Merge branch '10.3' into 10.4

62 files changed, 364 insertions, 171 deletions

diff --git a/cmake/cpack_rpm.cmake b/cmake/cpack_rpm.cmake
index 90b4cab53f8..5dd33b623d0 100644
--- a/cmake/cpack_rpm.cmake
+++ b/cmake/cpack_rpm.cmake
@@ -100,8 +100,11 @@ SET(ignored
   "%ignore /etc"
   "%ignore /etc/init.d"
   "%ignore /etc/logrotate.d"
+  "%ignore /etc/security"
   "%ignore /etc/systemd"
   "%ignore /etc/systemd/system"
+  "%ignore /lib"
+  "%ignore /lib/security"
   "%ignore ${CMAKE_INSTALL_PREFIX}"
   "%ignore ${CMAKE_INSTALL_PREFIX}/bin"
   "%ignore ${CMAKE_INSTALL_PREFIX}/include"
diff --git a/cmake/install_layout.cmake b/cmake/install_layout.cmake
index 87d8cacb4d3..ab19a7f0f11 100644
--- a/cmake/install_layout.cmake
+++ b/cmake/install_layout.cmake
@@ -139,11 +139,10 @@ SET(INSTALL_SYSCONF2DIR_RPM             "/etc/my.cnf.d")
 #
 IF(CMAKE_SIZEOF_VOID_P EQUAL 8)
   SET(INSTALL_LIBDIR_RPM                "lib64")
-  SET(INSTALL_PLUGINDIR_RPM             "lib64/mysql/plugin")
 ELSE()
   SET(INSTALL_LIBDIR_RPM                "lib")
-  SET(INSTALL_PLUGINDIR_RPM             "lib/mysql/plugin")
 ENDIF()
+SET(INSTALL_PLUGINDIR_RPM               "${INSTALL_LIBDIR_RPM}/mysql/plugin")
 #
 SET(INSTALL_INCLUDEDIR_RPM              "include/mysql")
 #
@@ -164,6 +163,7 @@ SET(INSTALL_UNIX_ADDRDIR_RPM            "${INSTALL_MYSQLDATADIR_RPM}/mysql.sock"
 SET(INSTALL_SYSTEMD_UNITDIR_RPM         "/usr/lib/systemd/system")
 SET(INSTALL_SYSTEMD_SYSUSERSDIR_RPM     "/usr/lib/sysusers.d")
 SET(INSTALL_SYSTEMD_TMPFILESDIR_RPM     "/usr/lib/tmpfiles.d")
+SET(INSTALL_PAMDIR_RPM                  "/lib/security")
 
 #
 # DEB layout
@@ -196,6 +196,11 @@ SET(INSTALL_UNIX_ADDRDIR_DEB            "/var/run/mysqld/mysqld.sock")
 SET(INSTALL_SYSTEMD_UNITDIR_DEB         "/lib/systemd/system")
 SET(INSTALL_SYSTEMD_SYSUSERSDIR_DEB     "/usr/lib/sysusers.d")
 SET(INSTALL_SYSTEMD_TMPFILESDIR_DEB     "/usr/lib/tmpfiles.d")
+IF(CMAKE_SIZEOF_VOID_P EQUAL 8)
+  SET(INSTALL_PAMDIR_DEB                  "/lib/x86_64-linux-gnu/security")
+ELSE()
+  SET(INSTALL_PAMDIR_DEB                  "/lib/i386-linux-gnu/security")
+ENDIF()
 
 #
 # SVR4 layout
@@ -235,17 +240,18 @@ SET(OLD_INSTALL_LAYOUT ${INSTALL_LAYOUT} CACHE INTERNAL "")
 # Set INSTALL_FOODIR variables for chosen layout (for example, INSTALL_BINDIR
 # will be defined  as ${INSTALL_BINDIR_STANDALONE} by default if STANDALONE
 # layout is chosen)
-FOREACH(var BIN SBIN LIB MYSQLSHARE SHARE PLUGIN INCLUDE SCRIPT DOC MAN SYSCONF SYSCONF2
-    INFO MYSQLTEST SQLBENCH DOCREADME SUPPORTFILES MYSQLDATA UNIX_ADDR
-    SYSTEMD_UNIT SYSTEMD_SYSUSERS SYSTEMD_TMPFILES)
-  SET(INSTALL_${var}DIR  ${INSTALL_${var}DIR_${INSTALL_LAYOUT}}
-  CACHE STRING "${var} installation directory" ${FORCE})
-  MARK_AS_ADVANCED(INSTALL_${var}DIR)
-
-  IF(IS_ABSOLUTE ${INSTALL_${var}DIR})
-    SET(INSTALL_${var}DIRABS ${INSTALL_${var}DIR})
-  ELSE()
-    SET(INSTALL_${var}DIRABS "${CMAKE_INSTALL_PREFIX}/${INSTALL_${var}DIR}")
+GET_CMAKE_PROPERTY(ALL_VARS VARIABLES)
+FOREACH (V ${ALL_VARS})
+  IF (V MATCHES "^(INSTALL_([A-Z_0-9]+)DIR)_${INSTALL_LAYOUT}$")
+    SET(var ${CMAKE_MATCH_1})
+    SET(${var} "${${V}}" CACHE STRING "${CMAKE_MATCH_2} installation directory" ${FORCE})
+    MARK_AS_ADVANCED(${var})
+
+    IF(IS_ABSOLUTE "${${var}}")
+      SET(${var}ABS "${${var}}")
+    ELSE()
+      SET(${var}ABS "${CMAKE_INSTALL_PREFIX}/${${var}}")
+    ENDIF()
   ENDIF()
 ENDFOREACH()
 
diff --git a/debian/mariadb-server-10.4.install b/debian/mariadb-server-10.4.install
index b6bfb04a344..c0a2c054229 100644
--- a/debian/mariadb-server-10.4.install
+++ b/debian/mariadb-server-10.4.install
@@ -4,7 +4,9 @@ debian/additions/echo_stderr usr/share/mysql
 debian/additions/mysql.init usr/share/mysql
 debian/additions/mysqld_safe_syslog.cnf etc/mysql/conf.d
 etc/apparmor.d/usr.sbin.mysqld
+etc/security/user_map.conf
 lib/systemd/system/mariadb@bootstrap.service.d/use_galera_new_cluster.conf
+lib/*/security/pam_user_map.so
 usr/bin/aria_chk
 usr/bin/aria_dump_log
 usr/bin/aria_ftdump
diff --git a/extra/mariabackup/CMakeLists.txt b/extra/mariabackup/CMakeLists.txt
index 5326ba9f8f5..796427107d4 100644
--- a/extra/mariabackup/CMakeLists.txt
+++ b/extra/mariabackup/CMakeLists.txt
@@ -94,7 +94,7 @@ ENDIF()
 
 
 ########################################################################
-# xbstream binary
+# mbstream binary
 ########################################################################
 MYSQL_ADD_EXECUTABLE(mbstream
   ds_buffer.cc
diff --git a/extra/mariabackup/innobackupex.cc b/extra/mariabackup/innobackupex.cc
index 38b1bcb6f58..f0e9c06b355 100644
--- a/extra/mariabackup/innobackupex.cc
+++ b/extra/mariabackup/innobackupex.cc
@@ -586,8 +586,8 @@ static struct my_option ibx_long_options[] =
 	{"stream", OPT_STREAM, "This option specifies the format in which to "
 	 "do the streamed backup.  The option accepts a string argument. The "
 	 "backup will be done to STDOUT in the specified format. Currently, "
-	 "the only supported formats are tar and xbstream. This option is "
-	 "passed directly to xtrabackup's --stream option.",
+	 "the only supported formats are tar and mbstream/xbstream. This "
+	 "option is passed directly to xtrabackup's --stream option.",
 	 (uchar*) &ibx_xtrabackup_stream_str,
 	 (uchar*) &ibx_xtrabackup_stream_str, 0, GET_STR,
 	 REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
@@ -655,7 +655,7 @@ innobackupex [--compress] [--compress-threads=NUMBER-OF-THREADS] [--compress-chu
              [--include=REGEXP] [--user=NAME]\n\
              [--password=WORD] [--port=PORT] [--socket=SOCKET]\n\
              [--no-timestamp] [--ibbackup=IBBACKUP-BINARY]\n\
-             [--slave-info] [--galera-info] [--stream=tar|xbstream]\n\
+             [--slave-info] [--galera-info] [--stream=tar|mbstream|xbstream]\n\
              [--defaults-file=MY.CNF] [--defaults-group=GROUP-NAME]\n\
              [--databases=LIST] [--no-lock] \n\
              [--tmpdir=DIRECTORY] [--tables-file=FILE]\n\
@@ -751,7 +751,8 @@ ibx_get_one_option(int optid,
 		}
 		break;
 	case OPT_STREAM:
-    if (!strcasecmp(argument, "xbstream"))
+		if (!strcasecmp(argument, "mbstream") ||
+		    !strcasecmp(argument, "xbstream"))
 			xtrabackup_stream_fmt = XB_STREAM_FMT_XBSTREAM;
 		else {
 			ibx_msg("Invalid --stream argument: %s\n", argument);
diff --git a/extra/mariabackup/xtrabackup.cc b/extra/mariabackup/xtrabackup.cc
index 869539dd96c..58b6e02adc6 100644
--- a/extra/mariabackup/xtrabackup.cc
+++ b/extra/mariabackup/xtrabackup.cc
@@ -906,7 +906,7 @@ struct my_option xb_client_options[] =
 
