb_stats_drop_locked.test
@@ -56,6 +56,8 @@ WHERE table_name='innodb_stats_drop_locked';
 SELECT table_name FROM mysql.innodb_index_stats
 WHERE table_name='innodb_stats_drop_locked';
 
+DELETE FROM mysql.innodb_index_stats WHERE database_name='test' AND table_name='innodb_stats_drop_locked';
+DELETE FROM mysql.innodb_table_stats WHERE database_name='test' AND table_name='innodb_stats_drop_locked';
 --disable_query_log
 call mtr.add_suppression("Unable to delete statistics for table test.innodb_stats_drop_locked: Lock wait timeout. They can be deleted later using DELETE FROM mysql.innodb_index_stats WHERE database_name");
 --enable_query_log
diff --git a/mysql-test/suite/innodb/t/innodb_trx_weight.opt b/mysql-test/suite/innodb/t/innodb_trx_weight.opt
deleted file mode 100644
index bac39c99a74..00000000000
--- a/mysql-test/suite/innodb/t/innodb_trx_weight.opt
+++ /dev/null
@@ -1 +0,0 @@
---loose-innodb-lock-schedule-algorithm=FCFS
diff --git a/mysql-test/suite/innodb/t/update-cascade.combinations b/mysql-test/suite/innodb/t/update-cascade.combinations
new file mode 100644
index 00000000000..8fb4862675b
--- /dev/null
+++ b/mysql-test/suite/innodb/t/update-cascade.combinations
@@ -0,0 +1,5 @@
+[FCFS]
+--innodb-lock-schedule-algorithm=FCFS
+
+[VATS]
+--innodb-lock-schedule-algorithm=VATS
diff --git a/mysql-test/suite/innodb_fts/r/basic.result b/mysql-test/suite/innodb_fts/r/basic.result
index d96127fbc34..b3fd94509c3 100644
--- a/mysql-test/suite/innodb_fts/r/basic.result
+++ b/mysql-test/suite/innodb_fts/r/basic.result
@@ -132,6 +132,27 @@ id	title	body
 3	Optimizing MySQL	In this tutorial we will show ...
 4	1001 MySQL Tricks	1. Never run mysqld as root. 2. ...
 5	MySQL vs. YourSQL	In the following database comparison ...
+SELECT * FROM articles WHERE MATCH (title,body) AGAINST
+('(((((((((((((((((((((((((((((((((Security)))))))))))))))))))))))))))))))))'
+ IN BOOLEAN MODE);
+ERROR HY000: Table handler out of memory
+SELECT * FROM articles WHERE MATCH (title,body) AGAINST
+('((((((((((((((((((((((((((((((((Security))))))))))))))))))))))))))))))))'
+ IN BOOLEAN MODE);
+id	title	body
+6	MySQL Security	When configured properly, MySQL ...
+SELECT * FROM articles WHERE MATCH (title,body) AGAINST
+('(((((((((((((((((((((((((((((((vs))))))))))))))))))))))))))))))),(((to)))'
+ IN BOOLEAN MODE);
+id	title	body
+SELECT * FROM articles WHERE MATCH (title,body) AGAINST
+('((((((((((((((((((((((((((((((((Security)))))))))))))))))))))))))))))))'
+ IN BOOLEAN MODE);
+ERROR 42000: syntax error, unexpected $end
+SELECT * FROM articles WHERE MATCH (title,body) AGAINST
+('(((((((((((((((((((((((((((((((((Security))))))))))))))))))))))))))))))))'
+ IN BOOLEAN MODE);
+ERROR 42000: syntax error, unexpected $end
 SELECT * FROM articles WHERE MATCH (title,body)
 AGAINST ('+ MySQL + (>Well < stands)' IN BOOLEAN MODE);
 id	title	body
diff --git a/mysql-test/suite/innodb_fts/r/innodb_fts_misc_1.result b/mysql-test/suite/innodb_fts/r/innodb_fts_misc_1.result
index aec3d7f777d..8d5841b3a63 100644
--- a/mysql-test/suite/innodb_fts/r/innodb_fts_misc_1.result
+++ b/mysql-test/suite/innodb_fts/r/innodb_fts_misc_1.result
@@ -915,4 +915,46 @@ DROP TABLE t1;
 DROP TABLE t2;
 DROP TABLE t3;
 DROP TABLE t4;
+#
+# InnoDB: Failing assertion: result != FTS_INVALID in
+#        fts_trx_row_get_new_state
+#
+SET FOREIGN_KEY_CHECKS=1;
+CREATE TABLE t1 (pk INT PRIMARY KEY,
+f1 VARCHAR(10), f2 VARCHAR(10),
+f3 VARCHAR(10), f4 VARCHAR(10),
+f5 VARCHAR(10), f6 VARCHAR(10),
+f7 VARCHAR(10), f8 VARCHAR(10),
+FULLTEXT(f1), FULLTEXT(f2), FULLTEXT(f3), FULLTEXT(f4),
+FULLTEXT(f5), FULLTEXT(f6), FULLTEXT(f7), FULLTEXT(f8),
+INDEX(f1), INDEX(f2), INDEX(f3), INDEX(f4),
+INDEX(f5), INDEX(f6), INDEX(f7), INDEX(f8)) ENGINE=InnoDB;
+INSERT INTO t1 VALUES (1, 'mariadb', 'mariadb', 'mariadb', 'mariadb',
+'mariadb', 'mariadb', 'mariadb', 'mariadb'),
+(2, 'mariadb', 'mariadb', 'mariadb', 'mariadb',
+'mariadb', 'mariadb', 'mariadb', 'mariadb'),
+(3, 'innodb', 'innodb', 'innodb', 'innodb',
+'innodb', 'innodb', 'innodb', 'innodb');
+ALTER TABLE t1 ADD FOREIGN KEY (f1) REFERENCES t1 (f2) ON DELETE SET NULL;
+START TRANSACTION;
+DELETE FROM t1 where f1='mariadb';
+SELECT * FROM t1;
+pk	f1	f2	f3	f4	f5	f6	f7	f8
+2	NULL	mariadb	mariadb	mariadb	mariadb	mariadb	mariadb	mariadb
+3	innodb	innodb	innodb	innodb	innodb	innodb	innodb	innodb
+ROLLBACK;
+ALTER TABLE t1 ADD FOREIGN KEY (f3) REFERENCES t1 (f4) ON DELETE CASCADE;
+START TRANSACTION;
+DELETE FROM t1 where f3='mariadb';
+SELECT * FROM t1;
+pk	f1	f2	f3	f4	f5	f6	f7	f8
+3	innodb	innodb	innodb	innodb	innodb	innodb	innodb	innodb
+ROLLBACK;
+ALTER TABLE t1 ADD FOREIGN KEY (f5) REFERENCES t1 (f6) ON UPDATE SET NULL;
+UPDATE t1 SET f6='update';
+ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t1`, CONSTRAINT `t1_ibfk_3` FOREIGN KEY (`f5`) REFERENCES `t1` (`f6`) ON UPDATE SET NULL)
+ALTER TABLE t1 ADD FOREIGN KEY (f7) REFERENCES t1 (f8) ON UPDATE CASCADE;
+UPDATE t1 SET f6='cascade';
+ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t1`, CONSTRAINT `t1_ibfk_3` FOREIGN KEY (`f5`) REFERENCES `t1` (`f6`) ON UPDATE SET NULL)
+DROP TABLE t1;
 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS;
diff --git a/mysql-test/suite/innodb_fts/t/basic.test b/mysql-test/suite/innodb_fts/t/basic.test
index 0c0920c5f16..7a5c83ffb06 100644
--- a/mysql-test/suite/innodb_fts/t/basic.test
+++ b/mysql-test/suite/innodb_fts/t/basic.test
@@ -107,6 +107,26 @@ SELECT * FROM articles WHERE MATCH (title,body)
 SELECT * FROM articles WHERE MATCH (title,body)
 	AGAINST ('+ MySQL - (Well stands)' IN BOOLEAN MODE);
 
+--error 128
+SELECT * FROM articles WHERE MATCH (title,body) AGAINST
+('(((((((((((((((((((((((((((((((((Security)))))))))))))))))))))))))))))))))'
+ IN BOOLEAN MODE);
+SELECT * FROM articles WHERE MATCH (title,body) AGAINST
+('((((((((((((((((((((((((((((((((Security))))))))))))))))))))))))))))))))'
+ IN BOOLEAN MODE);
+SELECT * FROM articles WHERE MATCH (title,body) AGAINST
+('(((((((((((((((((((((((((((((((vs))))))))))))))))))))))))))))))),(((to)))'
+ IN BOOLEAN MODE);
+
+--error ER_PARSE_ERROR
+SELECT * FROM articles WHERE MATCH (title,body) AGAINST
+('((((((((((((((((((((((((((((((((Security)))))))))))))))))))))))))))))))'
+ IN BOOLEAN MODE);
+--error ER_PARSE_ERROR
+SELECT * FROM articles WHERE MATCH (title,body) AGAINST
+('(((((((((((((((((((((((((((((((((Security))))))))))))))))))))))))))))))))'
+ IN BOOLEAN MODE);
+
 # Test sub-expression boolean search. Find rows contain
 # "MySQL" and "Well" or "MySQL" and "stands". But rank the 
 # doc with "Well" higher, and doc with "stands" lower.
diff --git a/mysql-test/suite/innodb_fts/t/innodb_fts_misc_1.test b/mysql-test/suite/innodb_fts/t/innodb_fts_misc_1.test
index 3c794ec6440..46b65590298 100644
--- a/mysql-test/suite/innodb_fts/t/innodb_fts_misc_1.test
+++ b/mysql-test/suite/innodb_fts/t/innodb_fts_misc_1.test
@@ -889,4 +889,46 @@ DROP TABLE t2;
 DROP TABLE t3;
 DROP TABLE t4;
 
+--echo #
+--echo # InnoDB: Failing assertion: result != FTS_INVALID in
+--echo #        fts_trx_row_get_new_state
+--echo #
+SET FOREIGN_KEY_CHECKS=1;
+CREATE TABLE t1 (pk INT PRIMARY KEY,
+                 f1 VARCHAR(10), f2 VARCHAR(10),
+                 f3 VARCHAR(10), f4 VARCHAR(10),
+                 f5 VARCHAR(10), f6 VARCHAR(10),
+		 f7 VARCHAR(10), f8 VARCHAR(10),
+		 FULLTEXT(f1), FULLTEXT(f2), FULLTEXT(f3), FULLTEXT(f4),
+		 FULLTEXT(f5), FULLTEXT(f6), FULLTEXT(f7), FULLTEXT(f8),
+                 INDEX(f1), INDEX(f2), INDEX(f3), INDEX(f4),
+		 INDEX(f5), INDEX(f6), INDEX(f7), INDEX(f8)) ENGINE=InnoDB;
+INSERT INTO t1 VALUES (1, 'mariadb', 'mariadb', 'mariadb', 'mariadb',
+                       'mariadb', 'mariadb', 'mariadb', 'mariadb'),
+                      (2, 'mariadb', 'mariadb', 'mariadb', 'mariadb',
+                       'mariadb', 'mariadb', 'mariadb', 'mariadb'),
+		      (3, 'innodb', 'innodb', 'innodb', 'innodb',
+		       'innodb', 'innodb', 'innodb', 'innodb');
+ALTER TABLE t1 ADD FOREIGN KEY (f1) REFERENCES t1 (f2) ON DELETE SET NULL;
+START TRANSACTION;
+DELETE FROM t1 where f1='mariadb';
+SELECT * FROM t1;
+ROLLBACK;
+
+ALTER TABLE t1 ADD FOREIGN KEY (f3) REFERENCES t1 (f4) ON DELETE CASCADE;
+
+START TRANSACTION;
+DELETE FROM t1 where f3='mariadb';
+SELECT * FROM t1;
+ROLLBACK;
+
+ALTER TABLE t1 ADD FOREIGN KEY (f5) REFERENCES t1 (f6) ON UPDATE SET NULL;
+--error ER_ROW_IS_REFERENCED_2
+UPDATE t1 SET f6='update';
+
+ALTER TABLE t1 ADD FOREIGN KEY (f7) REFERENCES t1 (f8) ON UPDATE CASCADE;
+--error ER_ROW_IS_REFERENCED_2
+UPDATE t1 SET f6='cascade';
+DROP TABLE t1;
+
 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS;
diff --git a/mysql-test/suite/rpl/disabled.def b/mysql-test/suite/rpl/disabled.def
index acdd3afcf9c..b5f011deda8 100644
--- a/mysql-test/suite/rpl/disabled.def
+++ b/mysql-test/suite/rpl/disabled.def
@@ -16,4 +16,3 @@ rpl_partition_archive     : MDEV-5077 2013-09-27 svoj Cannot exchange partition
 rpl_row_binlog_max_cache_size : MDEV-11092
 rpl_row_index_choice      : MDEV-11666
 rpl_semi_sync_after_sync  : fails after MDEV-16172
-rpl_slave_grp_exec: MDEV-10514
diff --git a/mysql-test/suite/rpl/r/rpl_mysql_upgrade.result b/mysql-test/suite/rpl/r/rpl_mysql_upgrade.result
index 1f352e68bc7..35e5de7b15a 100644
--- a/mysql-test/suite/rpl/r/rpl_mysql_upgrade.result
+++ b/mysql-test/suite/rpl/r/rpl_mysql_upgrade.result
@@ -3,20 +3,66 @@ include/master-slave.inc
 call mtr.add_suppression("Unsafe statement written to the binary log using statement format since BINLOG_FORMAT = STATEMENT");
 call mtr.add_suppression("table or database name 'mysqltest-1'");
 connection master;
-DROP DATABASE IF EXISTS `#mysql50#mysqltest-1`;
-CREATE DATABASE `#mysql50#mysqltest-1`;
+CREATE DATABASE `mysqltest-1`;
 connection slave;
 connection master;
 connection slave;
 connection master;
 Master position is not changed
 connection slave;
-STOP SLAVE SQL_THREAD;
-include/wait_for_slave_sql_to_stop.inc
+SET @old_general_log_state = @@global.general_log;
+SET @old_slow_log_state = @@global.slow_query_log;
+SET @old_log_output = @@global.log_output;
+SET GLOBAL general_log = 'ON';
+SET GLOBAL slow_query_log = 'ON';
+SET GLOBAL log_output = 'FILE';
+connection master;
+ALTER TABLE mysql.slow_log DROP COLUMN thread_id, DROP COLUMN rows_affected;
+DROP DATABASE `mysqltest-1`;
+connection slave;
+connection slave;
+SHOW CREATE TABLE mysql.slow_log;
+Table	Create Table
+slow_log	CREATE TABLE `slow_log` (
+  `start_time` timestamp(6) NOT NULL DEFAULT current_timestamp(6) ON UPDATE current_timestamp(6),
+  `user_host` mediumtext NOT NULL,
+  `query_time` time(6) NOT NULL,
+  `lock_time` time(6) NOT NULL,
+  `rows_sent` int(11) NOT NULL,
+  `rows_examined` int(11) NOT NULL,
+  `db` varchar(512) NOT NULL,
+  `last_insert_id` int(11) NOT NULL,
+  `insert_id` int(11) NOT NULL,
+  `server_id` int(10) unsigned NOT NULL,
+  `sql_text` mediumtext NOT NULL
+) ENGINE=CSV DEFAULT CHARSET=utf8 COMMENT='Slow log'
 connection master;
 connection master;
 Master position has been changed
-DROP DATABASE `mysqltest-1`;
 connection slave;
-DROP DATABASE `#mysql50#mysqltest-1`;
+connection slave;
+SHOW CREATE TABLE mysql.slow_log;
+Table	Create Table
+slow_log	CREATE TABLE `slow_log` (
+  `start_time` timestamp(6) NOT NULL DEFAULT current_timestamp(6) ON UPDATE current_timestamp(6),
+  `user_host` mediumtext NOT NULL,
+  `query_time` time(6) NOT NULL,
+  `lock_time` time(6) NOT NULL,
+  `rows_sent` int(11) NOT NULL,
+  `rows_examined` int(11) NOT NULL,
+  `db` varchar(512) NOT NULL,
+  `last_insert_id` int(11) NOT NULL,
+  `insert_id` int(11) NOT NULL,
+  `server_id` int(10) unsigned NOT NULL,
+  `sql_text` mediumtext NOT NULL,
+  `thread_id` bigint(21) unsigned NOT NULL,
+  `rows_affected` int(11) NOT NULL
+) ENGINE=CSV DEFAULT CHARSET=utf8 COMMENT='Slow log'
+SET GLOBAL general_log = 'OFF';
+SET GLOBAL slow_query_log = 'OFF';
+truncate mysql.slow_log;
+truncate mysql.general_log;
+SET GLOBAL general_log = @old_general_log_state;
+SET GLOBAL slow_query_log = @old_slow_log_state;
+SET GLOBAL log_output = @old_log_output;
 include/rpl_end.inc
diff --git a/mysql-test/suite/rpl/r/rpl_start_stop_slave.result b/mysql-test/suite/rpl/r/rpl_start_stop_slave.result
index c0140962a56..e0272b71192 100644
--- a/mysql-test/suite/rpl/r/rpl_start_stop_slave.result
+++ b/mysql-test/suite/rpl/r/rpl_start_stop_slave.result
@@ -5,10 +5,12 @@ set @time_before_kill := (select CURRENT_TIMESTAMP);
 [Time before the query]
 [Connection ID of the slave I/O thread found]
 kill <connection_id>;
+include/wait_for_slave_io_to_stop.inc
 set @time_after_kill := (select CURRENT_TIMESTAMP);
 [Time after the query]
 [Killing of the slave IO thread was successful]
 START SLAVE IO_THREAD;
+include/wait_for_slave_io_to_start.inc
 connection master;
 create table t1 (a int primary key);
 connection slave;
diff --git a/mysql-test/suite/rpl/t/rpl_gtid_delete_domain.test b/mysql-test/suite/rpl/t/rpl_gtid_delete_domain.test
index 622e66c5263..0262998798a 100644
--- a/mysql-test/suite/rpl/t/rpl_gtid_delete_domain.test
+++ b/mysql-test/suite/rpl/t/rpl_gtid_delete_domain.test
@@ -55,8 +55,17 @@ FLUSH BINARY LOGS;
 --let $purge_to_binlog= query_get_value(SHOW MASTER STATUS, File, 1)
 --eval PURGE BINARY LOGS TO '$purge_to_binlog';
 # with final removal of the extra domain
+###adding to debug info to catch the failure (1076):
+--error 0,1076
 --eval FLUSH BINARY LOGS DELETE_DOMAIN_ID=($extra_domain_id)
+
+if ($mysql_errno == 1076) { 
+    --echo ### Failure "Could not delete gtid domain"
+    --source include/show_rpl_debug_info.inc
+  }
+
 SELECT @@global.gtid_binlog_pos, @@global.gtid_binlog_state;
+
 --connection slave
 SELECT @@global.gtid_slave_pos;
 # start the slave sucessfully
diff --git a/mysql-test/suite/rpl/t/rpl_mysql_upgrade.test b/mysql-test/suite/rpl/t/rpl_mysql_upgrade.test
index 1931e2eab2a..f44c883ef4e 100644
--- a/mysql-test/suite/rpl/t/rpl_mysql_upgrade.test
+++ b/mysql-test/suite/rpl/t/rpl_mysql_upgrade.test
@@ -14,8 +14,7 @@ call mtr.add_suppression("table or database name 'mysqltest-1'");
 
 connection master;
 --disable_warnings
-DROP DATABASE IF EXISTS `#mysql50#mysqltest-1`;
-CREATE DATABASE `#mysql50#mysqltest-1`;
+CREATE DATABASE `mysqltest-1`;
 --enable_warnings
 sync_slave_with_master;
 
@@ -34,13 +33,25 @@ if ($before_position == $after_position)
   echo Master position is not changed;
 }
 
-#Some log events of the mysql_upgrade's will cause errors on slave.
+# Some log events of the mysql_upgrade previously caused errors on slave,
+# however with MDEV-4851 this should be ok, so we test it:
 connection slave;
-STOP SLAVE SQL_THREAD;
-source include/wait_for_slave_sql_to_stop.inc;
+SET @old_general_log_state = @@global.general_log;
+SET @old_slow_log_state = @@global.slow_query_log;
+SET @old_log_output = @@global.log_output;
+SET GLOBAL general_log = 'ON';
+SET GLOBAL slow_query_log = 'ON';
+SET GLOBAL log_output = 'FILE';
 
 connection master;
 #With '--force' option, mysql_upgrade always executes all sql statements for upgrading.
+ALTER TABLE mysql.slow_log DROP COLUMN thread_id, DROP COLUMN rows_affected;
+DROP DATABASE `mysqltest-1`;
+sync_slave_with_master;
+
+connection slave;
+SHOW CREATE TABLE mysql.slow_log;
+connection master;
 --exec $MYSQL_UPGRADE --skip-verbose --write-binlog --force --user=root > $MYSQLTEST_VARDIR/log/mysql_upgrade.log 2>&1
 
 let $datadir= `select @@datadir`;
@@ -55,8 +66,15 @@ if ($before_position != $after_position)
   echo Master position has been changed;
 }
 
-DROP DATABASE `mysqltest-1`;
+sync_slave_with_master;
 connection slave;
-DROP DATABASE `#mysql50#mysqltest-1`;
---let $rpl_only_running_threads= 1
+SHOW CREATE TABLE mysql.slow_log;
+SET GLOBAL general_log = 'OFF';
+SET GLOBAL slow_query_log = 'OFF';
+truncate mysql.slow_log;
+truncate mysql.general_log;
+SET GLOBAL general_log = @old_general_log_state;
+SET GLOBAL slow_query_log = @old_slow_log_state;
+SET GLOBAL log_output = @old_log_output;
+
 --source include/rpl_end.inc
diff --git a/mysql-test/suite/rpl/t/rpl_slave_grp_exec.test b/mysql-test/suite/rpl/t/rpl_slave_grp_exec.test
index 928ad7e5e09..9fc8f1320f7 100644
--- a/mysql-test/suite/rpl/t/rpl_slave_grp_exec.test
+++ b/mysql-test/suite/rpl/t/rpl_slave_grp_exec.test
@@ -101,7 +101,9 @@ TRUNCATE t3;
 ALTER TABLE t1 ADD PRIMARY KEY (a);
 ALTER TABLE t2 ADD PRIMARY KEY (a);
 ALTER TABLE t3 ADD PRIMARY KEY (a);
---sync_slave_with_master
+
+#--sync_slave_with_master 
+--connection slave
 RENAME TABLE t3 TO t3_bak;
 
 --connection master
@@ -146,7 +148,7 @@ ALTER TABLE t1 ENGINE=InnoDB;
 ALTER TABLE t2 ENGINE=InnoDB;
 ALTER TABLE t3 ENGINE=InnoDB;
 
---connection slave
+--sync_slave_with_master
 RENAME TABLE t3 TO t3_bak;
 
 --connection master
diff --git a/mysql-test/suite/rpl/t/rpl_start_stop_slave.test b/mysql-test/suite/rpl/t/rpl_start_stop_slave.test
index a38ac8fc6a1..23b25b1bf85 100644
--- a/mysql-test/suite/rpl/t/rpl_start_stop_slave.test
+++ b/mysql-test/suite/rpl/t/rpl_start_stop_slave.test
@@ -38,8 +38,8 @@ set @time_before_kill := (select CURRENT_TIMESTAMP);
 
 --replace_regex /kill [0-9]*/kill <connection_id>/
 --eval kill $connection_id
-let $wait_condition= SELECT COUNT(*) = 0 FROM information_schema.processlist where id=$connection_id;
---source include/wait_condition.inc
+--source include/wait_for_slave_io_to_stop.inc
+
 set @time_after_kill := (select CURRENT_TIMESTAMP);
 
 --echo [Time after the query]
@@ -52,6 +52,7 @@ if(`select TIMESTAMPDIFF(SECOND,@time_after_kill, @time_before_kill) > 60`)
 --echo [Killing of the slave IO thread was successful]
 
 START SLAVE IO_THREAD;
+--source include/wait_for_slave_io_to_start.inc
 
 # Ensure that the slave io thread started properly
 connection master;
diff --git a/mysql-test/suite/sys_vars/r/wsrep_cluster_address_basic.result b/mysql-test/suite/sys_vars/r/wsrep_cluster_address_basic.result
index 8497e220523..4e4893532fb 100644
--- a/mysql-test/suite/sys_vars/r/wsrep_cluster_address_basic.result
+++ b/mysql-test/suite/sys_vars/r/wsrep_cluster_address_basic.result
@@ -1,7 +1,6 @@
 #
 # wsrep_cluster_address
 #
-call mtr.add_suppression("safe_mutex: Found wrong usage of mutex.*");
 # save the initial value
 SET @wsrep_cluster_address_global_saved = @@global.wsrep_cluster_address;
 # default
diff --git a/mysql-test/suite/sys_vars/t/wsrep_cluster_address_basic.test b/mysql-test/suite/sys_vars/t/wsrep_cluster_address_basic.test
index 136c0745e42..6e0767ce853 100644
--- a/mysql-test/suite/sys_vars/t/wsrep_cluster_address_basic.test
+++ b/mysql-test/suite/sys_vars/t/wsrep_cluster_address_basic.test
@@ -4,8 +4,6 @@
 --echo # wsrep_cluster_address
 --echo #
 
-call mtr.add_suppression("safe_mutex: Found wrong usage of mutex.*");
-
 --echo # save the initial value
 SET @wsrep_cluster_address_global_saved = @@global.wsrep_cluster_address;
 
diff --git a/mysql-test/suite/sys_vars/t/wsrep_on_basic.opt b/mysql-test/suite/sys_vars/t/wsrep_on_basic.opt
deleted file mode 100644
index aa1fb6cb155..00000000000
--- a/mysql-test/suite/sys_vars/t/wsrep_on_basic.opt
+++ /dev/null
@@ -1 +0,0 @@
---innodb-lock-schedule-algorithm=FCFS
diff --git a/mysql-test/suite/wsrep/disabled.def b/mysql-test/suite/wsrep/disabled.def
index ab3f9fe3604..11577bfe8b0 100644
--- a/mysql-test/suite/wsrep/disabled.def
+++ b/mysql-test/suite/wsrep/disabled.def
@@ -10,4 +10,3 @@
 #
 ##############################################################################
 
-variables : MDEV-17585 wsrep.variables
diff --git a/mysql-test/suite/wsrep/r/variables.result b/mysql-test/suite/wsrep/r/variables.result
index d1e5b9a4a28..adf01a3bb0d 100644
--- a/mysql-test/suite/wsrep/r/variables.result
+++ b/mysql-test/suite/wsrep/r/variables.result
@@ -1,3 +1,4 @@
+call mtr.add_suppression("WSREP: Initial position was provided by configuration or SST, avoiding override");
 SET @wsrep_provider_options_saved= @@global.wsrep_provider_options;
 SET @wsrep_cluster_address_saved= @@global.wsrep_cluster_address;
 
@@ -37,6 +38,7 @@ wsrep_commit_oooe	#
 wsrep_commit_oool	#
 wsrep_commit_window	#
 wsrep_connected	#
+wsrep_debug_sync_waiters	#
 wsrep_flow_control_paused	#
 wsrep_flow_control_paused_ns	#
 wsrep_flow_control_recv	#
@@ -264,8 +266,4 @@ SELECT @@global.wsrep_sst_auth;
 @@global.wsrep_sst_auth
 NULL
 SET @@global.wsrep_sst_auth= @wsrep_sst_auth_saved;
-SET GLOBAL wsrep_slave_threads= @wsrep_slave_threads_saved;
-SET GLOBAL wsrep_provider= none;
-SET GLOBAL wsrep_cluster_address= @wsrep_cluster_address_saved;
-SET GLOBAL wsrep_provider_options= @wsrep_provider_options_saved;
 # End of test.
diff --git a/mysql-test/suite/wsrep/t/variables.cnf b/mysql-test/suite/wsrep/t/variables.cnf
new file mode 100644
index 00000000000..b1c96d2614d
--- /dev/null
+++ b/mysql-test/suite/wsrep/t/variables.cnf
@@ -0,0 +1,7 @@
+!include ../my.cnf
+
+[mysqld.1]
+wsrep-on=ON
+wsrep-cluster-address=gcomm://
+wsrep-provider=@ENV.WSREP_PROVIDER
+binlog-format=ROW
diff --git a/mysql-test/suite/wsrep/t/variables.test b/mysql-test/suite/wsrep/t/variables.test
index d3bcdd345af..4d82610987a 100644
--- a/mysql-test/suite/wsrep/t/variables.test
+++ b/mysql-test/suite/wsrep/t/variables.test
@@ -1,5 +1,9 @@
 --source include/have_wsrep.inc
 --source include/force_restart.inc
+--source include/have_innodb.inc
+--source include/galera_have_debug_sync.inc
+
+call mtr.add_suppression("WSREP: Initial position was provided by configuration or SST, avoiding override");
 
 SET @wsrep_provider_options_saved= @@global.wsrep_provider_options;
 SET @wsrep_cluster_address_saved= @@global.wsrep_cluster_address;
@@ -161,10 +165,14 @@ SELECT @@global.wsrep_sst_auth;
 SET @@global.wsrep_sst_auth= @wsrep_sst_auth_saved;
 
 # Reset (for mtr internal checks)
+--disable_query_log
 SET GLOBAL wsrep_slave_threads= @wsrep_slave_threads_saved;
-SET GLOBAL wsrep_provider= none;
+eval SET GLOBAL wsrep_provider= '$WSREP_PROVIDER';
 SET GLOBAL wsrep_cluster_address= @wsrep_cluster_address_saved;
 SET GLOBAL wsrep_provider_options= @wsrep_provider_options_saved;
+--enable_query_log
+
+--source include/galera_wait_ready.inc
 
 --echo # End of test.
 
diff --git a/mysys/hash.c b/mysys/hash.c
index 077895ed677..d29297a5233 100644
--- a/mysys/hash.c
+++ b/mysys/hash.c
@@ -792,14 +792,13 @@ void my_hash_replace(HASH *hash, HASH_SEARCH_STATE *current_record,
 my_bool my_hash_iterate(HASH *hash, my_hash_walk_action action, void *argument)
 {
   uint records, i;
-  HASH_LINK *data;
 
   records= hash->records;
-  data= dynamic_element(&hash->array,0,HASH_LINK*);
 
   for (i= 0 ; i < records ; i++)
   {
-    if ((*action)(data[i].data, argument))
+    if ((*action)(dynamic_element(&hash->array, i, HASH_LINK *)->data,
+                  argument))
       return 1;
   }
   return 0;
diff --git a/mysys/my_error.c b/mysys/my_error.c
index 5f1ca0af55b..20836269939 100644
--- a/mysys/my_error.c
+++ b/mysys/my_error.c
@@ -113,6 +113,9 @@ void my_error(uint nr, myf MyFlags, ...)
   DBUG_ENTER("my_error");
   DBUG_PRINT("my", ("nr: %d  MyFlags: %lu  errno: %d", nr, MyFlags, errno));
 