   {"stream", OPT_XTRA_STREAM, "Stream all backup files to the standard output "
    "in the specified format." 
-   "Supported format is 'xbstream'."
+   "Supported format is 'mbstream' or 'xbstream'."
    ,
    (G_PTR*) &xtrabackup_stream_str, (G_PTR*) &xtrabackup_stream_str, 0, GET_STR,
    REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
@@ -1713,7 +1713,8 @@ xb_get_one_option(int optid,
     xtrabackup_target_dir= xtrabackup_real_target_dir;
     break;
   case OPT_XTRA_STREAM:
-    if (!strcasecmp(argument, "xbstream"))
+    if (!strcasecmp(argument, "mbstream") ||
+        !strcasecmp(argument, "xbstream"))
       xtrabackup_stream_fmt = XB_STREAM_FMT_XBSTREAM;
     else
     {
diff --git a/libmariadb b/libmariadb
-Subproject a1283d0b10a3b675bede48d9fe2d082865a24a6
+Subproject 8e9c3116105d9a998a60991b7f4ba910d454d4b
diff --git a/mysql-test/main/default_session.result b/mysql-test/main/default_session.result
index 6c0bcad0cb3..1b0c5f3f67a 100644
--- a/mysql-test/main/default_session.result
+++ b/mysql-test/main/default_session.result
@@ -92,3 +92,31 @@ a
 STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
 REAL_AS_FLOAT,PIPES_AS_CONCAT,ANSI_QUOTES,IGNORE_SPACE,ANSI
 drop table t1;
+set time_zone='+00:00';
+create table t1 (a int, b datetime default from_unixtime(a), c datetime);
+insert t1 (a, c) values (1569495327, from_unixtime(1569495327));
+set time_zone='+01:00';
+insert t1 (a, c) values (1569495327, from_unixtime(1569495327));
+flush tables;
+insert t1 (a, c) values (1569495327, from_unixtime(1569495327));
+select * from t1;
+a	b	c
+1569495327	2019-09-26 10:55:27	2019-09-26 10:55:27
+1569495327	2019-09-26 11:55:27	2019-09-26 11:55:27
+1569495327	2019-09-26 11:55:27	2019-09-26 11:55:27
+drop table t1;
+set time_zone = "+00:00";
+create table t1 (a int, b timestamp as (from_unixtime(a)) virtual);
+insert into t1 (a) value (1569495327);
+select a, b, from_unixtime(a) from t1;
+a	b	from_unixtime(a)
+1569495327	2019-09-26 10:55:27	2019-09-26 10:55:27
+set time_zone = "+01:00";
+select a, b, from_unixtime(a) from t1;
+a	b	from_unixtime(a)
+1569495327	2019-09-26 11:55:27	2019-09-26 11:55:27
+flush tables;
+select a, b, from_unixtime(a) from t1;
+a	b	from_unixtime(a)
+1569495327	2019-09-26 11:55:27	2019-09-26 11:55:27
+drop table t1;
diff --git a/mysql-test/main/default_session.test b/mysql-test/main/default_session.test
index 7796354ffd4..5e582bd5ca1 100644
--- a/mysql-test/main/default_session.test
+++ b/mysql-test/main/default_session.test
@@ -80,3 +80,27 @@ insert t1 () values ();
 set sql_mode=default;
 select * from t1;
 drop table t1;
+
+#
+# MDEV-21249 MariaDB 10.3.10 When referring to bigint to generate timestamp data in the virtual generated column, the value of the generated column does not change when the time zone changes
+#
+set time_zone='+00:00';
+create table t1 (a int, b datetime default from_unixtime(a), c datetime);
+insert t1 (a, c) values (1569495327, from_unixtime(1569495327));
+set time_zone='+01:00';
+insert t1 (a, c) values (1569495327, from_unixtime(1569495327));
+flush tables;
+insert t1 (a, c) values (1569495327, from_unixtime(1569495327));
+select * from t1;
+drop table t1;
+
+# same with vcols
+set time_zone = "+00:00";
+create table t1 (a int, b timestamp as (from_unixtime(a)) virtual);
+insert into t1 (a) value (1569495327);
+select a, b, from_unixtime(a) from t1;
+set time_zone = "+01:00";
+select a, b, from_unixtime(a) from t1;
+flush tables;
+select a, b, from_unixtime(a) from t1;
+drop table t1;
diff --git a/mysql-test/main/func_regexp_pcre.result b/mysql-test/main/func_regexp_pcre.result
index e030df99756..494fe917dc6 100644
--- a/mysql-test/main/func_regexp_pcre.result
+++ b/mysql-test/main/func_regexp_pcre.result
@@ -888,33 +888,33 @@ Warning	1139	Got error 'pcre_exec: recursion limit of NUM exceeded' from regexp
 SELECT CONCAT(REPEAT('100,',60),'101') RLIKE '^(([1-9][0-9]*),)*[1-9][0-9]*$';
 CONCAT(REPEAT('100,',60),'101') RLIKE '^(([1-9][0-9]*),)*[1-9][0-9]*$'
 1
-SELECT CONCAT(REPEAT('100,',200),'101') RLIKE '^(([1-9][0-9]*),)*[1-9][0-9]*$';
-CONCAT(REPEAT('100,',200),'101') RLIKE '^(([1-9][0-9]*),)*[1-9][0-9]*$'
+SELECT CONCAT(REPEAT('100,',400),'101') RLIKE '^(([1-9][0-9]*),)*[1-9][0-9]*$';
+CONCAT(REPEAT('100,',400),'101') RLIKE '^(([1-9][0-9]*),)*[1-9][0-9]*$'
 0
 Warnings:
 Warning	1139	Got error 'pcre_exec: recursion limit of NUM exceeded' from regexp
 SELECT REGEXP_INSTR(CONCAT(REPEAT('100,',60),'101'), '^(([1-9][0-9]*),)*[1-9][0-9]*$');
 REGEXP_INSTR(CONCAT(REPEAT('100,',60),'101'), '^(([1-9][0-9]*),)*[1-9][0-9]*$')
 1
-SELECT REGEXP_INSTR(CONCAT(REPEAT('100,',200),'101'), '^(([1-9][0-9]*),)*[1-9][0-9]*$');
-REGEXP_INSTR(CONCAT(REPEAT('100,',200),'101'), '^(([1-9][0-9]*),)*[1-9][0-9]*$')
+SELECT REGEXP_INSTR(CONCAT(REPEAT('100,',400),'101'), '^(([1-9][0-9]*),)*[1-9][0-9]*$');
+REGEXP_INSTR(CONCAT(REPEAT('100,',400),'101'), '^(([1-9][0-9]*),)*[1-9][0-9]*$')
 0
 Warnings:
 Warning	1139	Got error 'pcre_exec: recursion limit of NUM exceeded' from regexp
 SELECT LENGTH(REGEXP_SUBSTR(CONCAT(REPEAT('100,',60),'101'), '^(([1-9][0-9]*),)*[1-9][0-9]*$'));
 LENGTH(REGEXP_SUBSTR(CONCAT(REPEAT('100,',60),'101'), '^(([1-9][0-9]*),)*[1-9][0-9]*$'))
 243
-SELECT LENGTH(REGEXP_SUBSTR(CONCAT(REPEAT('100,',200),'101'), '^(([1-9][0-9]*),)*[1-9][0-9]*$'));
-LENGTH(REGEXP_SUBSTR(CONCAT(REPEAT('100,',200),'101'), '^(([1-9][0-9]*),)*[1-9][0-9]*$'))
+SELECT LENGTH(REGEXP_SUBSTR(CONCAT(REPEAT('100,',400),'101'), '^(([1-9][0-9]*),)*[1-9][0-9]*$'));
+LENGTH(REGEXP_SUBSTR(CONCAT(REPEAT('100,',400),'101'), '^(([1-9][0-9]*),)*[1-9][0-9]*$'))
 0
 Warnings:
 Warning	1139	Got error 'pcre_exec: recursion limit of NUM exceeded' from regexp
 SELECT LENGTH(REGEXP_REPLACE(CONCAT(REPEAT('100,',60),'101'), '^(([1-9][0-9]*),)*[1-9][0-9]*$', ''));
 LENGTH(REGEXP_REPLACE(CONCAT(REPEAT('100,',60),'101'), '^(([1-9][0-9]*),)*[1-9][0-9]*$', ''))
 0
-SELECT LENGTH(REGEXP_REPLACE(CONCAT(REPEAT('100,',200),'101'), '^(([1-9][0-9]*),)*[1-9][0-9]*$', ''));
-LENGTH(REGEXP_REPLACE(CONCAT(REPEAT('100,',200),'101'), '^(([1-9][0-9]*),)*[1-9][0-9]*$', ''))
-803
+SELECT LENGTH(REGEXP_REPLACE(CONCAT(REPEAT('100,',400),'101'), '^(([1-9][0-9]*),)*[1-9][0-9]*$', ''));
+LENGTH(REGEXP_REPLACE(CONCAT(REPEAT('100,',400),'101'), '^(([1-9][0-9]*),)*[1-9][0-9]*$', ''))
+1603
 Warnings:
 Warning	1139	Got error 'pcre_exec: recursion limit of NUM exceeded' from regexp
 SELECT REGEXP_INSTR('a_kollision', 'oll');
diff --git a/mysql-test/main/func_regexp_pcre.test b/mysql-test/main/func_regexp_pcre.test
index 21600390bb2..de0fe94b7c1 100644
--- a/mysql-test/main/func_regexp_pcre.test
+++ b/mysql-test/main/func_regexp_pcre.test
@@ -438,19 +438,19 @@ SELECT 1 FROM dual WHERE ('Alpha,Bravo,Charlie,Delta,Echo,Foxtrot,StrataCentral,
 #
 SELECT CONCAT(REPEAT('100,',60),'101') RLIKE '^(([1-9][0-9]*),)*[1-9][0-9]*$';
 --replace_regex /[0-9]+ exceeded/NUM exceeded/
-SELECT CONCAT(REPEAT('100,',200),'101') RLIKE '^(([1-9][0-9]*),)*[1-9][0-9]*$';
+SELECT CONCAT(REPEAT('100,',400),'101') RLIKE '^(([1-9][0-9]*),)*[1-9][0-9]*$';
 