+  if (errno == 1213)
+    DBUG_ASSERT(0);
+  
   if (!(format = my_get_err_msg(nr)))
     (void) my_snprintf(ebuff, sizeof(ebuff), "Unknown error %d", nr);
   else
diff --git a/mysys_ssl/openssl.c b/mysys_ssl/openssl.c
index e0f3d646ca9..b38d4ba309c 100644
--- a/mysys_ssl/openssl.c
+++ b/mysys_ssl/openssl.c
@@ -15,7 +15,6 @@
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
 
 #include <my_global.h>
-#include <ssl_compat.h>
 
 /*
   The check is only done for OpenSSL 1.1.x.
@@ -25,12 +24,14 @@
 */
 
 #ifndef HAVE_OPENSSL11
+#include <ssl_compat.h>
 int check_openssl_compatibility()
 {
   return 0;
 }
 #else
 #include <openssl/evp.h>
+#include <ssl_compat.h>
 
 static uint testing;
 size_t alloc_size, alloc_count;
diff --git a/scripts/convert-debug-for-diff.sh b/scripts/convert-debug-for-diff.sh
index 60b328d946b..5b3ce05b815 100755
--- a/scripts/convert-debug-for-diff.sh
+++ b/scripts/convert-debug-for-diff.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env perl -i
+#!/usr/bin/perl -i
 #
 # This script converts all numbers that look like addresses or memory sizes,
 # in a debug files generated by --debug (like mysqld --debug-dbug), to #.
diff --git a/scripts/mysql_system_tables_fix.sql b/scripts/mysql_system_tables_fix.sql
index 3949cd8f072..a96c5279ba0 100644
--- a/scripts/mysql_system_tables_fix.sql
+++ b/scripts/mysql_system_tables_fix.sql
@@ -679,14 +679,14 @@ ALTER TABLE db modify Delete_history_priv enum('N','Y') COLLATE utf8_general_ci
 
 UPDATE user SET Delete_history_priv = Super_priv WHERE @had_user_delete_history_priv = 0;
 
-ALTER TABLE user ADD plugin char(64) CHARACTER SET latin1 DEFAULT '' NOT NULL,
-                 ADD authentication_string TEXT NOT NULL;
+ALTER TABLE user ADD plugin char(64) CHARACTER SET latin1 DEFAULT '' NOT NULL AFTER max_user_connections,
+                 ADD authentication_string TEXT NOT NULL AFTER plugin;
 ALTER TABLE user MODIFY plugin char(64) CHARACTER SET latin1 DEFAULT '' NOT NULL,
                  MODIFY authentication_string TEXT NOT NULL;
-ALTER TABLE user ADD password_expired ENUM('N', 'Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL;
-ALTER TABLE user ADD is_role enum('N', 'Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL;
-ALTER TABLE user ADD default_role char(80) binary DEFAULT '' NOT NULL;
-ALTER TABLE user ADD max_statement_time decimal(12,6) DEFAULT 0 NOT NULL;
+ALTER TABLE user ADD password_expired ENUM('N', 'Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL AFTER authentication_string;
+ALTER TABLE user ADD is_role enum('N', 'Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL AFTER password_expired;
+ALTER TABLE user ADD default_role char(80) binary DEFAULT '' NOT NULL AFTER is_role;
+ALTER TABLE user ADD max_statement_time decimal(12,6) DEFAULT 0 NOT NULL AFTER default_role;
 -- Somewhere above, we ran ALTER TABLE user .... CONVERT TO CHARACTER SET utf8 COLLATE utf8_bin.
 --  we want password_expired column to have collation utf8_general_ci.
 ALTER TABLE user MODIFY password_expired ENUM('N', 'Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL;
diff --git a/scripts/mysqld_safe.sh b/scripts/mysqld_safe.sh
index f40a68a3b1e..98398e5421f 100644
--- a/scripts/mysqld_safe.sh
+++ b/scripts/mysqld_safe.sh
@@ -428,25 +428,10 @@ mysqld_ld_preload_text() {
   echo "$text"
 }
 
-
-mysql_config=
-get_mysql_config() {
-  if [ -z "$mysql_config" ]; then
-    mysql_config=`echo "$0" | sed 's,/[^/][^/]*$,/mysql_config,'`
-    if [ ! -x "$mysql_config" ]; then
-      log_error "Can not run mysql_config $@ from '$mysql_config'"
-      exit 1
-    fi
-  fi
-
-  "$mysql_config" "$@"
-}
-
-
 # set_malloc_lib LIB
 # - If LIB is empty, do nothing and return
-# - If LIB starts with 'tcmalloc' or 'jemalloc', look for the shared library in
-#   /usr/lib, /usr/lib64 and then pkglibdir.
+# - If LIB starts with 'tcmalloc' or 'jemalloc', look for the shared library
+#   using `ldconfig`.
 #   tcmalloc is part of the Google perftools project.
 # - If LIB is an absolute path, assume it is a malloc shared library
 #
@@ -454,28 +439,28 @@ get_mysql_config() {
 # running mysqld.  See ld.so for details.
 set_malloc_lib() {
   malloc_lib="$1"
-
   if expr "$malloc_lib" : "\(tcmalloc\|jemalloc\)" > /dev/null ; then
-    pkglibdir=`get_mysql_config --variable=pkglibdir`
-    where=''
-    # This list is kept intentionally simple.  Simply set --malloc-lib
-    # to a full path if another location is desired.
-    for libdir in /usr/lib /usr/lib64 "$pkglibdir" "$pkglibdir/mysql"; do
-       tmp=`echo "$libdir/lib$malloc_lib.so".[0-9]`
-       where="$where $libdir"
-       # log_notice "DEBUG: Checking for malloc lib '$tmp'"
-       [ -r "$tmp" ] || continue
-       malloc_lib="$tmp"
-       where=''
-       break
-    done
+    if ! my_which ldconfig > /dev/null 2>&1
+    then
+      log_error "ldconfig command not found, required for ldconfig -p"
+      exit 1
+    fi
+    # format from ldconfig:
+    # "libjemalloc.so.1 (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libjemalloc.so.1"
+    libmalloc_path="$(ldconfig -p | sed -n "/lib${malloc_lib}/p" | cut -d '>' -f2)"
 
-    if [ -n "$where" ]; then
-      log_error "no shared library for lib$malloc_lib.so.[0-9] found in$where"
+    if [ -z "$libmalloc_path" ]; then
+      log_error "no shared library for lib$malloc_lib.so.[0-9] found."
       exit 1
     fi
-  fi
 
+    for f in $libmalloc_path; do
+      if [ -f "$f" ]; then
+        malloc_lib=$f # get the first path if many
+        break
+      fi
+    done
+  fi
   # Allow --malloc-lib='' to override other settings
   [ -z  "$malloc_lib" ] && return
 
@@ -492,7 +477,6 @@ set_malloc_lib() {
       exit 1
       ;;
   esac
-
   add_mysqld_ld_preload "$malloc_lib"
 }
 
diff --git a/scripts/wsrep_sst_common.sh b/scripts/wsrep_sst_common.sh
index 16607470f2c..5e134570881 100644
--- a/scripts/wsrep_sst_common.sh
+++ b/scripts/wsrep_sst_common.sh
@@ -45,28 +45,68 @@ case "$1" in
         case "${WSREP_SST_OPT_ADDR}" in
         \[*)
             # IPv6
+            # Remove the starting and ending square brackets, if present:
             addr_no_bracket=${WSREP_SST_OPT_ADDR#\[}
             readonly WSREP_SST_OPT_HOST_UNESCAPED=${addr_no_bracket%%\]*}
+            # Square brackets are needed in most cases:
             readonly WSREP_SST_OPT_HOST="[${WSREP_SST_OPT_HOST_UNESCAPED}]"
+            # Some utilities and subsequent code require an address
+            # without square brackets:
             readonly WSREP_SST_OPT_HOST_ESCAPED="\\[${WSREP_SST_OPT_HOST_UNESCAPED}\\]"
+            readonly WSREP_SST_OPT_HOST_IPv6=1
             ;;
         *)
             readonly WSREP_SST_OPT_HOST=${WSREP_SST_OPT_ADDR%%[:/]*}
             readonly WSREP_SST_OPT_HOST_UNESCAPED=$WSREP_SST_OPT_HOST
             readonly WSREP_SST_OPT_HOST_ESCAPED=$WSREP_SST_OPT_HOST
+            readonly WSREP_SST_OPT_HOST_IPv6=0
             ;;
         esac
+        # Let's remove the leading part that contains the host address:
         remain=${WSREP_SST_OPT_ADDR#${WSREP_SST_OPT_HOST_ESCAPED}}
+        # Let's remove the ":" character that separates the port number
+        # from the hostname:
         remain=${remain#:}
+        # Extract the port number from the address - all characters
+        # up to "/" (if present):
         readonly WSREP_SST_OPT_ADDR_PORT=${remain%%/*}
-        remain=${remain#*/}
-        readonly WSREP_SST_OPT_MODULE=${remain%%/*}
-        readonly WSREP_SST_OPT_PATH=${WSREP_SST_OPT_ADDR#*/}
+        # If the "/" character is present, then the path is not empty:
+        if [ "${remain#*/}" != "${remain}" ]; then
+            # This operation removes everything up to the "/" character,
+            # effectively removing the port number from the string:
+            readonly WSREP_SST_OPT_PATH=${remain#*/}
+        else
+            readonly WSREP_SST_OPT_PATH=""
+        fi
+        # The rest of the string is the same as the path (for now):
+        remain=${WSREP_SST_OPT_PATH}
+        # If there is one more "/" in the string, then everything before
+        # it will be the module name, otherwise the module name is empty:
+        if [ "${remain%%/*}" != "${remain}" ]; then
+            # This operation removes the tail after the very first
+            # occurrence of the "/" character (inclusively):
+            readonly WSREP_SST_OPT_MODULE=${remain%%/*}
+        else
+            readonly WSREP_SST_OPT_MODULE=""
+        fi
+        # Remove the module name part from the string, which ends with "/":
         remain=${WSREP_SST_OPT_PATH#*/}
+        # If the rest of the string does not match the original, then there
+        # was something else besides the module name:
         if [ "$remain" != "${WSREP_SST_OPT_PATH}" ]; then
+            # Extract the part that matches the LSN by removing all
+            # characters starting from the very first "/":
             readonly WSREP_SST_OPT_LSN=${remain%%/*}
+            # Exctract everything after the first occurrence of
+            # the "/" character in the string:
             remain=${remain#*/}
+            # If the remainder does not match the original string,
+            # then there is something else (the version number in
+            # our case):
             if [ "$remain" != "${WSREP_SST_OPT_LSN}" ]; then
+                # Let's extract the version number by removing the tail
+                # after the very first occurence of the "/" character
+                # (inclusively):
                 readonly WSREP_SST_OPT_SST_VER=${remain%%/*}
             else
                 readonly WSREP_SST_OPT_SST_VER=""
diff --git a/scripts/wsrep_sst_mariabackup.sh b/scripts/wsrep_sst_mariabackup.sh
index 573e747c55f..91f9831af1c 100644
--- a/scripts/wsrep_sst_mariabackup.sh
+++ b/scripts/wsrep_sst_mariabackup.sh
@@ -188,27 +188,48 @@ get_transfer()
             if nc -h 2>&1 | grep -q ncat;then 
                 # Ncat
                 tcmd="nc -l ${TSST_PORT}"
-            elif nc -h 2>&1 | grep -q -- '-d\>';then
+            elif nc -h 2>&1 | grep -qw -- '-d\>';then
                 # Debian netcat
-                tcmd="nc -dl ${TSST_PORT}"
+                if [ $WSREP_SST_OPT_HOST_IPv6 -eq 1 ];then
+                    # When host is not explicitly specified (when only the port
+                    # is specified) netcat can only bind to an IPv4 address if
+                    # the "-6" option is not explicitly specified:
+                    tcmd="nc -dl -6 ${TSST_PORT}"
+                else
+                    tcmd="nc -dl ${TSST_PORT}"
+                fi
             else
                 # traditional netcat
                 tcmd="nc -l -p ${TSST_PORT}"
             fi
         else
+            # Check to see if netcat supports the '-N' flag.
+            # -N Shutdown the network socket after EOF on stdin
+            # If it supports the '-N' flag, then we need to use the '-N'
+            # flag, otherwise the transfer will stay open after the file
+            # transfer and cause the command to timeout.
+            # Older versions of netcat did not need this flag and will
+            # return an error if the flag is used.
+            #
+            tcmd_extra=""
+            if nc -h 2>&1 | grep -qw -- -N; then
+                tcmd_extra+="-N"
+		wsrep_log_info "Using nc -N"
+            fi
+
+            # netcat doesn't understand [] around IPv6 address
             if nc -h 2>&1 | grep -q ncat;then
                 # Ncat
-                tcmd="nc ${REMOTEIP} ${TSST_PORT}"
-            elif nc -h 2>&1 | grep -q -- '-d\>';then
+                wsrep_log_info "Using Ncat as streamer"
+                tcmd="nc ${tcmd_extra} ${WSREP_SST_OPT_HOST_UNESCAPED} ${TSST_PORT}"
+            elif nc -h 2>&1 | grep -qw -- '-d\>';then
                 # Debian netcat
-                if nc -h 2>&1 | grep -q -- '-N\>';then
-                   tcmd="nc -N ${REMOTEIP} ${TSST_PORT}"
-                else
-                   tcmd="nc ${REMOTEIP} ${TSST_PORT}"
-                fi
+                wsrep_log_info "Using Debian netcat as streamer"
+                tcmd="nc ${tcmd_extra} ${WSREP_SST_OPT_HOST_UNESCAPED} ${TSST_PORT}"
             else
                 # traditional netcat
-                tcmd="nc -q0 ${REMOTEIP} ${TSST_PORT}"
+                wsrep_log_info "Using traditional netcat as streamer"
+                tcmd="nc -q0 ${tcmd_extra} ${WSREP_SST_OPT_HOST_UNESCAPED} ${TSST_PORT}"
             fi
         fi
     else
@@ -526,25 +547,11 @@ kill_xtrabackup()
 
 setup_ports()
 {
+    SST_PORT=${WSREP_SST_OPT_ADDR_PORT}
     if [[ "$WSREP_SST_OPT_ROLE"  == "donor" ]];then
-        if [ "${WSREP_SST_OPT_ADDR#\[}" != "$WSREP_SST_OPT_ADDR" ]; then
-            remain=$(echo $WSREP_SST_OPT_ADDR | awk -F '\\][:/]' '{ print $2 }')
-            REMOTEIP=$(echo $WSREP_SST_OPT_ADDR | awk -F '\\]:' '{ print $1 }')"]"
-            SST_PORT=$(echo $remain | awk -F '[:/]' '{ print $1 }')
-            lsn=$(echo $remain | awk -F '[:/]' '{ print $3 }')
-            sst_ver=$(echo $remain | awk -F '[:/]' '{ print $4 }')
-        else
-            SST_PORT=$(echo $WSREP_SST_OPT_ADDR | awk -F '[:/]' '{ print $2 }')
-            REMOTEIP=$(echo $WSREP_SST_OPT_ADDR | awk -F ':' '{ print $1 }')
-            lsn=$(echo $WSREP_SST_OPT_ADDR | awk -F '[:/]' '{ print $4 }')
-            sst_ver=$(echo $WSREP_SST_OPT_ADDR | awk -F '[:/]' '{ print $5 }')
-        fi
-    else
-        if [ "${WSREP_SST_OPT_ADDR#\[}" != "$WSREP_SST_OPT_ADDR" ]; then
-            SST_PORT=$(echo ${WSREP_SST_OPT_ADDR} | awk -F '\\]:' '{ print $2 }')
-        else
-            SST_PORT=$(echo ${WSREP_SST_OPT_ADDR} | awk -F ':' '{ print $2 }')
-        fi
+        REMOTEIP=${WSREP_SST_OPT_HOST}
+        lsn=${WSREP_SST_OPT_LSN}
+        sst_ver=${WSREP_SST_OPT_SST_VER}
     fi
 }
 