 SELECT REGEXP_INSTR(CONCAT(REPEAT('100,',60),'101'), '^(([1-9][0-9]*),)*[1-9][0-9]*$');
 --replace_regex /[0-9]+ exceeded/NUM exceeded/
-SELECT REGEXP_INSTR(CONCAT(REPEAT('100,',200),'101'), '^(([1-9][0-9]*),)*[1-9][0-9]*$');
+SELECT REGEXP_INSTR(CONCAT(REPEAT('100,',400),'101'), '^(([1-9][0-9]*),)*[1-9][0-9]*$');
 
 SELECT LENGTH(REGEXP_SUBSTR(CONCAT(REPEAT('100,',60),'101'), '^(([1-9][0-9]*),)*[1-9][0-9]*$'));
 --replace_regex /[0-9]+ exceeded/NUM exceeded/
-SELECT LENGTH(REGEXP_SUBSTR(CONCAT(REPEAT('100,',200),'101'), '^(([1-9][0-9]*),)*[1-9][0-9]*$'));
+SELECT LENGTH(REGEXP_SUBSTR(CONCAT(REPEAT('100,',400),'101'), '^(([1-9][0-9]*),)*[1-9][0-9]*$'));
 
 SELECT LENGTH(REGEXP_REPLACE(CONCAT(REPEAT('100,',60),'101'), '^(([1-9][0-9]*),)*[1-9][0-9]*$', ''));
 --replace_regex /[0-9]+ exceeded/NUM exceeded/
-SELECT LENGTH(REGEXP_REPLACE(CONCAT(REPEAT('100,',200),'101'), '^(([1-9][0-9]*),)*[1-9][0-9]*$', ''));
+SELECT LENGTH(REGEXP_REPLACE(CONCAT(REPEAT('100,',400),'101'), '^(([1-9][0-9]*),)*[1-9][0-9]*$', ''));
 
 #
 # MDEV-12942 REGEXP_INSTR returns 1 when using brackets
diff --git a/mysql-test/main/ssl_system_ca,bad.result b/mysql-test/main/ssl_system_ca,bad.result
new file mode 100644
index 00000000000..b9c6d3e29d8
--- /dev/null
+++ b/mysql-test/main/ssl_system_ca,bad.result
@@ -0,0 +1 @@
+ERROR 2026 (HY000): SSL connection error: Validation of SSL server certificate failed
diff --git a/mysql-test/main/ssl_system_ca.combinations b/mysql-test/main/ssl_system_ca.combinations
new file mode 100644
index 00000000000..6e3576ada15
--- /dev/null
+++ b/mysql-test/main/ssl_system_ca.combinations
@@ -0,0 +1,11 @@
+[good]
+#
+# hostname on the certificate is localhost
+#
+
+[bad]
+#
+# hostname on the certificate is server8k
+#
+loose-ssl-key=$MYSQL_TEST_DIR/std_data/server8k-key.pem
+loose-ssl-cert=$MYSQL_TEST_DIR/std_data/server8k-cert.pem
diff --git a/mysql-test/main/ssl_system_ca.result b/mysql-test/main/ssl_system_ca.result
new file mode 100644
index 00000000000..78f8bf805dd
--- /dev/null
+++ b/mysql-test/main/ssl_system_ca.result
@@ -0,0 +1,2 @@
+*************************** 1. row ***************************
+have_ssl: 1
diff --git a/mysql-test/main/ssl_system_ca.test b/mysql-test/main/ssl_system_ca.test
new file mode 100644
index 00000000000..920e391090f
--- /dev/null
+++ b/mysql-test/main/ssl_system_ca.test
@@ -0,0 +1,22 @@
+#
+# Tests here don't use --ssl-ca but expect the certificate to be
+# signed by a CA in a system CA store
+#
+# They only work for openssl, because the following line works only there:
+let SSL_CERT_DIR=$MYSQL_TMP_DIR;
+
+source include/not_embedded.inc;
+
+if (`select @@version_ssl_library not like 'OpenSSL%'`) {
+  skip Needs OpenSSL;
+}
+
+# See `openssl x509 -in cacert.pem -noout -issuer_hash`
+copy_file $MYSQL_TEST_DIR/std_data/cacert.pem $MYSQL_TMP_DIR/ed1f42db.0;
+
+#
+# test --ssl-verify-server-cert
+#
+
+disable_abort_on_error;
+exec $MYSQL --ssl-verify-server-cert -Ee "select (variable_value <> '') as have_ssl from information_schema.session_status where variable_name='ssl_cipher'" 2>&1;
diff --git a/mysql-test/suite/binlog/include/binlog_index.inc b/mysql-test/suite/binlog/include/binlog_index.inc
index b930386a0ba..d73091d59ab 100644
--- a/mysql-test/suite/binlog/include/binlog_index.inc
+++ b/mysql-test/suite/binlog/include/binlog_index.inc
@@ -22,7 +22,7 @@ call mtr.add_suppression('Could not use .*');
 call mtr.add_suppression('MYSQL_BIN_LOG::purge_logs failed to clean registers before purging logs.');
 flush tables;
 
-let $old=`select @@debug`;
+SET @saved_dbug = @@SESSION.debug_dbug;
 
 RESET MASTER;
 
@@ -273,6 +273,6 @@ SELECT @index;
 -- replace_regex /\.[\\\/]master/master/
 SELECT @index;
 
-eval SET SESSION debug_dbug="$old";
+SET @@SESSION.debug_dbug = @saved_dbug;
 
 --echo End of tests
diff --git a/mysql-test/suite/binlog/r/binlog_index.result b/mysql-test/suite/binlog/r/binlog_index.result
index ba91cac20e3..f643c5a9c35 100644
--- a/mysql-test/suite/binlog/r/binlog_index.result
+++ b/mysql-test/suite/binlog/r/binlog_index.result
@@ -5,6 +5,7 @@ call mtr.add_suppression('Turning logging off for the whole duration of the MySQ
 call mtr.add_suppression('Could not use .*');
 call mtr.add_suppression('MYSQL_BIN_LOG::purge_logs failed to clean registers before purging logs.');
 flush tables;
+SET @saved_dbug = @@SESSION.debug_dbug;
 RESET MASTER;
 flush logs;
 flush logs;
@@ -185,5 +186,5 @@ master-bin.000011
 master-bin.000012
 master-bin.000013
 
-SET SESSION debug_dbug="";
+SET @@SESSION.debug_dbug = @saved_dbug;
 End of tests
diff --git a/mysql-test/suite/binlog_encryption/binlog_index.result b/mysql-test/suite/binlog_encryption/binlog_index.result
index ba91cac20e3..f643c5a9c35 100644
--- a/mysql-test/suite/binlog_encryption/binlog_index.result
+++ b/mysql-test/suite/binlog_encryption/binlog_index.result
@@ -5,6 +5,7 @@ call mtr.add_suppression('Turning logging off for the whole duration of the MySQ
 call mtr.add_suppression('Could not use .*');
 call mtr.add_suppression('MYSQL_BIN_LOG::purge_logs failed to clean registers before purging logs.');
 flush tables;
+SET @saved_dbug = @@SESSION.debug_dbug;
 RESET MASTER;
 flush logs;
 flush logs;
@@ -185,5 +186,5 @@ master-bin.000011
 master-bin.000012
 master-bin.000013
 
-SET SESSION debug_dbug="";
+SET @@SESSION.debug_dbug = @saved_dbug;
 End of tests
diff --git a/mysql-test/suite/binlog_encryption/rpl_corruption.result b/mysql-test/suite/binlog_encryption/rpl_corruption.result
index db72bb304fc..f32b7c58ad1 100644
--- a/mysql-test/suite/binlog_encryption/rpl_corruption.result
+++ b/mysql-test/suite/binlog_encryption/rpl_corruption.result
@@ -34,10 +34,11 @@ START SLAVE IO_THREAD;
 include/wait_for_slave_io_error.inc [errno=1595,1743]
 connection master;
 SET GLOBAL debug_dbug="-d,corrupt_read_log_event2_set";
-SET GLOBAL debug_dbug= "";
+SET GLOBAL debug_dbug=@saved_dbug;
 SET GLOBAL master_verify_checksum=1;
 # 5. Slave. Corruption in network
 connection slave;
+SET @saved_dbug_slave = @@GLOBAL.debug_dbug;
 SET GLOBAL debug_dbug="+d,corrupt_queue_event";
 START SLAVE IO_THREAD;
 include/wait_for_slave_io_error.inc [errno=1595,1743]
@@ -47,7 +48,7 @@ SET GLOBAL debug_dbug="+d,corrupt_read_log_event_char";
 START SLAVE SQL_THREAD;
 include/wait_for_slave_sql_error.inc [errno=1593]
 SET GLOBAL debug_dbug="-d,corrupt_read_log_event_char";
-SET GLOBAL debug_dbug= "";
+SET GLOBAL debug_dbug=@saved_dbug_slave;
 # 7. Seek diff for tables on master and slave
 connection slave;
 include/start_slave.inc
@@ -60,5 +61,4 @@ set @@global.debug_dbug = @saved_dbug;
 SET GLOBAL master_verify_checksum = @old_master_verify_checksum;
 DROP TABLE t1;
 connection slave;
-set @@global.debug_dbug = @saved_dbug;
 include/rpl_end.inc
diff --git a/mysql-test/suite/binlog_encryption/rpl_parallel.result b/mysql-test/suite/binlog_encryption/rpl_parallel.result
index 5f78a378829..4e1740f1dc6 100644
--- a/mysql-test/suite/binlog_encryption/rpl_parallel.result
+++ b/mysql-test/suite/binlog_encryption/rpl_parallel.result
@@ -1513,7 +1513,7 @@ SET GLOBAL slave_parallel_threads=10;
 SET @old_dbug= @@GLOBAL.debug_dbug;
 SET GLOBAL debug_dbug= '+d,inject_analyze_table_sleep';
 connection server_1;
-SET @old_dbug= @@SESSION.debug_dbug;
+SET @old_dbug_slave= @@SESSION.debug_dbug;
 SET SESSION debug_dbug="+d,binlog_force_commit_id";
 SET @commit_id= 10000;
 ANALYZE TABLE t2;
@@ -1523,7 +1523,7 @@ test.t2	analyze	status	OK
 INSERT INTO t3 VALUES (120, 0);
 SET @commit_id= 10001;
 INSERT INTO t3 VALUES (121, 0);
-SET SESSION debug_dbug=@old_dbug;
+SET SESSION debug_dbug=@old_dbug_slave;
 SELECT * FROM t3 WHERE a >= 120 ORDER BY a;
 a	b
 120	0
@@ -1545,7 +1545,7 @@ include/stop_slave.inc
 SET @old_dbug= @@GLOBAL.debug_dbug;
 SET GLOBAL debug_dbug= '+d,inject_record_gtid_serverid_100_sleep';
 connection server_1;
-SET @old_dbug= @@SESSION.debug_dbug;
+SET @old_dbug_slave= @@SESSION.debug_dbug;
 SET SESSION debug_dbug="+d,binlog_force_commit_id";
 SET @old_server_id= @@SESSION.server_id;
 SET SESSION server_id= 100;
@@ -1555,7 +1555,7 @@ SET SESSION server_id= @old_server_id;
 INSERT INTO t3 VALUES (130, 0);
 SET @commit_id= 10011;
 INSERT INTO t3 VALUES (131, 0);
-SET SESSION debug_dbug=@old_dbug;
+SET SESSION debug_dbug=@old_dbug_slave;
 SELECT * FROM t3 WHERE a >= 130 ORDER BY a;
 a	b
 130	0
@@ -1581,7 +1581,7 @@ include/stop_slave.inc
 SET @old_dbug= @@GLOBAL.debug_dbug;
 SET GLOBAL debug_dbug= '+d,inject_mdev8031';
 connection server_1;
-SET @old_dbug= @@SESSION.debug_dbug;
+SET @old_dbug_slave= @@SESSION.debug_dbug;
 SET SESSION debug_dbug="+d,binlog_force_commit_id";
 SET @commit_id= 10200;
 INSERT INTO t3 VALUES (203, 1);
@@ -1602,7 +1602,7 @@ UPDATE t3 SET b=b+1 WHERE a=204;
 UPDATE t3 SET b=b+1 WHERE a=203;
 UPDATE t3 SET b=b+1 WHERE a=205;
 UPDATE t3 SET b=b+1 WHERE a=205;
-SET SESSION debug_dbug=@old_dbug;
+SET SESSION debug_dbug=@old_dbug_slave;
 SELECT * FROM t3 WHERE a>=200 ORDER BY a;
 a	b
 201	3
@@ -1632,11 +1632,11 @@ SET GLOBAL debug_dbug= '+d,inject_retry_event_group_open_binlog_kill';
 SET @old_max= @@GLOBAL.max_relay_log_size;
 SET GLOBAL max_relay_log_size= 4096;
 connection server_1;
-SET @old_dbug= @@SESSION.debug_dbug;
+SET @old_dbug_slave= @@SESSION.debug_dbug;
 SET SESSION debug_dbug="+d,binlog_force_commit_id";
 SET @commit_id= 10210;
 Omit long queries that cause relaylog rotations and transaction retries...
-SET SESSION debug_dbug=@old_dbug;
+SET SESSION debug_dbug=@old_dbug_slave;
 SELECT * FROM t3 WHERE a>=200 ORDER BY a;
 a	b
 201	6
@@ -1656,7 +1656,7 @@ a	b
 204	7
 205	5
 include/stop_slave.inc
-SET GLOBAL debug_dbug= @old_debg;
+SET GLOBAL debug_dbug= @old_dbug;
 SET GLOBAL max_relay_log_size= @old_max;
 include/start_slave.inc
 *** MDEV-8725: Assertion on ROLLBACK statement in the binary log ***
diff --git a/mysql-test/suite/binlog_encryption/rpl_parallel_ignored_errors.result b/mysql-test/suite/binlog_encryption/rpl_parallel_ignored_errors.result
index 570d2534ed7..3dd5a3ea83c 100644
--- a/mysql-test/suite/binlog_encryption/rpl_parallel_ignored_errors.result
+++ b/mysql-test/suite/binlog_encryption/rpl_parallel_ignored_errors.result
@@ -4,7 +4,7 @@ connection server_2;
 include/stop_slave.inc
 SET @old_parallel_threads=@@GLOBAL.slave_parallel_threads;
 SET @old_parallel_mode=@@GLOBAL.slave_parallel_mode;
-SET @old_dbug= @@GLOBAL.debug_dbug;
+SET @old_debug= @@GLOBAL.debug_dbug;
 SET GLOBAL slave_parallel_mode='optimistic';
 SET GLOBAL slave_parallel_threads= 3;
 CHANGE MASTER TO master_use_gtid=slave_pos;
diff --git a/mysql-test/suite/innodb/r/innodb_bug30113362.result b/mysql-test/suite/innodb/r/innodb_bug30113362.result
index 6e7cafbecbb..cb0f5091650 100644
--- a/mysql-test/suite/innodb/r/innodb_bug30113362.result
+++ b/mysql-test/suite/innodb/r/innodb_bug30113362.result
@@ -64,11 +64,11 @@ SET DEBUG_SYNC = 'now WAIT_FOR roll1_wait';
 COMMIT;
 SET DEBUG_SYNC = 'now SIGNAL roll2';
 connect  con1,localhost,root,,;
-SET DEBUG_SYNC = 'now WAIT_FOR rollback_waiting';
+SET DEBUG_SYNC = 'now WAIT_FOR rollback_waiting TIMEOUT 1';
 SET DEBUG_SYNC = 'rw_s_lock_waiting SIGNAL lockwait1';
 SELECT a00 FROM t1 WHERE a00 = 'bii';
 connection default;
-SET DEBUG_SYNC = 'now WAIT_FOR lockwait1';
+SET DEBUG_SYNC = 'now WAIT_FOR lockwait1 TIMEOUT 1';
 SET DEBUG_SYNC = 'now SIGNAL resume';
 connection con1;
 a00
diff --git a/mysql-test/suite/innodb/t/innodb_bug30113362.test b/mysql-test/suite/innodb/t/innodb_bug30113362.test
index 6d8833a38fc..de5d07ffb29 100644
--- a/mysql-test/suite/innodb/t/innodb_bug30113362.test
+++ b/mysql-test/suite/innodb/t/innodb_bug30113362.test
@@ -106,12 +106,18 @@ COMMIT;
 SET DEBUG_SYNC = 'now SIGNAL roll2';
 