@@ -704,9 +711,11 @@ if ${INNOBACKUPEX_BIN} /tmp --help 2>/dev/null | grep -q -- '--version-check'; t
     disver="--no-version-check"
 fi
 
+iopts+=" --databases-exclude=\"lost+found\""
+
 if [[ ${FORCE_FTWRL:-0} -eq 1 ]];then 
     wsrep_log_info "Forcing FTWRL due to environment variable FORCE_FTWRL equal to $FORCE_FTWRL"
-    iopts+=" --no-backup-locks "
+    iopts+=" --no-backup-locks"
 fi
 
 INNOEXTRA=$WSREP_SST_OPT_MYSQLD
diff --git a/sql/handler.cc b/sql/handler.cc
index 664289eaa27..78b6afd932c 100644
--- a/sql/handler.cc
+++ b/sql/handler.cc
@@ -5967,6 +5967,7 @@ extern "C" enum icp_result handler_index_cond_check(void* h_arg)
   THD *thd= h->table->in_use;
   enum icp_result res;
 
+  DEBUG_SYNC(thd, "handler_index_cond_check");
   enum thd_kill_levels abort_at= h->has_transactions() ?
     THD_ABORT_SOFTLY : THD_ABORT_ASAP;
   if (thd_kill_level(thd) > abort_at)
diff --git a/sql/log.cc b/sql/log.cc
index c77500bb9f5..d119b88c4e0 100644
--- a/sql/log.cc
+++ b/sql/log.cc
@@ -586,9 +586,11 @@ bool LOGGER::is_log_table_enabled(uint log_table_type)
 {
   switch (log_table_type) {
   case QUERY_LOG_SLOW:
-    return (table_log_handler != NULL) && global_system_variables.sql_log_slow;
+    return (table_log_handler != NULL) && global_system_variables.sql_log_slow
+            && (log_output_options & LOG_TABLE);
   case QUERY_LOG_GENERAL:
-    return (table_log_handler != NULL) && opt_log ;
+    return (table_log_handler != NULL) && opt_log
+            && (log_output_options & LOG_TABLE);
   default:
     DBUG_ASSERT(0);
     return FALSE;                             /* make compiler happy */
@@ -10446,7 +10448,8 @@ binlog_checksum_update(MYSQL_THD thd, struct st_mysql_sys_var *var,
 }
 
 
-static int show_binlog_vars(THD *thd, SHOW_VAR *var, char *buff)
+static int show_binlog_vars(THD *thd, SHOW_VAR *var, void *,
+                            system_status_var *status_var, enum_var_type)
 {
   mysql_bin_log.set_status_variables(thd);
   var->type= SHOW_ARRAY;
diff --git a/sql/log_event.cc b/sql/log_event.cc
index a0c3efcb85b..4792a2c9f0e 100644
--- a/sql/log_event.cc
+++ b/sql/log_event.cc
@@ -2056,7 +2056,7 @@ Log_event* Log_event::read_log_event(const char* buf, uint event_len,
     else
       DBUG_RETURN(NULL);
 #else
-    *error= ER(ER_BINLOG_READ_EVENT_CHECKSUM_FAILURE);
+    *error= ER_THD_OR_DEFAULT(current_thd, ER_BINLOG_READ_EVENT_CHECKSUM_FAILURE);
     sql_print_error("%s", *error);
     DBUG_RETURN(NULL);
 #endif
diff --git a/sql/mysqld.cc b/sql/mysqld.cc
index d6555702d9c..8b013e58f27 100644
--- a/sql/mysqld.cc
+++ b/sql/mysqld.cc
@@ -8452,8 +8452,8 @@ show_ssl_get_server_not_after(THD *thd, SHOW_VAR *var, char *buff,
 
 #endif /* HAVE_OPENSSL && !EMBEDDED_LIBRARY */
 
-static int show_default_keycache(THD *thd, SHOW_VAR *var, char *buff,
-                                 enum enum_var_type scope)
+static int show_default_keycache(THD *thd, SHOW_VAR *var, void *buff,
+                                 system_status_var *, enum_var_type)
 {
   struct st_data {
     KEY_CACHE_STATISTICS stats;
@@ -8486,7 +8486,7 @@ static int show_default_keycache(THD *thd, SHOW_VAR *var, char *buff,
 
   v->name= 0;
 
-  DBUG_ASSERT((char*)(v+1) <= buff + SHOW_VAR_FUNC_BUFF_SIZE);
+  DBUG_ASSERT((char*)(v+1) <= static_cast<char*>(buff) + SHOW_VAR_FUNC_BUFF_SIZE);
 
 #undef set_one_keycache_var
 
@@ -8510,8 +8510,8 @@ static int show_memory_used(THD *thd, SHOW_VAR *var, char *buff,
 
 
 #ifndef DBUG_OFF
-static int debug_status_func(THD *thd, SHOW_VAR *var, char *buff,
-                             enum enum_var_type scope)
+static int debug_status_func(THD *thd, SHOW_VAR *var, void *buff,
+                             system_status_var *, enum_var_type)
 {
 #define add_var(X,Y,Z)                  \
   v->name= X;                           \
diff --git a/sql/opt_range.cc b/sql/opt_range.cc
index a00e0ebdfb0..ec1f60314d3 100644
--- a/sql/opt_range.cc
+++ b/sql/opt_range.cc
@@ -1858,6 +1858,9 @@ SEL_ARG::SEL_ARG(SEL_ARG &arg) :Sql_alloc()
   next_key_part=arg.next_key_part;
   max_part_no= arg.max_part_no;
   use_count=1; elements=1;
+  next= 0;
+  if (next_key_part)
+    ++next_key_part->use_count;
 }
 
 
@@ -8907,9 +8910,15 @@ tree_or(RANGE_OPT_PARAM *param,SEL_TREE *tree1,SEL_TREE *tree2)
   }
   bool no_imerge_from_ranges= FALSE;
 
+  SEL_TREE *rt1= tree1;
+  SEL_TREE *rt2= tree2;
   /* Build the range part of the tree for the formula (1) */ 
   if (sel_trees_can_be_ored(param, tree1, tree2, &ored_keys))
   {
+    if (no_merges1)
+      rt1= new SEL_TREE(tree1, TRUE, param);
+    if (no_merges2)
+      rt2= new SEL_TREE(tree2, TRUE, param);
     bool must_be_ored= sel_trees_must_be_ored(param, tree1, tree2, ored_keys);
     no_imerge_from_ranges= must_be_ored;
 
@@ -8967,12 +8976,6 @@ tree_or(RANGE_OPT_PARAM *param,SEL_TREE *tree1,SEL_TREE *tree2)
   else if (!no_ranges1 && !no_ranges2 && !no_imerge_from_ranges)
   {
     /* Build the imerge part of the tree for the formula (1) */
-    SEL_TREE *rt1= tree1;
-    SEL_TREE *rt2= tree2;
-    if (no_merges1)
-      rt1= new SEL_TREE(tree1, TRUE, param);
-    if (no_merges2)
-      rt2= new SEL_TREE(tree2, TRUE, param);
     if (!rt1 || !rt2 ||
         result->merges.push_back(imerge_from_ranges) ||
         imerge_from_ranges->or_sel_tree(param, rt1) ||
@@ -9637,10 +9640,11 @@ key_or(RANGE_OPT_PARAM *param, SEL_ARG *key1,SEL_ARG *key2)
 
       if (!tmp->next_key_part)
       {
+	SEL_ARG *key2_next= key2->next;
         if (key2->use_count)
 	{
 	  SEL_ARG *key2_cpy= new SEL_ARG(*key2);
-          if (key2_cpy)
+          if (!key2_cpy)
             return 0;
           key2= key2_cpy;
 	}
@@ -9661,7 +9665,7 @@ key_or(RANGE_OPT_PARAM *param, SEL_ARG *key1,SEL_ARG *key2)
             Move on to next range in key2
           */
           key2->increment_use_count(-1); // Free not used tree
-          key2=key2->next;
+          key2=key2_next;
           continue;
         }
         else
diff --git a/sql/sql_class.h b/sql/sql_class.h
index 0645452c594..10caa668e9e 100644
--- a/sql/sql_class.h
+++ b/sql/sql_class.h
@@ -6337,11 +6337,11 @@ public:
 /**
   SP Bulk execution safe
 */
-#define CF_SP_BULK_SAFE (1U << 20)
+#define CF_PS_ARRAY_BINDING_SAFE (1U << 20)
 /**
   SP Bulk execution optimized
 */
-#define CF_SP_BULK_OPTIMIZED (1U << 21)
+#define CF_PS_ARRAY_BINDING_OPTIMIZED (1U << 21)
 /**
   If command creates or drops a table
 */
diff --git a/sql/sql_parse.cc b/sql/sql_parse.cc
index 6802816caaf..8408771692d 100644
--- a/sql/sql_parse.cc
+++ b/sql/sql_parse.cc
@@ -583,19 +583,21 @@ void init_update_queries(void)
                                             CF_CAN_GENERATE_ROW_EVENTS |
                                             CF_OPTIMIZER_TRACE |
                                             CF_CAN_BE_EXPLAINED |
-                                            CF_UPDATES_DATA | CF_SP_BULK_SAFE;
+                                            CF_UPDATES_DATA |
+                                            CF_PS_ARRAY_BINDING_SAFE;
   sql_command_flags[SQLCOM_UPDATE_MULTI]=   CF_CHANGES_DATA | CF_REEXECUTION_FRAGILE |
                                             CF_CAN_GENERATE_ROW_EVENTS |
                                             CF_OPTIMIZER_TRACE |
                                             CF_CAN_BE_EXPLAINED |
-                                            CF_UPDATES_DATA | CF_SP_BULK_SAFE;
+                                            CF_UPDATES_DATA |
+                                            CF_PS_ARRAY_BINDING_SAFE;
   sql_command_flags[SQLCOM_INSERT]=	    CF_CHANGES_DATA | CF_REEXECUTION_FRAGILE |
                                             CF_CAN_GENERATE_ROW_EVENTS |
                                             CF_OPTIMIZER_TRACE |
                                             CF_CAN_BE_EXPLAINED |
                                             CF_INSERTS_DATA |
-                                            CF_SP_BULK_SAFE |
-                                            CF_SP_BULK_OPTIMIZED;
+                                            CF_PS_ARRAY_BINDING_SAFE |
+                                            CF_PS_ARRAY_BINDING_OPTIMIZED;
   sql_command_flags[SQLCOM_INSERT_SELECT]=  CF_CHANGES_DATA | CF_REEXECUTION_FRAGILE |
                                             CF_CAN_GENERATE_ROW_EVENTS |
                                             CF_OPTIMIZER_TRACE |
@@ -605,7 +607,8 @@ void init_update_queries(void)
                                             CF_CAN_GENERATE_ROW_EVENTS |
                                             CF_OPTIMIZER_TRACE |
                                             CF_CAN_BE_EXPLAINED |
-                                            CF_SP_BULK_SAFE | CF_DELETES_DATA;
+                                            CF_DELETES_DATA |
+                                            CF_PS_ARRAY_BINDING_SAFE;
   sql_command_flags[SQLCOM_DELETE_MULTI]=   CF_CHANGES_DATA | CF_REEXECUTION_FRAGILE |
                                             CF_CAN_GENERATE_ROW_EVENTS |
                                             CF_OPTIMIZER_TRACE |
@@ -615,8 +618,9 @@ void init_update_queries(void)
                                             CF_CAN_GENERATE_ROW_EVENTS |
                                             CF_OPTIMIZER_TRACE |
                                             CF_CAN_BE_EXPLAINED |
-                                            CF_INSERTS_DATA | CF_SP_BULK_SAFE |
-                                            CF_SP_BULK_OPTIMIZED;
+                                            CF_INSERTS_DATA |
+                                            CF_PS_ARRAY_BINDING_SAFE |
+                                            CF_PS_ARRAY_BINDING_OPTIMIZED;
   sql_command_flags[SQLCOM_REPLACE_SELECT]= CF_CHANGES_DATA | CF_REEXECUTION_FRAGILE |
                                             CF_CAN_GENERATE_ROW_EVENTS |
                                             CF_OPTIMIZER_TRACE |
@@ -5678,23 +5682,20 @@ mysql_execute_command(THD *thd)
           ! lex->spname->m_explicit_name)
       {
         /* DROP FUNCTION <non qualified name> */
-        udf_func *udf = find_udf(lex->spname->m_name.str,
-                                 lex->spname->m_name.length);
-        if (udf)
+        enum drop_udf_result rc= mysql_drop_function(thd,
+                                                     &lex->spname->m_name);
+        if (rc == UDF_DEL_RESULT_DELETED)
         {
-          if (check_access(thd, DELETE_ACL, "mysql", NULL, NULL, 1, 0))
-            goto error;
+          my_ok(thd);
+          break;
+        }
 
-          if (!(res = mysql_drop_function(thd, &lex->spname->m_name)))
-          {
-            my_ok(thd);
-            break;
-          }
-          my_error(ER_SP_DROP_FAILED, MYF(0),
-                   "FUNCTION (UDF)", lex->spname->m_name.str);
+        if (rc == UDF_DEL_RESULT_ERROR)
           goto error;
-        }
 
+        DBUG_ASSERT(rc == UDF_DEL_RESULT_ABSENT);
+
+        // If there was no current database, so it can not be SP
         if (lex->spname->m_db.str == NULL)
         {
           if (lex->if_exists())
diff --git a/sql/sql_prepare.cc b/sql/sql_prepare.cc
index a1ca7cc7af2..b3c5700a0b7 100644
--- a/sql/sql_prepare.cc
+++ b/sql/sql_prepare.cc
@@ -4360,7 +4360,7 @@ Prepared_statement::execute_bulk_loop(String *expanded_query,
     return TRUE;
   }
 
-  if (!(sql_command_flags[lex->sql_command] & CF_SP_BULK_SAFE))
+  if (!(sql_command_flags[lex->sql_command] & CF_PS_ARRAY_BINDING_SAFE))
   {
     DBUG_PRINT("error", ("Command is not supported in bulk execution."));
     my_error(ER_UNSUPPORTED_PS, MYF(0));
@@ -4402,7 +4402,7 @@ Prepared_statement::execute_bulk_loop(String *expanded_query,
       Here we set parameters for not optimized commands,
       optimized commands do it inside thier internal loop.
     */
-    if (!(sql_command_flags[lex->sql_command] & CF_SP_BULK_OPTIMIZED))
+    if (!(sql_command_flags[lex->sql_command] & CF_PS_ARRAY_BINDING_OPTIMIZED))
     {
       if (set_bulk_parameters(TRUE))
       {
diff --git a/sql/sql_select.cc b/sql/sql_select.cc
index aaa4b4d6b8b..738e1912994 100644
--- a/sql/sql_select.cc
+++ b/sql/sql_select.cc
@@ -392,11 +392,14 @@ bool handle_select(THD *thd, LEX *lex, select_result *result,
       If LIMIT ROWS EXAMINED interrupted query execution, issue a warning,
       continue with normal processing and produce an incomplete query result.
     */
+    bool saved_abort_on_warning= thd->abort_on_warning;
+    thd->abort_on_warning= false;
     push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN,
                         ER_QUERY_EXCEEDED_ROWS_EXAMINED_LIMIT,
                         ER_THD(thd, ER_QUERY_EXCEEDED_ROWS_EXAMINED_LIMIT),
                         thd->accessed_rows_and_keys,
                         thd->lex->limit_rows_examined->val_uint());
+    thd->abort_on_warning= saved_abort_on_warning;
     thd->reset_killed();
   }
   /* Disable LIMIT ROWS EXAMINED after query execution. */
diff --git a/sql/sql_type.cc b/sql/sql_type.cc
index 9d3a47adfa5..a25aa236b16 100644
--- a/sql/sql_type.cc
+++ b/sql/sql_type.cc
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015  MariaDB Foundation.
+   Copyright (c) 2015, 2020, MariaDB
 
  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
@@ -3867,8 +3867,11 @@ cmp_item *Type_handler_temporal_with_date::make_cmp_item(THD *thd,
 
 /***************************************************************************/
 
-static int srtcmp_in(CHARSET_INFO *cs, const String *x,const String *y)
+static int srtcmp_in(const void *cs_, const void *x_, const void *y_)
 {
+  const CHARSET_INFO *cs= static_cast<const CHARSET_INFO *>(cs_);
+  const String *x= static_cast<const String *>(x_);
+  const String *y= static_cast<const String *>(y_);
   return cs->coll->strnncollsp(cs,
                                (uchar *) x->ptr(),x->length(),
                                (uchar *) y->ptr(),y->length());
diff --git a/sql/sql_udf.cc b/sql/sql_udf.cc
index 3a01ea1118b..d75b1cdedde 100644
--- a/sql/sql_udf.cc
+++ b/sql/sql_udf.cc
@@ -58,6 +58,8 @@ static udf_func *add_udf(LEX_CSTRING *name, Item_result ret,
                          const char *dl, Item_udftype typ);
 static void del_udf(udf_func *udf);
 static void *find_udf_dl(const char *dl);
+static bool find_udf_everywhere(THD* thd, const LEX_CSTRING &name,
+                                TABLE *table);
 
 static const char *init_syms(udf_func *tmp, char *nm)
 {
@@ -417,6 +419,41 @@ static udf_func *add_udf(LEX_CSTRING *name, Item_result ret, const char *dl,
   return tmp;
 }
 
+/**
+  Find record with the udf in the udf func table
+
+  @param exact_name      udf name
+  @param table           table of mysql.func
+
+  @retval TRUE  found
+  @retral FALSE not found
+*/
+
+static bool find_udf_in_table(const LEX_CSTRING &exact_name, TABLE *table)
+{
+  table->use_all_columns();
+  table->field[0]->store(exact_name.str, exact_name.length, &my_charset_bin);
+  return (!table->file->ha_index_read_idx_map(table->record[0], 0,
+                                              (uchar*) table->field[0]->ptr,
+                                              HA_WHOLE_KEY,
+                                              HA_READ_KEY_EXACT));
+}
+
+static bool remove_udf_in_table(const LEX_CSTRING &exact_name, TABLE *table)
+{
+  if (find_udf_in_table(exact_name, table))
+  {
+    int error;
+    if ((error= table->file->ha_delete_row(table->record[0])))
+    {
+      table->file->print_error(error, MYF(0));
+      return TRUE;
+    }
+  }
+  return FALSE;
+}
+
+
 /*
   Drop user defined function.
 
@@ -433,8 +470,7 @@ static int mysql_drop_function_internal(THD *thd, udf_func *udf, TABLE *table)
 {
   DBUG_ENTER("mysql_drop_function_internal");
 
-  const char *exact_name_str= udf->name.str;
-  size_t exact_name_len= udf->name.length;
+  const LEX_CSTRING exact_name= udf->name;
 
   del_udf(udf);
   /*
@@ -447,18 +483,17 @@ static int mysql_drop_function_internal(THD *thd, udf_func *udf, TABLE *table)
   if (!table)
     DBUG_RETURN(1);
 
-  table->use_all_columns();
-  table->field[0]->store(exact_name_str, exact_name_len, &my_charset_bin);
-  if (!table->file->ha_index_read_idx_map(table->record[0], 0,
-                                          (uchar*) table->field[0]->ptr,
-                                          HA_WHOLE_KEY,
-                                          HA_READ_KEY_EXACT))
-  {
-    int error;
-    if (unlikely((error= table->file->ha_delete_row(table->record[0]))))
-      table->file->print_error(error, MYF(0));
-  }
-  DBUG_RETURN(0);
+  bool ret= remove_udf_in_table(exact_name, table);
+  DBUG_RETURN(ret);
+}
+
+
+static TABLE *open_udf_func_table(THD *thd)
+{
+  TABLE_LIST tables;
+  tables.init_one_table(&MYSQL_SCHEMA_NAME, &MYSQL_FUNC_NAME,
+                        &MYSQL_FUNC_NAME, TL_WRITE);
+  return open_ltable(thd, &tables, TL_WRITE, MYSQL_LOCK_IGNORE_TIMEOUT);
 }
 
 
@@ -505,8 +540,7 @@ int mysql_create_function(THD *thd,udf_func *udf)
   if (check_ident_length(&udf->name))
     DBUG_RETURN(1);
 
-  tables.init_one_table(&MYSQL_SCHEMA_NAME, &MYSQL_FUNC_NAME, 0, TL_WRITE);
-  table= open_ltable(thd, &tables, TL_WRITE, MYSQL_LOCK_IGNORE_TIMEOUT);
+  table= open_udf_func_table(thd);
 
   mysql_rwlock_wrlock(&THR_LOCK_udf);
   DEBUG_SYNC(current_thd, "mysql_create_function_after_lock");
@@ -606,42 +640,65 @@ err:
 }
 
 
-int mysql_drop_function(THD *thd, const LEX_CSTRING *udf_name)
+enum drop_udf_result mysql_drop_function(THD *thd, const LEX_CSTRING *udf_name)
 {
   TABLE *table;
-  TABLE_LIST tables;
   udf_func *udf;
   DBUG_ENTER("mysql_drop_function");
 
+  if (thd->locked_tables_mode)
+  {
+    my_error(ER_LOCK_OR_ACTIVE_TRANSACTION, MYF(0));
+    DBUG_RETURN(UDF_DEL_RESULT_ERROR);
+  }
+
+  if (!(table= open_udf_func_table(thd)))
+    DBUG_RETURN(UDF_DEL_RESULT_ERROR);
+
+  // Fast pre-check
+  if (!mysql_rwlock_tryrdlock(&THR_LOCK_udf))
+  {
+    bool found= find_udf_everywhere(thd, *udf_name, table);
+    mysql_rwlock_unlock(&THR_LOCK_udf);
+    if (!found)
+    {
+      close_mysql_tables(thd);
+      DBUG_RETURN(UDF_DEL_RESULT_ABSENT);
+    }
+  }
+
   if (!initialized)
   {
+    close_mysql_tables(thd);
     if (opt_noacl)
-      my_error(ER_FUNCTION_NOT_DEFINED, MYF(0), udf_name->str);
-    else
-      my_message(ER_OUT_OF_RESOURCES, ER_THD(thd, ER_OUT_OF_RESOURCES),
-                 MYF(0));
-    DBUG_RETURN(1);
-  }
+      DBUG_RETURN(UDF_DEL_RESULT_ABSENT); // SP should be checked
 
-  tables.init_one_table(&MYSQL_SCHEMA_NAME, &MYSQL_FUNC_NAME, 0, TL_WRITE);
-  table= open_ltable(thd, &tables, TL_WRITE, MYSQL_LOCK_IGNORE_TIMEOUT);
+    my_message(ER_OUT_OF_RESOURCES, ER_THD(thd, ER_OUT_OF_RESOURCES), MYF(0));
+    DBUG_RETURN(UDF_DEL_RESULT_ERROR);
+  }
 
   mysql_rwlock_wrlock(&THR_LOCK_udf);
+
+  // re-check under protection
+  if (!find_udf_everywhere(thd, *udf_name, table))
+  {
+    close_mysql_tables(thd);
+    mysql_rwlock_unlock(&THR_LOCK_udf);
+    DBUG_RETURN(UDF_DEL_RESULT_ABSENT);
+  }
+
+  if (check_access(thd, DELETE_ACL, "mysql", NULL, NULL, 1, 0))
+    goto err;
+
+
   DEBUG_SYNC(current_thd, "mysql_drop_function_after_lock");
+
   if (!(udf= (udf_func*) my_hash_search(&udf_hash, (uchar*) udf_name->str,
                                         (uint) udf_name->length)) )
   {
-    if (thd->lex->check_exists)
-    {
-      push_warning_printf(thd, Sql_condition::WARN_LEVEL_NOTE,
-                          ER_FUNCTION_NOT_DEFINED,
-                          ER_THD(thd, ER_FUNCTION_NOT_DEFINED),
-                          udf_name->str);
-      goto done;
-    }
-
-    my_error(ER_FUNCTION_NOT_DEFINED, MYF(0), udf_name->str);
-    goto err;
+    if (remove_udf_in_table(*udf_name, table))
+      goto err;
+    goto done;
   }
 
   if (mysql_drop_function_internal(thd, udf, table))
@@ -655,13 +712,24 @@ done:
     while binlogging, to avoid binlog inconsistency.
   */
   if (write_bin_log(thd, TRUE, thd->query(), thd->query_length()))
-    DBUG_RETURN(1);
+    DBUG_RETURN(UDF_DEL_RESULT_ERROR);
 
-  DBUG_RETURN(0);
+  close_mysql_tables(thd);
+  DBUG_RETURN(UDF_DEL_RESULT_DELETED);
 
 err:
+  close_mysql_tables(thd);
   mysql_rwlock_unlock(&THR_LOCK_udf);
-  DBUG_RETURN(1);
+  DBUG_RETURN(UDF_DEL_RESULT_ERROR);
+}
+
+static bool find_udf_everywhere(THD* thd, const LEX_CSTRING &name,
+                                TABLE *table)
+{
+  if (initialized && my_hash_search(&udf_hash, (uchar*) name.str, name.length))
+    return true;
+
+  return find_udf_in_table(name, table);
 }
 
 #endif /* HAVE_DLOPEN */
diff --git a/sql/sql_udf.h b/sql/sql_udf.h
index 694e4fdd9c6..97b0f640b1e 100644
--- a/sql/sql_udf.h
+++ b/sql/sql_udf.h
@@ -140,7 +140,13 @@ void udf_init(void),udf_free(void);
 udf_func *find_udf(const char *name, size_t size, bool mark_used=0);
 void free_udf(udf_func *udf);
 int mysql_create_function(THD *thd,udf_func *udf);
-int mysql_drop_function(THD *thd, const LEX_CSTRING *name);
+enum drop_udf_result
+{
+  UDF_DEL_RESULT_ABSENT,
+  UDF_DEL_RESULT_DELETED,
+  UDF_DEL_RESULT_ERROR
+};
+enum drop_udf_result mysql_drop_function(THD *thd, const LEX_CSTRING *name);
 #else
 static inline void udf_init(void) { }
 static inline void udf_free(void) { }
diff --git a/sql/sql_update.cc b/sql/sql_update.cc
index 2eb2374091e..318ab8e7f69 100644
--- a/sql/sql_update.cc
+++ b/sql/sql_update.cc
@@ -477,6 +477,8 @@ int mysql_update(THD *thd,
     query_plan.set_no_partitions();
     if (thd->lex->describe || thd->lex->analyze_stmt)
       goto produce_explain_and_leave;
+    if (thd->is_error())
+      DBUG_RETURN(1);
 
     my_ok(thd);				// No matching records
     DBUG_RETURN(0);
diff --git a/sql/sql_yacc.yy b/sql/sql_yacc.yy
index b3d89eab472..0d25d0f7c1e 100644
--- a/sql/sql_yacc.yy
+++ b/sql/sql_yacc.yy
@@ -1,6 +1,6 @@
 /*
    Copyright (c) 2000, 2015, Oracle and/or its affiliates.
-   Copyright (c) 2010, 2019, MariaDB
+   Copyright (c) 2010, 2020, MariaDB
 
    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
@@ -8453,6 +8453,8 @@ alter_list_item:
           }
         | ALTER opt_column opt_if_exists_table_element field_ident SET DEFAULT column_default_expr
           {
+            if (check_expression($7, &$4, VCOL_DEFAULT))
+              MYSQL_YYABORT;
             if (unlikely(Lex->add_alter_list($4.str, $7, $3)))
               MYSQL_YYABORT;
           }
diff --git a/sql/sql_yacc_ora.yy b/sql/sql_yacc_ora.yy
index a4ee6d725e3..c2684c3ea7f 100644
--- a/sql/sql_yacc_ora.yy
+++ b/sql/sql_yacc_ora.yy
@@ -1,6 +1,6 @@
 /*
    Copyright (c) 2000, 2015, Oracle and/or its affiliates.
-   Copyright (c) 2010, 2019, MariaDB
+   Copyright (c) 2010, 2020, MariaDB
 
    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
@@ -8389,6 +8389,8 @@ alter_list_item:
           }
         | ALTER opt_column opt_if_exists_table_element field_ident SET DEFAULT column_default_expr
           {
+            if (check_expression($7, &$4, VCOL_DEFAULT))
+              MYSQL_YYABORT;
             if (unlikely(Lex->add_alter_list($4.str, $7, $3)))
               MYSQL_YYABORT;
           }
diff --git a/sql/threadpool_common.cc b/sql/threadpool_common.cc
index 1d51f0da411..03c39d65f23 100644
--- a/sql/threadpool_common.cc
+++ b/sql/threadpool_common.cc
@@ -316,6 +316,16 @@ static void handle_wait_timeout(THD *thd)
   thd->net.error= 2;
 }
 
+/** Check if some client data is cached in thd->net or thd->net.vio */
+static bool has_unread_data(THD* thd)
+{
+  NET *net= &thd->net;
+  if (net->compress && net->remain_in_buf)
+    return true;
+  Vio *vio= net->vio;
+  return vio->has_data(vio);
+}
+
 
 /**
  Process a single client request or a single batch.
@@ -350,7 +360,6 @@ static int threadpool_process_request(THD *thd)
   */
   for(;;)
   {
-    Vio *vio;
     thd->net.reading_or_writing= 0;
     if (mysql_audit_release_required(thd))
       mysql_audit_release(thd);
@@ -366,8 +375,7 @@ static int threadpool_process_request(THD *thd)
 
     set_thd_idle(thd);
 