 connect (con1,localhost,root,,);
-SET DEBUG_SYNC = 'now WAIT_FOR rollback_waiting';
+# FIXME: This occasionally times out!
+--disable_warnings
+SET DEBUG_SYNC = 'now WAIT_FOR rollback_waiting TIMEOUT 1';
+--enable_warnings
 SET DEBUG_SYNC = 'rw_s_lock_waiting SIGNAL lockwait1';
 send SELECT a00 FROM t1 WHERE a00 = 'bii';
 
 connection default;
-SET DEBUG_SYNC = 'now WAIT_FOR lockwait1';
+# FIXME: This occasionally times out!
+--disable_warnings
+SET DEBUG_SYNC = 'now WAIT_FOR lockwait1 TIMEOUT 1';
+--enable_warnings
 # bug#30113362 caused deadlock
 SET DEBUG_SYNC = 'now SIGNAL resume';
 
diff --git a/mysql-test/suite/innodb_fts/r/concurrent_insert.result b/mysql-test/suite/innodb_fts/r/concurrent_insert.result
index 9be7ba35f30..e91ea02b1de 100644
--- a/mysql-test/suite/innodb_fts/r/concurrent_insert.result
+++ b/mysql-test/suite/innodb_fts/r/concurrent_insert.result
@@ -29,7 +29,7 @@ ALTER TABLE t2 drop index idx1;
 connection default;
 set DEBUG_SYNC= 'now SIGNAL fts_drop_index';
 connection con1;
-SET @@GLOBAL.debug_dbug = @saved_dbug;
 drop table t1, t2;
 connection default;
 set DEBUG_SYNC=RESET;
+SET @@GLOBAL.debug_dbug = @saved_dbug;
diff --git a/mysql-test/suite/innodb_fts/r/sync_block.result b/mysql-test/suite/innodb_fts/r/sync_block.result
index f9f695c42f4..65bee127e80 100644
--- a/mysql-test/suite/innodb_fts/r/sync_block.result
+++ b/mysql-test/suite/innodb_fts/r/sync_block.result
@@ -39,7 +39,7 @@ SLEEP(2)
 SELECT sql_text FROM mysql.slow_log WHERE query_time >= '00:00:02';
 sql_text
 INSERT INTO t1(title) VALUES('mysql database')
-SET GLOBAL debug_dbug = @old_debug_dbug;
+SET GLOBAL debug_dbug = @old_debug;
 TRUNCATE TABLE mysql.slow_log;
 DROP TABLE t1;
 # Case 2: Sync blocks DML(insert) on other tables.
@@ -71,7 +71,7 @@ SLEEP(2)
 # slow log results should be empty here.
 SELECT sql_text FROM mysql.slow_log WHERE query_time >= '00:00:02';
 sql_text
-SET GLOBAL debug_dbug = @old_debug_dbug;
+SET GLOBAL debug_dbug = @old_debug;
 TRUNCATE TABLE mysql.slow_log;
 DROP TABLE t1,t2;
 disconnect con1;
diff --git a/mysql-test/suite/innodb_fts/t/concurrent_insert.test b/mysql-test/suite/innodb_fts/t/concurrent_insert.test
index 1505767d835..35debd87cea 100644
--- a/mysql-test/suite/innodb_fts/t/concurrent_insert.test
+++ b/mysql-test/suite/innodb_fts/t/concurrent_insert.test
@@ -46,7 +46,7 @@ set DEBUG_SYNC= 'now SIGNAL fts_drop_index';
 
 connection con1;
 reap;
-SET @@GLOBAL.debug_dbug = @saved_dbug;
 drop table t1, t2;
 connection default;
 set DEBUG_SYNC=RESET;
+SET @@GLOBAL.debug_dbug = @saved_dbug;
diff --git a/mysql-test/suite/innodb_fts/t/sync_block.test b/mysql-test/suite/innodb_fts/t/sync_block.test
index 1dd3c2bc38e..895d2ba8a59 100644
--- a/mysql-test/suite/innodb_fts/t/sync_block.test
+++ b/mysql-test/suite/innodb_fts/t/sync_block.test
@@ -61,7 +61,7 @@ SELECT SLEEP(2);
 -- echo # slow log results should only contain INSERT INTO t1.
 SELECT sql_text FROM mysql.slow_log WHERE query_time >= '00:00:02';
 
-SET GLOBAL debug_dbug = @old_debug_dbug;
+SET GLOBAL debug_dbug = @old_debug;
 TRUNCATE TABLE mysql.slow_log;
 
 DROP TABLE t1;
@@ -107,7 +107,7 @@ SELECT SLEEP(2);
 -- echo # slow log results should be empty here.
 SELECT sql_text FROM mysql.slow_log WHERE query_time >= '00:00:02';
 
-SET GLOBAL debug_dbug = @old_debug_dbug;
+SET GLOBAL debug_dbug = @old_debug;
 TRUNCATE TABLE mysql.slow_log;
 
 DROP TABLE t1,t2;
diff --git a/mysql-test/suite/maria/aria_pack_mdev14183.result b/mysql-test/suite/maria/aria_pack_mdev14183.result
new file mode 100644
index 00000000000..b20f60c5b8a
--- /dev/null
+++ b/mysql-test/suite/maria/aria_pack_mdev14183.result
@@ -0,0 +1,22 @@
+CREATE TABLE `t` (
+`col_1` varchar(255) NOT NULL DEFAULT '',
+`col_2` varchar(255) NOT NULL,
+`col_3` int(11) NOT NULL DEFAULT '0',
+`col_4` int(11) NOT NULL DEFAULT '0'
+) ENGINE=Aria TRANSACTIONAL=0 PAGE_CHECKSUM=0;
+insert into t values
+('foobar','qux',0,0),('abcdef','qux',0,0);
+Compressing test/t.MAD: (2 records)
+- Calculating statistics
+
+normal:      0  empty-space:       0  empty-zero:         0  empty-fill:   0
+pre-space:   0  end-space:         0  intervall-fields:   0  zero:         2
+Original trees:  4  After join: 1
+- Compressing file
+Min record length:      5   Max length:      5   Mean total length:     35
+99.57%     
+SELECT * FROM t;
+col_1	col_2	col_3	col_4
+foobar	qux	0	0
+abcdef	qux	0	0
+DROP TABLE t;
diff --git a/mysql-test/suite/maria/aria_pack_mdev14183.test b/mysql-test/suite/maria/aria_pack_mdev14183.test
new file mode 100644
index 00000000000..5386ae774a0
--- /dev/null
+++ b/mysql-test/suite/maria/aria_pack_mdev14183.test
@@ -0,0 +1,23 @@
+--source include/have_aria.inc
+--source include/have_debug.inc
+--source include/not_embedded.inc
+
+CREATE TABLE `t` (
+  `col_1` varchar(255) NOT NULL DEFAULT '',
+  `col_2` varchar(255) NOT NULL,
+  `col_3` int(11) NOT NULL DEFAULT '0',
+  `col_4` int(11) NOT NULL DEFAULT '0'
+) ENGINE=Aria TRANSACTIONAL=0 PAGE_CHECKSUM=0;
+
+insert into t values
+  ('foobar','qux',0,0),('abcdef','qux',0,0);
+
+--let $datadir= `SELECT @@datadir`
+--source include/shutdown_mysqld.inc
+# maria_pack crashes by assert() if the bug is not fixed
+--exec cd $datadir && $MARIA_PACK -t test/t
+
+--source include/start_mysqld.inc
+SELECT * FROM t;
+
+DROP TABLE t;
diff --git a/mysql-test/suite/rpl/include/rpl_corruption.inc b/mysql-test/suite/rpl/include/rpl_corruption.inc
index 88f683ed53d..4106bb45eef 100644
--- a/mysql-test/suite/rpl/include/rpl_corruption.inc
+++ b/mysql-test/suite/rpl/include/rpl_corruption.inc
@@ -131,12 +131,13 @@ let $slave_io_errno= 1595,1743; # ER_SLAVE_RELAY_LOG_WRITE_FAILURE, ER_NETWORK_R
 --source include/wait_for_slave_io_error.inc
 --connection master
 SET GLOBAL debug_dbug="-d,corrupt_read_log_event2_set";
-SET GLOBAL debug_dbug= "";
+SET GLOBAL debug_dbug=@saved_dbug;
 SET GLOBAL master_verify_checksum=1;
 
 # Emulate corruption in network
 --echo # 5. Slave. Corruption in network
 --connection slave
+SET @saved_dbug_slave = @@GLOBAL.debug_dbug;
 SET GLOBAL debug_dbug="+d,corrupt_queue_event";
 START SLAVE IO_THREAD;
 let $slave_io_errno= 1595,1743; # ER_SLAVE_RELAY_LOG_WRITE_FAILURE, ER_NETWORK_READ_EVENT_CHECKSUM_FAILURE
@@ -153,7 +154,7 @@ let $slave_sql_errno= 1593;
 --source include/wait_for_slave_sql_error.inc
 
 SET GLOBAL debug_dbug="-d,corrupt_read_log_event_char";
-SET GLOBAL debug_dbug= "";
+SET GLOBAL debug_dbug=@saved_dbug_slave;
 