-    vio= thd->net.vio;
-    if (!vio->has_data(vio))
+    if (!has_unread_data(thd))
     { 
       /* More info on this debug sync is in sql_parse.cc*/
       DEBUG_SYNC(thd, "before_do_command_net_read");
diff --git a/sql/wsrep_mysqld.h b/sql/wsrep_mysqld.h
index 55ea032e835..39b6267299c 100644
--- a/sql/wsrep_mysqld.h
+++ b/sql/wsrep_mysqld.h
@@ -131,8 +131,8 @@ extern const char* wsrep_provider_name;
 extern const char* wsrep_provider_version;
 extern const char* wsrep_provider_vendor;
 
-int  wsrep_show_status(THD *thd, SHOW_VAR *var, char *buff,
-                       enum enum_var_type scope);
+int  wsrep_show_status(THD *thd, SHOW_VAR *var, void *buff,
+                       system_status_var *status_var, enum_var_type scope);
 int  wsrep_init();
 void wsrep_deinit(bool free_options);
 
diff --git a/sql/wsrep_var.cc b/sql/wsrep_var.cc
index f18dc565329..413550935cb 100644
--- a/sql/wsrep_var.cc
+++ b/sql/wsrep_var.cc
@@ -724,8 +724,8 @@ static int show_var_cmp(const void *var1, const void *var2)
   return strcasecmp(((SHOW_VAR*)var1)->name, ((SHOW_VAR*)var2)->name);
 }
 
-int wsrep_show_status (THD *thd, SHOW_VAR *var, char *buff,
-                       enum enum_var_type scope)
+int wsrep_show_status (THD *thd, SHOW_VAR *var, void *buff,
+                       system_status_var *, enum_var_type scope)
 {
   uint i, maxi= SHOW_VAR_FUNC_BUFF_SIZE / sizeof(*var) - 1;
   SHOW_VAR *v= (SHOW_VAR *)buff;
diff --git a/storage/innobase/btr/btr0sea.cc b/storage/innobase/btr/btr0sea.cc
index 561d463ec5e..2ca0df6d371 100644
--- a/storage/innobase/btr/btr0sea.cc
+++ b/storage/innobase/btr/btr0sea.cc
@@ -1843,7 +1843,8 @@ btr_search_update_hash_on_insert(btr_cur_t* cursor, rw_lock_t* ahi_latch)
 				     n_bytes, index->id);
 	}
 
-	hash_table_t* const table = btr_get_search_table(index);
+	/* We must not look up "table" before acquiring ahi_latch. */
+	hash_table_t* table = NULL;
 	bool locked = false;
 
 	if (!page_rec_is_infimum(rec) && !rec_is_metadata(rec, index)) {
@@ -1860,6 +1861,7 @@ btr_search_update_hash_on_insert(btr_cur_t* cursor, rw_lock_t* ahi_latch)
 				goto function_exit;
 			}
 
+			table = btr_get_search_table(index);
 			ha_insert_for_fold(table, ins_fold, block, ins_rec);
 		}
 
@@ -1875,6 +1877,8 @@ btr_search_update_hash_on_insert(btr_cur_t* cursor, rw_lock_t* ahi_latch)
 			if (!btr_search_enabled || !block->index) {
 				goto function_exit;
 			}
+
+			table = btr_get_search_table(index);
 		}
 
 		if (!left_side) {
@@ -1895,6 +1899,8 @@ check_next_rec:
 				if (!btr_search_enabled || !block->index) {
 					goto function_exit;
 				}
+
+				table = btr_get_search_table(index);
 			}
 
 			ha_insert_for_fold(table, ins_fold, block, ins_rec);
@@ -1911,6 +1917,8 @@ check_next_rec:
 			if (!btr_search_enabled || !block->index) {
 				goto function_exit;
 			}
+
+			table = btr_get_search_table(index);
 		}
 
 		if (!left_side) {
diff --git a/storage/innobase/buf/buf0buddy.cc b/storage/innobase/buf/buf0buddy.cc
index 65ef42ef13e..593adf700b3 100644
--- a/storage/innobase/buf/buf0buddy.cc
+++ b/storage/innobase/buf/buf0buddy.cc
@@ -342,7 +342,7 @@ buf_buddy_alloc_zip(
 		if (buf) {
 			buf_buddy_free_t* buddy =
 				reinterpret_cast<buf_buddy_free_t*>(
-					buf->stamp.bytes
+					reinterpret_cast<byte*>(buf)
 					+ (BUF_BUDDY_LOW << i));
 
 			ut_ad(!buf_pool_contains_zip(buf_pool, buddy));
diff --git a/storage/innobase/dict/dict0mem.cc b/storage/innobase/dict/dict0mem.cc
index f380feff7ef..78ed717156c 100644
--- a/storage/innobase/dict/dict0mem.cc
+++ b/storage/innobase/dict/dict0mem.cc
@@ -1197,6 +1197,24 @@ operator<< (std::ostream& out, const dict_foreign_set& fk_set)
 	return(out);
 }
 
+/** Check whether fulltext index gets affected by foreign
+key constraint. */
+bool dict_foreign_t::affects_fulltext() const
+{
+  if (foreign_table == referenced_table || !foreign_table->fts)
+    return false;
+
+  for (ulint i= 0; i < n_fields; i++)
+  {
+    const dict_col_t *col= dict_index_get_nth_col(foreign_index, i);
+    if (dict_table_is_fts_column(foreign_table->fts->indexes, col->ind,
+                                 col->is_virtual()) != ULINT_UNDEFINED)
+      return true;
+  }
+
+  return false;
+}
+
 /** Adjust clustered index metadata for instant ADD COLUMN.
 @param[in]	clustered index definition after instant ADD COLUMN */
 inline void dict_index_t::instant_add_field(const dict_index_t& instant)
diff --git a/storage/innobase/fil/fil0fil.cc b/storage/innobase/fil/fil0fil.cc
index f354f7905bb..da556ec916c 100644
--- a/storage/innobase/fil/fil0fil.cc
+++ b/storage/innobase/fil/fil0fil.cc
@@ -574,6 +574,14 @@ static bool fil_node_open_file(fil_node_t* node)
 
 	const bool first_time_open = node->size == 0;
 
+	bool o_direct_possible = !FSP_FLAGS_HAS_PAGE_COMPRESSION(space->flags);
+	if (const ulint ssize = FSP_FLAGS_GET_ZIP_SSIZE(space->flags)) {
+		compile_time_assert(((UNIV_ZIP_SIZE_MIN >> 1) << 3) == 4096);
+		if (ssize < 3) {
+			o_direct_possible = false;
+		}
+	}
+
 	if (first_time_open
 	    || (space->purpose == FIL_TYPE_TABLESPACE
 		&& node == UT_LIST_GET_FIRST(space->chain)
@@ -592,7 +600,12 @@ retry:
 			node->is_raw_disk
 			? OS_FILE_OPEN_RAW | OS_FILE_ON_ERROR_NO_EXIT
 			: OS_FILE_OPEN | OS_FILE_ON_ERROR_NO_EXIT,
-			OS_FILE_AIO, OS_DATA_FILE, read_only_mode, &success);
+			OS_FILE_AIO,
+			o_direct_possible
+			? OS_DATA_FILE
+			: OS_DATA_FILE_NO_O_DIRECT,
+			read_only_mode,
+			&success);
 
 		if (!success) {
 			/* The following call prints an error message */
@@ -623,7 +636,12 @@ retry:
 			node->is_raw_disk
 			? OS_FILE_OPEN_RAW | OS_FILE_ON_ERROR_NO_EXIT
 			: OS_FILE_OPEN | OS_FILE_ON_ERROR_NO_EXIT,
-			OS_FILE_AIO, OS_DATA_FILE, read_only_mode, &success);
+			OS_FILE_AIO,
+			o_direct_possible
+			? OS_DATA_FILE
+			: OS_DATA_FILE_NO_O_DIRECT,
+			read_only_mode,
+			&success);
 	}
 
 	if (space->purpose != FIL_TYPE_LOG) {
diff --git a/storage/innobase/fts/fts0fts.cc b/storage/innobase/fts/fts0fts.cc
index 031a1011699..eb2bef4b953 100644
--- a/storage/innobase/fts/fts0fts.cc
+++ b/storage/innobase/fts/fts0fts.cc
@@ -5336,7 +5336,6 @@ fts_t::fts_t(
 	mem_heap_t*		heap)
 	:
 	added_synced(0), dict_locked(0),
-	bg_threads(0),
 	add_wq(NULL),
 	cache(NULL),
 	doc_col(ULINT_UNDEFINED), in_queue(false),
@@ -5344,8 +5343,6 @@ fts_t::fts_t(
 {
 	ut_a(table->fts == NULL);
 
-	mutex_create(LATCH_ID_FTS_BG_THREADS, &bg_threads_mutex);
-
 	ib_alloc_t*	heap_alloc = ib_heap_allocator_create(fts_heap);
 
 	indexes = ib_vector_create(heap_alloc, sizeof(dict_index_t*), 4);
@@ -5356,8 +5353,6 @@ fts_t::fts_t(
 /** fts_t destructor. */
 fts_t::~fts_t()
 {
-	mutex_free(&bg_threads_mutex);
-
 	ut_ad(add_wq == NULL);
 
 	if (cache != NULL) {
diff --git a/storage/innobase/fts/fts0opt.cc b/storage/innobase/fts/fts0opt.cc
index be5a5800c58..abb46eb7f4b 100644
--- a/storage/innobase/fts/fts0opt.cc
+++ b/storage/innobase/fts/fts0opt.cc
@@ -2574,6 +2574,11 @@ fts_optimize_remove_table(
 	if (fts_opt_start_shutdown) {
 		ib::info() << "Try to remove table " << table->name
 			<< " after FTS optimize thread exiting.";
+		/* If the table can't be removed then wait till
+		fts optimize thread shuts down */
+		while (fts_optimize_wq) {
+			os_thread_sleep(10000);
+		}
 		return;
 	}
 
diff --git a/storage/innobase/fts/fts0que.cc b/storage/innobase/fts/fts0que.cc
index 19e6aecf83d..2d8f040d788 100644
--- a/storage/innobase/fts/fts0que.cc
+++ b/storage/innobase/fts/fts0que.cc
@@ -1,6 +1,6 @@
 /*****************************************************************************
 
-Copyright (c) 2007, 2018, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 2007, 2020, Oracle and/or its affiliates. All Rights Reserved.
 Copyright (c) 2017, 2020, MariaDB Corporation.
 
 This program is free software; you can redistribute it and/or modify it under
@@ -144,6 +144,8 @@ struct fts_query_t {
 	ib_rbt_t*	wildcard_words;	/*!< words with wildcard */
 
 	bool		multi_exist;	/*!< multiple FTS_EXIST oper */
+	byte		visiting_sub_exp; /*!< count of nested
+					fts_ast_visit_sub_exp() */
 
 	st_mysql_ftparser*	parser;	/*!< fts plugin parser */
 };
@@ -2963,6 +2965,8 @@ fts_query_get_token(
 	return(new_ptr);
 }
 
+static dberr_t fts_ast_visit_sub_exp(fts_ast_node_t*, fts_ast_callback, void*);
+
 /*****************************************************************//**
 Visit every node of the AST. */
 static
@@ -3087,6 +3091,14 @@ fts_ast_visit_sub_exp(
 
 	ut_a(node->type == FTS_AST_SUBEXP_LIST);
 
+	/* To avoid stack overflow, we limit the mutual recursion
+	depth between fts_ast_visit(), fts_query_visitor() and
+	fts_ast_visit_sub_exp(). */
+	if (query->visiting_sub_exp++ > 31) {
+		query->error = DB_OUT_OF_MEMORY;
+		DBUG_RETURN(query->error);
+	}
+
 	cur_oper = query->oper;
 
 	/* Save current result set */
@@ -3109,6 +3121,7 @@ fts_ast_visit_sub_exp(
 	/* Reinstate parent node state */
 	query->multi_exist = multi_exist;
 	query->oper = cur_oper;
+	query->visiting_sub_exp--;
 
 	/* Merge the sub-expression result with the parent result set. */
 	subexpr_doc_ids = query->doc_ids;
diff --git a/storage/innobase/handler/ha_innodb.cc b/storage/innobase/handler/ha_innodb.cc
index 03c99f14dee..d6dc48dad7c 100644
--- a/storage/innobase/handler/ha_innodb.cc
+++ b/storage/innobase/handler/ha_innodb.cc
@@ -610,7 +610,6 @@ static PSI_mutex_info all_innodb_mutexes[] = {
 	PSI_KEY(recalc_pool_mutex),
 	PSI_KEY(fil_system_mutex),
 	PSI_KEY(flush_list_mutex),
-	PSI_KEY(fts_bg_threads_mutex),
 	PSI_KEY(fts_delete_mutex),
 	PSI_KEY(fts_doc_id_mutex),
 	PSI_KEY(log_flush_order_mutex),
@@ -2653,6 +2652,12 @@ innobase_trx_init(
 	DBUG_ENTER("innobase_trx_init");
 	DBUG_ASSERT(thd == trx->mysql_thd);
 
+	/* Ensure that thd_lock_wait_timeout(), which may be called
+	while holding lock_sys.mutex, by lock_rec_enqueue_waiting(),
+	will not end up acquiring LOCK_global_system_variables in
+	intern_sys_var_ptr(). */
+	THDVAR(thd, lock_wait_timeout);
+
 	trx->check_foreigns = !thd_test_options(
 		thd, OPTION_NO_FOREIGN_KEY_CHECKS);
 
@@ -3658,12 +3663,30 @@ static int innodb_init_params()
 		DBUG_RETURN(HA_ERR_INITIALIZATION);
 	}
 
+	if (innodb_lock_schedule_algorithm == INNODB_LOCK_SCHEDULE_ALGORITHM_VATS) {
+		ib::warn() << "The parameter innodb_lock_schedule_algorithm"
+			" is deprecated, and the setting"
+			" innodb_lock_schedule_algorithm=vats"
+			" may cause corruption. The parameter may be removed"
+			" in future releases.";
+
 #ifdef WITH_WSREP
-	/* Currently, Galera does not support VATS lock schedule algorithm. */
-	if (innodb_lock_schedule_algorithm == INNODB_LOCK_SCHEDULE_ALGORITHM_VATS
-	    && global_system_variables.wsrep_on) {
-		ib::info() << "For Galera, using innodb_lock_schedule_algorithm=fcfs";
-		innodb_lock_schedule_algorithm = INNODB_LOCK_SCHEDULE_ALGORITHM_FCFS;
+		/* Currently, Galera does not support VATS lock schedule algorithm. */
+		if (global_system_variables.wsrep_on) {
+			ib::info() << "For Galera, using innodb_lock_schedule_algorithm=fcfs";
+			innodb_lock_schedule_algorithm = INNODB_LOCK_SCHEDULE_ALGORITHM_FCFS;
+		}
+#endif /* WITH_WSREP */
+	}
+
+#ifdef WITH_WSREP
+	/* Print deprecation info if xtrabackup is used for SST method */
+	if (global_system_variables.wsrep_on
+	    && wsrep_sst_method
+	    && (!strcmp(wsrep_sst_method, "xtrabackup")
+	        || !strcmp(wsrep_sst_method, "xtrabackup-v2"))) {
+		ib::info() << "Galera SST method xtrabackup is deprecated and the "
+			" support for it may be removed in future releases.";
 	}
 #endif /* WITH_WSREP */
 
@@ -16049,8 +16072,7 @@ struct ShowStatus {
 		/** Collect the latch metrics. Ignore entries where the
 		spins and waits are zero.
 		@param[in]	count		The latch metrics */
-		void operator()(Count* count)
-			UNIV_NOTHROW
+		void operator()(Count* count) const UNIV_NOTHROW
 		{
 			if (count->m_spins > 0 || count->m_waits > 0) {
 
@@ -16078,13 +16100,8 @@ struct ShowStatus {
 	bool operator()(latch_meta_t& latch_meta)
 		UNIV_NOTHROW
 	{
-		latch_meta_t::CounterType*	counter;
-
-		counter = latch_meta.get_counter();
-
-		GetCount	get_count(latch_meta.get_name(), &m_values);
-
-		counter->iterate(get_count);
+		latch_meta.get_counter()->iterate(
+			GetCount(latch_meta.get_name(), &m_values));
 
 		return(true);
 	}
diff --git a/storage/innobase/handler/handler0alter.cc b/storage/innobase/handler/handler0alter.cc
index f85bf8e7338..672f322f609 100644
--- a/storage/innobase/handler/handler0alter.cc
+++ b/storage/innobase/handler/handler0alter.cc
@@ -9422,11 +9422,11 @@ ha_innobase::commit_inplace_alter_table(
 
 		/* Exclusively lock the table, to ensure that no other
 		transaction is holding locks on the table while we
-		change the table definition. The meta-data lock (MDL)
+		change the table definition. The MySQL meta-data lock
 		should normally guarantee that no conflicting locks
 		exist. However, FOREIGN KEY constraints checks and any
 		transactions collected during crash recovery could be
-		holding InnoDB locks only, not MDL. */
+		holding InnoDB locks only, not MySQL locks. */
 
 		dberr_t error = row_merge_lock_table(
 			m_prebuilt->trx, ctx->old_table, LOCK_X);
@@ -9871,7 +9871,7 @@ foreign_fail:
 		dict_table_close(m_prebuilt->table, true, false);
 		dict_table_remove_from_cache(m_prebuilt->table);
 		m_prebuilt->table = dict_table_open_on_name(
-			tb_name, TRUE, TRUE, DICT_ERR_IGNORE_NONE);
+			tb_name, TRUE, TRUE, DICT_ERR_IGNORE_FK_NOKEY);
 
 		/* Drop outdated table stats. */
 		char	errstr[1024];
diff --git a/storage/innobase/include/dict0mem.h b/storage/innobase/include/dict0mem.h
index f46352ddc67..dfe8f9747f7 100644
--- a/storage/innobase/include/dict0mem.h
+++ b/storage/innobase/include/dict0mem.h
@@ -1307,6 +1307,10 @@ struct dict_foreign_t{
 
 	dict_vcol_set*	v_cols;		/*!< set of virtual columns affected
 					by foreign key constraint. */
+
+	/** Check whether the fulltext index gets affected by
+	foreign key constraint */
+	bool affects_fulltext() const;
 };
 
 std::ostream&
diff --git a/storage/innobase/include/fts0ast.h b/storage/innobase/include/fts0ast.h
index bad040fdcda..5799776c32d 100644
--- a/storage/innobase/include/fts0ast.h
+++ b/storage/innobase/include/fts0ast.h
@@ -1,7 +1,7 @@
 /*****************************************************************************
 
 Copyright (c) 2007, 2018, Oracle and/or its affiliates. All Rights Reserved.
-Copyright (c) 2016, 2018, MariaDB Corporation.
+Copyright (c) 2016, 2020, MariaDB Corporation.
 
 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
diff --git a/storage/innobase/include/fts0fts.h b/storage/innobase/include/fts0fts.h
index 7e4832a7917..9f5b83e7d2e 100644
--- a/storage/innobase/include/fts0fts.h
+++ b/storage/innobase/include/fts0fts.h
@@ -317,19 +317,11 @@ public:
 	/** fts_t destructor. */
 	~fts_t();
 
-	/** Mutex protecting bg_threads* and fts_add_wq. */
-	ib_mutex_t	bg_threads_mutex;
-
-	/** Whether the ADDED table record sync-ed after
-	crash recovery; protected by bg_threads_mutex */
+	/** Whether the ADDED table record sync-ed after crash recovery */
 	unsigned	added_synced:1;
-	/** Whether the table holds dict_sys->mutex;
-	protected by bg_threads_mutex */
+	/** Whether the table holds dict_sys->mutex */
 	unsigned	dict_locked:1;
 
-	/** Number of background threads accessing this table. */
-	ulint		bg_threads;
-
 	/** Work queue for scheduling jobs for the FTS 'Add' thread, or NULL
 	if the thread has not yet been created. Each work item is a
 	fts_trx_doc_ids_t*. */
diff --git a/storage/innobase/include/os0file.h b/storage/innobase/include/os0file.h
index c896d9da6a2..851261fe1d9 100644
--- a/storage/innobase/include/os0file.h
+++ b/storage/innobase/include/os0file.h
@@ -2,7 +2,7 @@
 
 Copyright (c) 1995, 2017, Oracle and/or its affiliates. All Rights Reserved.
 Copyright (c) 2009, Percona Inc.
-Copyright (c) 2013, 2019, MariaDB Corporation.
+Copyright (c) 2013, 2020, MariaDB Corporation.
 
 Portions of this file contain modifications contributed and copyrighted
 by Percona Inc.. Those modifications are
@@ -151,6 +151,7 @@ static const ulint OS_FILE_NORMAL = 62;
 static const ulint OS_DATA_FILE = 100;
 static const ulint OS_LOG_FILE = 101;
 static const ulint OS_DATA_TEMP_FILE = 102;
+static const ulint OS_DATA_FILE_NO_O_DIRECT = 103;
 /* @} */
 
 /** Error codes from os_file_get_last_error @{ */
diff --git a/storage/innobase/include/que0que.h b/storage/innobase/include/que0que.h
index b46393e37d2..ec806c869a6 100644
--- a/storage/innobase/include/que0que.h
+++ b/storage/innobase/include/que0que.h
@@ -35,9 +35,6 @@ Created 5/27/1996 Heikki Tuuri
 #include "row0types.h"
 #include "pars0types.h"
 
-/** Mutex protecting the query threads. */
-extern ib_mutex_t	que_thr_mutex;
-
 /***********************************************************************//**
 Creates a query graph fork node.
 @return own: fork node */
diff --git a/storage/innobase/include/sync0sync.h b/storage/innobase/include/sync0sync.h
index c21d7f81e26..824ec9ce931 100644
--- a/storage/innobase/include/sync0sync.h
+++ b/storage/innobase/include/sync0sync.h
@@ -59,7 +59,6 @@ extern mysql_pfs_key_t	dict_foreign_err_mutex_key;
 extern mysql_pfs_key_t	dict_sys_mutex_key;
 extern mysql_pfs_key_t	fil_system_mutex_key;
 extern mysql_pfs_key_t	flush_list_mutex_key;
-extern mysql_pfs_key_t	fts_bg_threads_mutex_key;
 extern mysql_pfs_key_t	fts_delete_mutex_key;
 extern mysql_pfs_key_t	fts_doc_id_mutex_key;
 extern mysql_pfs_key_t	fts_pll_tokenize_mutex_key;
diff --git a/storage/innobase/include/sync0types.h b/storage/innobase/include/sync0types.h
index 60b22247d62..9a4b34e0c83 100644
--- a/storage/innobase/include/sync0types.h
+++ b/storage/innobase/include/sync0types.h
@@ -209,7 +209,6 @@ enum latch_level_t {
 
 	SYNC_FTS_TOKENIZE,
 	SYNC_FTS_OPTIMIZE,
-	SYNC_FTS_BG_THREADS,
 	SYNC_FTS_CACHE_INIT,
 	SYNC_RECV,
 	SYNC_LOG_FLUSH_ORDER,
@@ -218,7 +217,6 @@ enum latch_level_t {
 	SYNC_PAGE_CLEANER,
 	SYNC_PURGE_QUEUE,
 	SYNC_TRX_SYS_HEADER,
-	SYNC_REC_LOCK,
 	SYNC_THREADS,
 	SYNC_TRX,
 	SYNC_RW_TRX_HASH_ELEMENT,
@@ -293,7 +291,6 @@ enum latch_id_t {
 	LATCH_ID_FILE_FORMAT_MAX,
 	LATCH_ID_FIL_SYSTEM,
 	LATCH_ID_FLUSH_LIST,
-	LATCH_ID_FTS_BG_THREADS,
 	LATCH_ID_FTS_DELETE,
 	LATCH_ID_FTS_DOC_ID,
 	LATCH_ID_FTS_PLL_TOKENIZE,
@@ -648,10 +645,10 @@ public:
 	}
 
 	/** Iterate over the counters */
-	template <typename Callback>
-	void iterate(Callback& callback) const
-		UNIV_NOTHROW
+	template<typename C> void iterate(const C& callback) UNIV_NOTHROW
 	{
+		m_mutex.enter();
+
 		Counters::const_iterator	end = m_counters.end();
 
 		for (Counters::const_iterator it = m_counters.begin();
@@ -660,6 +657,8 @@ public:
 
 			callback(*it);
 		}
+
+		m_mutex.exit();
 	}
 
 	/** Disable the monitoring */
diff --git a/storage/innobase/include/ut0mutex.h b/storage/innobase/include/ut0mutex.h
index 1f99ee17a24..5375be0ed71 100644
--- a/storage/innobase/include/ut0mutex.h
+++ b/storage/innobase/include/ut0mutex.h
@@ -1,7 +1,7 @@
 /*****************************************************************************
 
 Copyright (c) 2012, 2015, Oracle and/or its affiliates. All Rights Reserved.
-Copyright (c) 2017, MariaDB Corporation.
+Copyright (c) 2017, 2020, MariaDB Corporation.
 
 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
@@ -142,16 +142,10 @@ public:
 
 			/* Some of the slots will be null in non-debug mode */
 
-			if (*it == NULL) {
-				continue;
-			}
-
-			latch_meta_t*	latch_meta = *it;
-
-			bool	ret = callback(*latch_meta);
-
-			if (!ret) {
-				return(ret);
+			if (latch_meta_t* l= *it) {
+				if (!callback(*l)) {
+					return false;
+				}
 			}
 		}
 
diff --git a/storage/innobase/lock/lock0lock.cc b/storage/innobase/lock/lock0lock.cc
index efdd38e01a4..c8c8e66d0b2 100644
--- a/storage/innobase/lock/lock0lock.cc
+++ b/storage/innobase/lock/lock0lock.cc
@@ -2144,12 +2144,12 @@ lock_grant_and_move_on_page(ulint rec_fold, ulint space, ulint page_no)
 		lock = previous->hash;
 	}
 
-	ut_ad(!lock->trx->is_wsrep());
 	ut_ad(previous->hash == lock || previous == lock);
 	/* Grant locks if there are no conflicting locks ahead.
 	 Move granted locks to the head of the list. */
 	while (lock) {
 		/* If the lock is a wait lock on this page, and it does not need to wait. */
+		ut_ad(!lock->trx->is_wsrep());
 		if (lock_get_wait(lock)
 		    && lock->un_member.rec_lock.space == space
 		    && lock->un_member.rec_lock.page_no == page_no
@@ -4072,11 +4072,10 @@ lock_grant_and_move_on_rec(
 	    }
 		lock = previous->hash;
 	}
-	ut_ad(!lock->trx->is_wsrep());
 	/* Grant locks if there are no conflicting locks ahead.
 	 Move granted locks to the head of the list. */
-	for (;lock != NULL;) {
-
+	while (lock) {
+		ut_ad(!lock->trx->is_wsrep());
 		/* If the lock is a wait lock on this page, and it does not need to wait. */
 		if (lock->un_member.rec_lock.space == space
 			&& lock->un_member.rec_lock.page_no == page_no
diff --git a/storage/innobase/os/os0file.cc b/storage/innobase/os/os0file.cc
index 8ff4533e588..061d23ac017 100644
--- a/storage/innobase/os/os0file.cc
+++ b/storage/innobase/os/os0file.cc
@@ -2356,8 +2356,8 @@ AIO::is_linux_native_aio_supported()
 		io_prep_pwrite(p_iocb, fd, ptr, srv_page_size, 0);
 
 	} else {
-		ut_a(srv_page_size >= 512);
-		io_prep_pread(p_iocb, fd, ptr, 512, 0);
+		ut_a(srv_page_size >= 4096);
+		io_prep_pread(p_iocb, fd, ptr, srv_page_size, 0);
 	}
 
 	ut_a(reinterpret_cast<size_t>(p_iocb->u.c.buf) % OS_FILE_LOG_BLOCK_SIZE
@@ -3003,7 +3003,8 @@ os_file_create_func(
 
 	ut_a(type == OS_LOG_FILE
 	     || type == OS_DATA_FILE
-	     || type == OS_DATA_TEMP_FILE);
+	     || type == OS_DATA_TEMP_FILE
+	     || type == OS_DATA_FILE_NO_O_DIRECT);
 
 	ut_a(purpose == OS_FILE_AIO || purpose == OS_FILE_NORMAL);
 
@@ -3050,7 +3051,8 @@ os_file_create_func(
 	/* We disable OS caching (O_DIRECT) only on data files */
 	if (!read_only
 	    && *success
-	    && (type != OS_LOG_FILE && type != OS_DATA_TEMP_FILE)
+	    && (type != OS_LOG_FILE && type != OS_DATA_TEMP_FILE
+		&& type != OS_DATA_FILE_NO_O_DIRECT)
 	    && (srv_file_flush_method == SRV_O_DIRECT
 		|| srv_file_flush_method == SRV_O_DIRECT_NO_FSYNC)) {
 
diff --git a/storage/innobase/row/row0ins.cc b/storage/innobase/row/row0ins.cc
index 4c355881ca1..d581fd21d99 100644
--- a/storage/innobase/row/row0ins.cc
+++ b/storage/innobase/row/row0ins.cc
@@ -465,7 +465,7 @@ row_ins_cascade_calc_update_vec(
 
 	n_fields_updated = 0;
 
-	bool affects_fulltext = false;
+	bool affects_fulltext = foreign->affects_fulltext();
 
 	if (table->fts) {
 		doc_id_pos = dict_table_get_nth_col_pos(
@@ -588,17 +588,6 @@ row_ins_cascade_calc_update_vec(
 							padded_data, min_size);
 				}
 
-				/* Check whether the current column has
-				FTS index on it */
-				if (table->fts
-				    && dict_table_is_fts_column(
-					table->fts->indexes,
-					dict_col_get_no(col),
-					col->is_virtual())
-					!= ULINT_UNDEFINED) {
-					affects_fulltext = true;
-				}
-
 				/* If Doc ID is updated, check whether the
 				Doc ID is valid */
 				if (table->fts
@@ -1226,8 +1215,6 @@ row_ins_foreign_check_on_constraint(
 		MEM_UNDEFINED(update->fields,
 			      update->n_fields * sizeof *update->fields);
 
-		bool affects_fulltext = false;
-
 		for (ulint i = 0; i < foreign->n_fields; i++) {
 			upd_field_t*	ufield = &update->fields[i];
 			ulint		col_no = dict_index_get_nth_col_no(
@@ -1243,19 +1230,9 @@ row_ins_foreign_check_on_constraint(
 			ufield->orig_len = 0;
 			ufield->exp = NULL;
 			dfield_set_null(&ufield->new_val);
-
-			if (!affects_fulltext
-			    && table->fts && dict_table_is_fts_column(
-				    table->fts->indexes,
-				    dict_index_get_nth_col(index, i)->ind,
-				    dict_index_get_nth_col(index, i)
-				    ->is_virtual())
-			    != ULINT_UNDEFINED) {
-				affects_fulltext = true;
-			}
 		}
 