 # Start normal replication and compare same table on master
 # and slave
@@ -172,6 +173,5 @@ set @@global.debug_dbug = @saved_dbug;
 SET GLOBAL master_verify_checksum = @old_master_verify_checksum;
 DROP TABLE t1;
 --sync_slave_with_master
-set @@global.debug_dbug = @saved_dbug;
 
 --source include/rpl_end.inc
diff --git a/mysql-test/suite/rpl/include/rpl_parallel.inc b/mysql-test/suite/rpl/include/rpl_parallel.inc
index 42354343084..b88d2126d4d 100644
--- a/mysql-test/suite/rpl/include/rpl_parallel.inc
+++ b/mysql-test/suite/rpl/include/rpl_parallel.inc
@@ -1951,7 +1951,6 @@ SELECT * FROM t2 WHERE a >= 1040 ORDER BY a;
 --source include/stop_slave.inc
 SET GLOBAL debug_dbug=@old_dbug;
 
-
 --echo *** MDEV-6676 - test disabling domain-based parallel replication ***
 --connection server_1
 # Let's do a bunch of transactions that will conflict if run out-of-order in
@@ -2000,7 +1999,7 @@ SET GLOBAL debug_dbug= '+d,inject_analyze_table_sleep';
 # so sleep is ok here. And it's in general not possible to trigger reliably
 # the race with debug_sync, since the bugfix makes the race impossible).
 
-SET @old_dbug= @@SESSION.debug_dbug;
+SET @old_dbug_slave= @@SESSION.debug_dbug;
 SET SESSION debug_dbug="+d,binlog_force_commit_id";
 
 # Group commit with cid=10000, two event groups.
@@ -2012,7 +2011,7 @@ INSERT INTO t3 VALUES (120, 0);
 SET @commit_id= 10001;
 INSERT INTO t3 VALUES (121, 0);
 
-SET SESSION debug_dbug=@old_dbug;
+SET SESSION debug_dbug=@old_dbug_slave;
 
 SELECT * FROM t3 WHERE a >= 120 ORDER BY a;
 --source include/save_master_gtid.inc
@@ -2044,7 +2043,7 @@ SET GLOBAL debug_dbug= '+d,inject_record_gtid_serverid_100_sleep';
 # We inject a small sleep in the corresponding record_gtid() to make the race
 # easier to hit.
 
-SET @old_dbug= @@SESSION.debug_dbug;
+SET @old_dbug_slave= @@SESSION.debug_dbug;
 SET SESSION debug_dbug="+d,binlog_force_commit_id";
 
 # Group commit with cid=10010, two event groups.
@@ -2059,8 +2058,7 @@ INSERT INTO t3 VALUES (130, 0);
 SET @commit_id= 10011;
 INSERT INTO t3 VALUES (131, 0);
 
-SET SESSION debug_dbug=@old_dbug;
-
+SET SESSION debug_dbug=@old_dbug_slave;
 SELECT * FROM t3 WHERE a >= 130 ORDER BY a;
 --source include/save_master_gtid.inc
 
@@ -2097,7 +2095,7 @@ SET GLOBAL debug_dbug= '+d,inject_mdev8031';
 # complete. Finally an extra KILL check catches an unhandled, lingering
 # deadlock kill. So rather artificial, but at least it exercises the
 # relevant code paths.
-SET @old_dbug= @@SESSION.debug_dbug;
+SET @old_dbug_slave= @@SESSION.debug_dbug;
 SET SESSION debug_dbug="+d,binlog_force_commit_id";
 
 SET @commit_id= 10200;
@@ -2119,7 +2117,7 @@ UPDATE t3 SET b=b+1 WHERE a=204;
 UPDATE t3 SET b=b+1 WHERE a=203;
 UPDATE t3 SET b=b+1 WHERE a=205;
 UPDATE t3 SET b=b+1 WHERE a=205;
-SET SESSION debug_dbug=@old_dbug;
+SET SESSION debug_dbug=@old_dbug_slave;
 
 SELECT * FROM t3 WHERE a>=200 ORDER BY a;
 --source include/save_master_gtid.inc
@@ -2144,7 +2142,7 @@ SET @old_max= @@GLOBAL.max_relay_log_size;
 SET GLOBAL max_relay_log_size= 4096;
 
 --connection server_1
-SET @old_dbug= @@SESSION.debug_dbug;
+SET @old_dbug_slave= @@SESSION.debug_dbug;
 SET SESSION debug_dbug="+d,binlog_force_commit_id";
 
 --let $large= `SELECT REPEAT("*", 8192)`
@@ -2167,7 +2165,7 @@ eval UPDATE t3 SET b=b+1 WHERE a=203 /* $large */;
 eval UPDATE t3 SET b=b+1 WHERE a=205 /* $large */;
 eval UPDATE t3 SET b=b+1 WHERE a=205 /* $large */;
 --enable_query_log
-SET SESSION debug_dbug=@old_dbug;
+SET SESSION debug_dbug=@old_dbug_slave;
 
 SELECT * FROM t3 WHERE a>=200 ORDER BY a;
 --source include/save_master_gtid.inc
@@ -2178,7 +2176,7 @@ SELECT * FROM t3 WHERE a>=200 ORDER BY a;
 
 SELECT * FROM t3 WHERE a>=200 ORDER BY a;
 --source include/stop_slave.inc
-SET GLOBAL debug_dbug= @old_debg;
+SET GLOBAL debug_dbug= @old_dbug;
 SET GLOBAL max_relay_log_size= @old_max;
 --source include/start_slave.inc
 
diff --git a/mysql-test/suite/rpl/include/rpl_parallel_ignored_errors.inc b/mysql-test/suite/rpl/include/rpl_parallel_ignored_errors.inc
index 25da12f30a3..7a6a758a508 100644
--- a/mysql-test/suite/rpl/include/rpl_parallel_ignored_errors.inc
+++ b/mysql-test/suite/rpl/include/rpl_parallel_ignored_errors.inc
@@ -47,7 +47,7 @@
 --source include/stop_slave.inc
 SET @old_parallel_threads=@@GLOBAL.slave_parallel_threads;
 SET @old_parallel_mode=@@GLOBAL.slave_parallel_mode;
-SET @old_dbug= @@GLOBAL.debug_dbug;
+SET @old_debug= @@GLOBAL.debug_dbug;
 SET GLOBAL slave_parallel_mode='optimistic';
 SET GLOBAL slave_parallel_threads= 3;
 CHANGE MASTER TO master_use_gtid=slave_pos;
diff --git a/mysql-test/suite/rpl/include/rpl_stop_middle_group.test b/mysql-test/suite/rpl/include/rpl_stop_middle_group.test
index 43c561c5b85..5c88c14d9b5 100644
--- a/mysql-test/suite/rpl/include/rpl_stop_middle_group.test
+++ b/mysql-test/suite/rpl/include/rpl_stop_middle_group.test
@@ -13,6 +13,7 @@ create table tm (a int auto_increment primary key) engine=myisam;
 create table ti (a int auto_increment primary key) engine=innodb;
 
 sync_slave_with_master;
+SET @saved_dbug = @@GLOBAL.debug_dbug;
 set @@global.debug_dbug="+d,stop_slave_middle_group";
 
 connection master;
@@ -135,8 +136,7 @@ eval SELECT "$error" AS Last_SQL_Error, @check as `true`;
 select max(a) as two from tm;
 select max(a) as one from ti;
 
-set @@global.debug_dbug="-d";
-
+SET @@GLOBAL.debug_dbug = @saved_dbug;
 #
 # clean-up
 #
diff --git a/mysql-test/suite/rpl/r/circular_serverid0.result b/mysql-test/suite/rpl/r/circular_serverid0.result
index 112f9359ac4..928a0a48888 100644
--- a/mysql-test/suite/rpl/r/circular_serverid0.result
+++ b/mysql-test/suite/rpl/r/circular_serverid0.result
@@ -1,9 +1,9 @@
 include/rpl_init.inc [topology=1->2->1]
 include/rpl_connect.inc [creating M4]
 include/rpl_connect.inc [creating M2]
-SET @old_debug= @@global.debug;
 connection M2;
 STOP SLAVE;
+SET @old_debug= @@global.debug;
 SET GLOBAL debug_dbug= "+d,dbug.rows_events_to_delay_relay_logging";
 START SLAVE IO_THREAD;
 include/wait_for_slave_io_to_start.inc
diff --git a/mysql-test/suite/rpl/r/rpl_corruption.result b/mysql-test/suite/rpl/r/rpl_corruption.result
index db72bb304fc..f32b7c58ad1 100644
--- a/mysql-test/suite/rpl/r/rpl_corruption.result
+++ b/mysql-test/suite/rpl/r/rpl_corruption.result
@@ -34,10 +34,11 @@ START SLAVE IO_THREAD;
 include/wait_for_slave_io_error.inc [errno=1595,1743]
 connection master;
 SET GLOBAL debug_dbug="-d,corrupt_read_log_event2_set";
-SET GLOBAL debug_dbug= "";
+SET GLOBAL debug_dbug=@saved_dbug;
 SET GLOBAL master_verify_checksum=1;
 # 5. Slave. Corruption in network
 connection slave;
+SET @saved_dbug_slave = @@GLOBAL.debug_dbug;
 SET GLOBAL debug_dbug="+d,corrupt_queue_event";
 START SLAVE IO_THREAD;
 include/wait_for_slave_io_error.inc [errno=1595,1743]
@@ -47,7 +48,7 @@ SET GLOBAL debug_dbug="+d,corrupt_read_log_event_char";
 START SLAVE SQL_THREAD;
 include/wait_for_slave_sql_error.inc [errno=1593]
 SET GLOBAL debug_dbug="-d,corrupt_read_log_event_char";
-SET GLOBAL debug_dbug= "";
+SET GLOBAL debug_dbug=@saved_dbug_slave;
 # 7. Seek diff for tables on master and slave
 connection slave;
 include/start_slave.inc
@@ -60,5 +61,4 @@ set @@global.debug_dbug = @saved_dbug;
 SET GLOBAL master_verify_checksum = @old_master_verify_checksum;
 DROP TABLE t1;
 connection slave;
-set @@global.debug_dbug = @saved_dbug;
 include/rpl_end.inc
diff --git a/mysql-test/suite/rpl/r/rpl_domain_id_filter_io_crash.result b/mysql-test/suite/rpl/r/rpl_domain_id_filter_io_crash.result
index a2b1d03c4fd..b8415977154 100644
--- a/mysql-test/suite/rpl/r/rpl_domain_id_filter_io_crash.result
+++ b/mysql-test/suite/rpl/r/rpl_domain_id_filter_io_crash.result
@@ -26,6 +26,7 @@ CHANGE MASTER TO IGNORE_DOMAIN_IDS=(), MASTER_USE_GTID=slave_pos;
 include/start_slave.inc
 DO_DOMAIN_IDS (AFTER)     : 
 IGNORE_DOMAIN_IDS (AFTER) : 
+SET @saved_dbug = @@GLOBAL.debug_dbug;
 SET @@global.debug_dbug="+d,kill_slave_io_before_commit";
 connection master;
 START TRANSACTION;
@@ -414,4 +415,5 @@ connection slave;
 include/stop_slave.inc
 CHANGE MASTER TO DO_DOMAIN_IDS=(), IGNORE_DOMAIN_IDS=();
 include/start_slave.inc
+SET @@GLOBAL.debug_dbug = @saved_dbug;
 include/rpl_end.inc
diff --git a/mysql-test/suite/rpl/r/rpl_domain_id_filter_master_crash.result b/mysql-test/suite/rpl/r/rpl_domain_id_filter_master_crash.result
index 457947cabe0..0a414cb3b1f 100644
--- a/mysql-test/suite/rpl/r/rpl_domain_id_filter_master_crash.result
+++ b/mysql-test/suite/rpl/r/rpl_domain_id_filter_master_crash.result
@@ -37,7 +37,6 @@ IGNORE_DOMAIN_IDS (AFTER) : 1
 connection master;
 include/rpl_start_server.inc [server_number=1]
 # Master has restarted successfully
-set @@global.debug_dbug="-d";
 connection slave;
 include/stop_slave.inc
 include/start_slave.inc
diff --git a/mysql-test/suite/rpl/r/rpl_gtid_reconnect.result b/mysql-test/suite/rpl/r/rpl_gtid_reconnect.result
index d5037f8cf94..4f50d7c6d85 100644
--- a/mysql-test/suite/rpl/r/rpl_gtid_reconnect.result
+++ b/mysql-test/suite/rpl/r/rpl_gtid_reconnect.result
@@ -27,7 +27,7 @@ a
 connection server_1;
 include/kill_binlog_dump_threads.inc
 INSERT INTO t1 VALUES (10);
-SET @old_dbug= @@GLOBAL.debug_dbug;
+SET @old_debug= @@GLOBAL.debug_dbug;
 SET GLOBAL debug_dbug="+d,dummy_disable_default_dbug_output";
 SET GLOBAL debug_dbug="+d,gtid_force_reconnect_at_10_1_100";
 connection server_2;
diff --git a/mysql-test/suite/rpl/r/rpl_mariadb_slave_capability.result b/mysql-test/suite/rpl/r/rpl_mariadb_slave_capability.result
index b96153a226a..d384422f88a 100644
--- a/mysql-test/suite/rpl/r/rpl_mariadb_slave_capability.result
+++ b/mysql-test/suite/rpl/r/rpl_mariadb_slave_capability.result
@@ -2,10 +2,10 @@ include/master-slave.inc
 [connection master]
 connection master;
 set @old_master_binlog_checksum= @@global.binlog_checksum;
-set @old_slave_dbug= @@global.debug_dbug;
 connection slave;
 include/stop_slave.inc
 # Test slave with no capability gets dummy event, which is ignored.
+set @old_dbug= @@global.debug_dbug;
 SET @@global.debug_dbug='+d,simulate_slave_capability_none';
 include/start_slave.inc
 connection master;
@@ -50,7 +50,7 @@ slave-relay-bin.000005	#	Annotate_rows	#	#	INSERT INTO t1 /* A comment just to m
 slave-relay-bin.000005	#	Table_map	#	#	table_id: # (test.t1)
 slave-relay-bin.000005	#	Write_rows_v1	#	#	table_id: # flags: STMT_END_F
 slave-relay-bin.000005	#	Query	#	#	COMMIT
-set @@global.debug_dbug= @old_slave_dbug;
+set @@global.debug_dbug= @old_dbug;
 # Test dummy event is checksummed correctly.
 connection master;
 set @@global.binlog_checksum = CRC32;
@@ -148,10 +148,10 @@ select @@global.log_slave_updates;
 select @@global.replicate_annotate_row_events;
 @@global.replicate_annotate_row_events
 1
-set @@global.debug_dbug= @old_slave_dbug;
 Clean up.
 connection master;
 set @@global.binlog_checksum = @old_master_binlog_checksum;
 DROP TABLE t1, t2;
 connection slave;
+set @@global.debug_dbug= @old_dbug;
 include/rpl_end.inc
diff --git a/mysql-test/suite/rpl/r/rpl_parallel.result b/mysql-test/suite/rpl/r/rpl_parallel.result
index 9258deadaca..c5ae4d9984c 100644
--- a/mysql-test/suite/rpl/r/rpl_parallel.result
+++ b/mysql-test/suite/rpl/r/rpl_parallel.result
@@ -1512,7 +1512,7 @@ SET GLOBAL slave_parallel_threads=10;
 SET @old_dbug= @@GLOBAL.debug_dbug;
 SET GLOBAL debug_dbug= '+d,inject_analyze_table_sleep';
 connection server_1;
-SET @old_dbug= @@SESSION.debug_dbug;
+SET @old_dbug_slave= @@SESSION.debug_dbug;
 SET SESSION debug_dbug="+d,binlog_force_commit_id";
 SET @commit_id= 10000;
 ANALYZE TABLE t2;
@@ -1522,7 +1522,7 @@ test.t2	analyze	status	OK
 INSERT INTO t3 VALUES (120, 0);
 SET @commit_id= 10001;
 INSERT INTO t3 VALUES (121, 0);
-SET SESSION debug_dbug=@old_dbug;
+SET SESSION debug_dbug=@old_dbug_slave;
 SELECT * FROM t3 WHERE a >= 120 ORDER BY a;
 a	b
 120	0
@@ -1544,7 +1544,7 @@ include/stop_slave.inc
 SET @old_dbug= @@GLOBAL.debug_dbug;
 SET GLOBAL debug_dbug= '+d,inject_record_gtid_serverid_100_sleep';
 connection server_1;
-SET @old_dbug= @@SESSION.debug_dbug;
+SET @old_dbug_slave= @@SESSION.debug_dbug;
 SET SESSION debug_dbug="+d,binlog_force_commit_id";
 SET @old_server_id= @@SESSION.server_id;
 SET SESSION server_id= 100;
@@ -1554,7 +1554,7 @@ SET SESSION server_id= @old_server_id;
 INSERT INTO t3 VALUES (130, 0);
 SET @commit_id= 10011;
 INSERT INTO t3 VALUES (131, 0);
-SET SESSION debug_dbug=@old_dbug;
+SET SESSION debug_dbug=@old_dbug_slave;
 SELECT * FROM t3 WHERE a >= 130 ORDER BY a;
 a	b
 130	0
@@ -1580,7 +1580,7 @@ include/stop_slave.inc
 SET @old_dbug= @@GLOBAL.debug_dbug;
 SET GLOBAL debug_dbug= '+d,inject_mdev8031';
 connection server_1;
-SET @old_dbug= @@SESSION.debug_dbug;
+SET @old_dbug_slave= @@SESSION.debug_dbug;
 SET SESSION debug_dbug="+d,binlog_force_commit_id";
 SET @commit_id= 10200;
 INSERT INTO t3 VALUES (203, 1);
@@ -1601,7 +1601,7 @@ UPDATE t3 SET b=b+1 WHERE a=204;
 UPDATE t3 SET b=b+1 WHERE a=203;
 UPDATE t3 SET b=b+1 WHERE a=205;
 UPDATE t3 SET b=b+1 WHERE a=205;
-SET SESSION debug_dbug=@old_dbug;
+SET SESSION debug_dbug=@old_dbug_slave;
 SELECT * FROM t3 WHERE a>=200 ORDER BY a;
 a	b
 201	3
@@ -1631,11 +1631,11 @@ SET GLOBAL debug_dbug= '+d,inject_retry_event_group_open_binlog_kill';
 SET @old_max= @@GLOBAL.max_relay_log_size;
 SET GLOBAL max_relay_log_size= 4096;
 connection server_1;
-SET @old_dbug= @@SESSION.debug_dbug;
+SET @old_dbug_slave= @@SESSION.debug_dbug;
 SET SESSION debug_dbug="+d,binlog_force_commit_id";
 SET @commit_id= 10210;
 Omit long queries that cause relaylog rotations and transaction retries...
-SET SESSION debug_dbug=@old_dbug;
+SET SESSION debug_dbug=@old_dbug_slave;
 SELECT * FROM t3 WHERE a>=200 ORDER BY a;
 a	b
 201	6
@@ -1655,7 +1655,7 @@ a	b
 204	7
 205	5
 include/stop_slave.inc
-SET GLOBAL debug_dbug= @old_debg;
+SET GLOBAL debug_dbug= @old_dbug;
 SET GLOBAL max_relay_log_size= @old_max;
 include/start_slave.inc
 *** MDEV-8725: Assertion on ROLLBACK statement in the binary log ***
diff --git a/mysql-test/suite/rpl/r/rpl_parallel_ignored_errors.result b/mysql-test/suite/rpl/r/rpl_parallel_ignored_errors.result
index 570d2534ed7..3dd5a3ea83c 100644
--- a/mysql-test/suite/rpl/r/rpl_parallel_ignored_errors.result
+++ b/mysql-test/suite/rpl/r/rpl_parallel_ignored_errors.result
@@ -4,7 +4,7 @@ connection server_2;
 include/stop_slave.inc
 SET @old_parallel_threads=@@GLOBAL.slave_parallel_threads;
 SET @old_parallel_mode=@@GLOBAL.slave_parallel_mode;
-SET @old_dbug= @@GLOBAL.debug_dbug;
+SET @old_debug= @@GLOBAL.debug_dbug;
 SET GLOBAL slave_parallel_mode='optimistic';
 SET GLOBAL slave_parallel_threads= 3;
 CHANGE MASTER TO master_use_gtid=slave_pos;
diff --git a/mysql-test/suite/rpl/r/rpl_parallel_optimistic.result b/mysql-test/suite/rpl/r/rpl_parallel_optimistic.result
index bf7a8192f56..eff939512e2 100644
--- a/mysql-test/suite/rpl/r/rpl_parallel_optimistic.result
+++ b/mysql-test/suite/rpl/r/rpl_parallel_optimistic.result
@@ -359,7 +359,7 @@ include/save_master_gtid.inc
 connection server_2;
 include/sync_with_master_gtid.inc
 include/stop_slave.inc
-SET @old_dbug= @@GLOBAL.debug_dbug;
+SET @old_debug= @@GLOBAL.debug_dbug;
 SET GLOBAL debug_dbug= '+d,inject_analyze_table_sleep';
 connection server_1;
 ALTER TABLE t2 COMMENT "123abc";
diff --git a/mysql-test/suite/rpl/r/rpl_stm_stop_middle_group.result b/mysql-test/suite/rpl/r/rpl_stm_stop_middle_group.result
index f08f50f2467..b670a16bfcd 100644
--- a/mysql-test/suite/rpl/r/rpl_stm_stop_middle_group.result
+++ b/mysql-test/suite/rpl/r/rpl_stm_stop_middle_group.result
@@ -6,6 +6,7 @@ call mtr.add_suppression("Unsafe statement written to the binary log using state
 create table tm (a int auto_increment primary key) engine=myisam;
 create table ti (a int auto_increment primary key) engine=innodb;
 connection slave;
+SET @saved_dbug = @@GLOBAL.debug_dbug;
 set @@global.debug_dbug="+d,stop_slave_middle_group";
 connection master;
 begin;
@@ -74,7 +75,7 @@ two
 select max(a) as one from ti;
 one
 1
-set @@global.debug_dbug="-d";
+SET @@GLOBAL.debug_dbug = @saved_dbug;
 include/rpl_reset.inc
 connection master;
 drop table tm, ti;
diff --git a/mysql-test/suite/rpl/t/circular_serverid0.test b/mysql-test/suite/rpl/t/circular_serverid0.test
index 20ad58e2c52..097a2932404 100644
--- a/mysql-test/suite/rpl/t/circular_serverid0.test
+++ b/mysql-test/suite/rpl/t/circular_serverid0.test
@@ -22,10 +22,9 @@
 # The parameter reflects binlog-row-event-max-size @cnf.
 --let $row_size=1024
 