-		if (affects_fulltext) {
+		if (foreign->affects_fulltext()) {
 			fts_trx_add_op(trx, table, doc_id, FTS_DELETE, NULL);
 		}
 
@@ -1269,24 +1246,10 @@ row_ins_foreign_check_on_constraint(
 				goto nonstandard_exit_func;
 			}
 		}
-	} else if (table->fts && cascade->is_delete == PLAIN_DELETE) {
+	} else if (table->fts && cascade->is_delete == PLAIN_DELETE
+		   && foreign->affects_fulltext()) {
 		/* DICT_FOREIGN_ON_DELETE_CASCADE case */
-		bool affects_fulltext = false;
-
-		for (ulint i = 0; i < foreign->n_fields; i++) {
-			if (dict_table_is_fts_column(
-				table->fts->indexes,
-				dict_index_get_nth_col(index, i)->ind,
-				dict_index_get_nth_col(index, i)->is_virtual())
-			    != ULINT_UNDEFINED) {
-				affects_fulltext = true;
-				break;
-			}
-		}
-
-		if (affects_fulltext) {
-			fts_trx_add_op(trx, table, doc_id, FTS_DELETE, NULL);
-		}
+		fts_trx_add_op(trx, table, doc_id, FTS_DELETE, NULL);
 	}
 
 	if (!node->is_delete
diff --git a/storage/innobase/row/row0sel.cc b/storage/innobase/row/row0sel.cc
index 8f64d415d0b..50e7aadd226 100644
--- a/storage/innobase/row/row0sel.cc
+++ b/storage/innobase/row/row0sel.cc
@@ -3941,7 +3941,7 @@ exhausted:
 
 /*********************************************************************//**
 Check a pushed-down index condition.
-@return ICP_NO_MATCH, ICP_MATCH, or ICP_OUT_OF_RANGE */
+@return ICP_ABORTED_BY_USER, ICP_NO_MATCH, ICP_MATCH, or ICP_OUT_OF_RANGE */
 static
 ICP_RESULT
 row_search_idx_cond_check(
@@ -4462,10 +4462,13 @@ row_search_mvcc(
 					switch (row_search_idx_cond_check(
 							buf, prebuilt,
 							rec, offsets)) {
-					case ICP_NO_MATCH:
-					case ICP_OUT_OF_RANGE:
                                         case ICP_ABORTED_BY_USER:
+						mtr_commit(&mtr);
+						err = DB_INTERRUPTED;
+						goto func_exit;
                                         case ICP_ERROR:
+					case ICP_NO_MATCH:
+					case ICP_OUT_OF_RANGE:
 						goto shortcut_mismatch;
 					case ICP_MATCH:
 						goto shortcut_match;
@@ -4493,7 +4496,6 @@ row_search_mvcc(
 
 			shortcut_match:
 				mtr.commit();
-
 				/* NOTE that we do NOT store the cursor
 				position */
 				err = DB_SUCCESS;
@@ -5241,8 +5243,10 @@ no_gap_lock:
 						buf, prebuilt, rec, offsets)) {
 				case ICP_NO_MATCH:
 					goto next_rec;
-				case ICP_OUT_OF_RANGE:
                                 case ICP_ABORTED_BY_USER:
+					err = DB_INTERRUPTED;
+					goto idx_cond_failed;
+				case ICP_OUT_OF_RANGE:
                                 case ICP_ERROR:
 					err = DB_RECORD_NOT_FOUND;
 					goto idx_cond_failed;
@@ -5301,9 +5305,11 @@ locks_ok_del_marked:
 			row_unlock_for_mysql(prebuilt, TRUE);
 		}
 		goto next_rec;
+	case ICP_ABORTED_BY_USER:
+		err = DB_INTERRUPTED;
+		goto idx_cond_failed;
 	case ICP_OUT_OF_RANGE:
-        case ICP_ABORTED_BY_USER:
-        case ICP_ERROR:
+	case ICP_ERROR:
 		err = DB_RECORD_NOT_FOUND;
 		goto idx_cond_failed;
 	case ICP_MATCH:
diff --git a/storage/innobase/row/row0uins.cc b/storage/innobase/row/row0uins.cc
index be0f6373e21..9dd65a30ac1 100644
--- a/storage/innobase/row/row0uins.cc
+++ b/storage/innobase/row/row0uins.cc
@@ -93,7 +93,8 @@ row_undo_ins_remove_clust_rec(
 
 	online = dict_index_is_online_ddl(index);
 	if (online) {
-		ut_ad(!node->trx->dict_operation_lock_mode);
+		ut_ad(node->trx->dict_operation_lock_mode
+		      != RW_X_LATCH);
 		ut_ad(node->table->id != DICT_INDEXES_ID);
 		mtr_s_lock_index(index, &mtr);
 	}
@@ -568,9 +569,6 @@ row_undo_ins(
 		return(DB_SUCCESS);
 	}
 
-	ut_ad(node->table->is_temporary()
-	      || lock_table_has_locks(node->table));
-
 	/* Iterate over all the indexes and undo the insert.*/
 
 	node->index = dict_table_get_first_index(node->table);
diff --git a/storage/innobase/row/row0umod.cc b/storage/innobase/row/row0umod.cc
index 3e46c2f6123..288173a91c2 100644
--- a/storage/innobase/row/row0umod.cc
+++ b/storage/innobase/row/row0umod.cc
@@ -219,7 +219,10 @@ row_undo_mod_clust(
 	bool		online;
 
 	ut_ad(thr_get_trx(thr) == node->trx);
+	ut_ad(node->trx->dict_operation_lock_mode);
 	ut_ad(node->trx->in_rollback);
+	ut_ad(rw_lock_own_flagged(&dict_operation_lock,
+				  RW_LOCK_FLAG_X | RW_LOCK_FLAG_S));
 
 	log_free_check();
 	pcur = &node->pcur;
@@ -236,7 +239,7 @@ row_undo_mod_clust(
 
 	online = dict_index_is_online_ddl(index);
 	if (online) {
-		ut_ad(!node->trx->dict_operation_lock_mode);
+		ut_ad(node->trx->dict_operation_lock_mode != RW_X_LATCH);
 		mtr_s_lock_index(index, &mtr);
 	}
 
@@ -275,7 +278,17 @@ row_undo_mod_clust(
 		ut_ad(err == DB_SUCCESS || err == DB_OUT_OF_FILE_SPACE);
 	}
 
-	if (err == DB_SUCCESS && online && dict_index_is_online_ddl(index)) {
+	/* Online rebuild cannot be initiated while we are holding
+	dict_operation_lock and index->lock. (It can be aborted.) */
+	ut_ad(online || !dict_index_is_online_ddl(index));
+
+	if (err == DB_SUCCESS && online) {
+
+		ut_ad(rw_lock_own_flagged(
+				&index->lock,
+				RW_LOCK_FLAG_S | RW_LOCK_FLAG_X
+				| RW_LOCK_FLAG_SX));
+
 		switch (node->rec_type) {
 		case TRX_UNDO_DEL_MARK_REC:
 			row_log_table_insert(
@@ -824,6 +837,37 @@ func_exit_no_pcur:
 }
 
 /***********************************************************//**
+Flags a secondary index corrupted. */
+static MY_ATTRIBUTE((nonnull))
+void
+row_undo_mod_sec_flag_corrupted(
+/*============================*/
+	trx_t*		trx,	/*!< in/out: transaction */
+	dict_index_t*	index)	/*!< in: secondary index */
+{
+	ut_ad(!dict_index_is_clust(index));
+
+	switch (trx->dict_operation_lock_mode) {
+	case RW_S_LATCH:
+		/* Because row_undo() is holding an S-latch
+		on the data dictionary during normal rollback,
+		we can only mark the index corrupted in the
+		data dictionary cache. TODO: fix this somehow.*/
+		mutex_enter(&dict_sys->mutex);
+		dict_set_corrupted_index_cache_only(index);
+		mutex_exit(&dict_sys->mutex);
+		break;
+	default:
+		ut_ad(0);
+		/* fall through */
+	case RW_X_LATCH:
+		/* This should be the rollback of a data dictionary
+		transaction. */
+		dict_set_corrupted(index, trx, "rollback");
+	}
+}
+
+/***********************************************************//**
 Undoes a modify in secondary indexes when undo record type is UPD_DEL.
 @return DB_SUCCESS or DB_OUT_OF_FILE_SPACE */
 static MY_ATTRIBUTE((nonnull, warn_unused_result))
@@ -936,7 +980,8 @@ row_undo_mod_del_mark_sec(
 		}
 
 		if (err == DB_DUPLICATE_KEY) {
-			index->type |= DICT_CORRUPT;
+			row_undo_mod_sec_flag_corrupted(
+				thr_get_trx(thr), index);
 			err = DB_SUCCESS;
 			/* Do not return any error to the caller. The
 			duplicate will be reported by ALTER TABLE or
@@ -1081,7 +1126,8 @@ row_undo_mod_upd_exist_sec(
 		}
 
 		if (err == DB_DUPLICATE_KEY) {
-			index->type |= DICT_CORRUPT;
+			row_undo_mod_sec_flag_corrupted(
+				thr_get_trx(thr), index);
 			err = DB_SUCCESS;
 		} else if (err != DB_SUCCESS) {
 			break;
@@ -1247,8 +1293,6 @@ row_undo_mod(
 		return(DB_SUCCESS);
 	}
 
-	ut_ad(node->table->is_temporary()
-	      || lock_table_has_locks(node->table));
 	node->index = dict_table_get_first_index(node->table);
 	ut_ad(dict_index_is_clust(node->index));
 
diff --git a/storage/innobase/row/row0undo.cc b/storage/innobase/row/row0undo.cc
index 68b8123cbb6..762228503be 100644
--- a/storage/innobase/row/row0undo.cc
+++ b/storage/innobase/row/row0undo.cc
@@ -283,16 +283,15 @@ row_undo(
 			? UNDO_NODE_INSERT : UNDO_NODE_MODIFY;
 	}
 
-	/* Prevent prepare_inplace_alter_table_dict() from adding
-	dict_table_t::indexes while we are processing the record.
-	Recovered transactions are not protected by MDL, and the
-	secondary index creation is not protected by table locks
-	for online operation. (A table lock would only be acquired
-	when committing the ALTER TABLE operation.) */
-	const bool locked_data_dict = UNIV_UNLIKELY(trx->is_recovered)
-		&& !trx->dict_operation_lock_mode;
-
-	if (UNIV_UNLIKELY(locked_data_dict)) {
+	/* Prevent DROP TABLE etc. while we are rolling back this row.
+	If we are doing a TABLE CREATE or some other dictionary operation,
+	then we already have dict_operation_lock locked in x-mode. Do not
+	try to lock again, because that would cause a hang. */
+
+	const bool locked_data_dict = (trx->dict_operation_lock_mode == 0);
+
+	if (locked_data_dict) {
+
 		row_mysql_freeze_data_dictionary(trx);
 	}
 
@@ -308,7 +307,8 @@ row_undo(
 		err = row_undo_mod(node, thr);
 	}
 
-	if (UNIV_UNLIKELY(locked_data_dict)) {
+	if (locked_data_dict) {
+
 		row_mysql_unfreeze_data_dictionary(trx);
 	}
 
diff --git a/storage/innobase/sync/sync0debug.cc b/storage/innobase/sync/sync0debug.cc
index 3cad82ef3df..f6bfacda652 100644
--- a/storage/innobase/sync/sync0debug.cc
+++ b/storage/innobase/sync/sync0debug.cc
@@ -465,7 +465,6 @@ LatchDebug::LatchDebug()
 	LEVEL_MAP_INSERT(SYNC_WORK_QUEUE);
 	LEVEL_MAP_INSERT(SYNC_FTS_TOKENIZE);
 	LEVEL_MAP_INSERT(SYNC_FTS_OPTIMIZE);
-	LEVEL_MAP_INSERT(SYNC_FTS_BG_THREADS);
 	LEVEL_MAP_INSERT(SYNC_FTS_CACHE_INIT);
 	LEVEL_MAP_INSERT(SYNC_RECV);
 	LEVEL_MAP_INSERT(SYNC_LOG_FLUSH_ORDER);
@@ -474,7 +473,6 @@ LatchDebug::LatchDebug()
 	LEVEL_MAP_INSERT(SYNC_PAGE_CLEANER);
 	LEVEL_MAP_INSERT(SYNC_PURGE_QUEUE);
 	LEVEL_MAP_INSERT(SYNC_TRX_SYS_HEADER);
-	LEVEL_MAP_INSERT(SYNC_REC_LOCK);
 	LEVEL_MAP_INSERT(SYNC_THREADS);
 	LEVEL_MAP_INSERT(SYNC_TRX);
 	LEVEL_MAP_INSERT(SYNC_RW_TRX_HASH_ELEMENT);
@@ -743,7 +741,6 @@ LatchDebug::check_order(
 
 	case SYNC_MONITOR_MUTEX:
 	case SYNC_RECV:
-	case SYNC_FTS_BG_THREADS:
 	case SYNC_WORK_QUEUE:
 	case SYNC_FTS_TOKENIZE:
 	case SYNC_FTS_OPTIMIZE:
@@ -844,15 +841,6 @@ LatchDebug::check_order(
 		}
 		break;
 
-	case SYNC_REC_LOCK:
-
-		if (find(latches, SYNC_LOCK_SYS) != 0) {
-			basic_check(latches, level, SYNC_REC_LOCK - 1);
-		} else {
-			basic_check(latches, level, SYNC_REC_LOCK);
-		}
-		break;
-
 	case SYNC_IBUF_BITMAP:
 
 		/* Either the thread must own the master mutex to all
@@ -1301,9 +1289,6 @@ sync_latch_meta_init()
 
 	LATCH_ADD_MUTEX(FLUSH_LIST, SYNC_BUF_FLUSH_LIST, flush_list_mutex_key);
 
-	LATCH_ADD_MUTEX(FTS_BG_THREADS, SYNC_FTS_BG_THREADS,
-			fts_bg_threads_mutex_key);
-
 	LATCH_ADD_MUTEX(FTS_DELETE, SYNC_FTS_OPTIMIZE, fts_delete_mutex_key);
 
 	LATCH_ADD_MUTEX(FTS_DOC_ID, SYNC_FTS_OPTIMIZE, fts_doc_id_mutex_key);
diff --git a/storage/innobase/sync/sync0sync.cc b/storage/innobase/sync/sync0sync.cc
index eab07df19dc..a1d0009bcc5 100644
--- a/storage/innobase/sync/sync0sync.cc
+++ b/storage/innobase/sync/sync0sync.cc
@@ -45,7 +45,6 @@ mysql_pfs_key_t	dict_foreign_err_mutex_key;
 mysql_pfs_key_t	dict_sys_mutex_key;
 mysql_pfs_key_t	fil_system_mutex_key;
 mysql_pfs_key_t	flush_list_mutex_key;
-mysql_pfs_key_t	fts_bg_threads_mutex_key;
 mysql_pfs_key_t	fts_delete_mutex_key;
 mysql_pfs_key_t	fts_doc_id_mutex_key;
 mysql_pfs_key_t	fts_pll_tokenize_mutex_key;