-SET @old_debug= @@global.debug;
-
 --connection M2
 STOP SLAVE;
+SET @old_debug= @@global.debug;
 SET GLOBAL debug_dbug= "+d,dbug.rows_events_to_delay_relay_logging";
 START SLAVE IO_THREAD;
 --source include/wait_for_slave_io_to_start.inc
diff --git a/mysql-test/suite/rpl/t/rpl_domain_id_filter_io_crash.test b/mysql-test/suite/rpl/t/rpl_domain_id_filter_io_crash.test
index 9088866d28b..f3ba39fb330 100644
--- a/mysql-test/suite/rpl/t/rpl_domain_id_filter_io_crash.test
+++ b/mysql-test/suite/rpl/t/rpl_domain_id_filter_io_crash.test
@@ -35,6 +35,7 @@ let $ignore_domain_ids_after= query_get_value(SHOW SLAVE STATUS, Replicate_Ignor
 --echo DO_DOMAIN_IDS (AFTER)     : $do_domain_ids_after
 --echo IGNORE_DOMAIN_IDS (AFTER) : $ignore_domain_ids_after
 
+SET @saved_dbug = @@GLOBAL.debug_dbug;
 SET @@global.debug_dbug="+d,kill_slave_io_before_commit";
 
 connection master;
@@ -379,5 +380,5 @@ connection slave;
 --source include/stop_slave.inc
 CHANGE MASTER TO DO_DOMAIN_IDS=(), IGNORE_DOMAIN_IDS=();
 --source include/start_slave.inc
-
+SET @@GLOBAL.debug_dbug = @saved_dbug;
 --source include/rpl_end.inc
diff --git a/mysql-test/suite/rpl/t/rpl_domain_id_filter_master_crash.test b/mysql-test/suite/rpl/t/rpl_domain_id_filter_master_crash.test
index 3619ede2c01..6dafab192a0 100644
--- a/mysql-test/suite/rpl/t/rpl_domain_id_filter_master_crash.test
+++ b/mysql-test/suite/rpl/t/rpl_domain_id_filter_master_crash.test
@@ -64,7 +64,6 @@ connection master;
 #--exec echo "restart" > $MYSQLTEST_VARDIR/tmp/mysqld.1.expect
 --source include/wait_until_connected_again.inc
 --echo # Master has restarted successfully
-set @@global.debug_dbug="-d";
 save_master_pos;
 
 --connection slave
diff --git a/mysql-test/suite/rpl/t/rpl_gtid_reconnect.test b/mysql-test/suite/rpl/t/rpl_gtid_reconnect.test
index 22cf10afba3..bc28ebddf5e 100644
--- a/mysql-test/suite/rpl/t/rpl_gtid_reconnect.test
+++ b/mysql-test/suite/rpl/t/rpl_gtid_reconnect.test
@@ -42,7 +42,7 @@ SELECT * FROM t1 ORDER BY a;
 # interfere with our DBUG error injection.
 --source include/kill_binlog_dump_threads.inc
 INSERT INTO t1 VALUES (10);
-SET @old_dbug= @@GLOBAL.debug_dbug;
+SET @old_debug= @@GLOBAL.debug_dbug;
 SET GLOBAL debug_dbug="+d,dummy_disable_default_dbug_output";
 SET GLOBAL debug_dbug="+d,gtid_force_reconnect_at_10_1_100";
 --save_master_pos
diff --git a/mysql-test/suite/rpl/t/rpl_mariadb_slave_capability.test b/mysql-test/suite/rpl/t/rpl_mariadb_slave_capability.test
index ed26e61d9b6..046a65f77db 100644
--- a/mysql-test/suite/rpl/t/rpl_mariadb_slave_capability.test
+++ b/mysql-test/suite/rpl/t/rpl_mariadb_slave_capability.test
@@ -5,9 +5,7 @@
 --source include/master-slave.inc
 
 connection master;
-
 set @old_master_binlog_checksum= @@global.binlog_checksum;
-set @old_slave_dbug= @@global.debug_dbug;
 
 # MDEV-4475: Cannot replicate to old server when binlog contains
 # empty Gtid_list event
@@ -16,6 +14,7 @@ set @old_slave_dbug= @@global.debug_dbug;
 connection slave;
 --source include/stop_slave.inc
 --echo # Test slave with no capability gets dummy event, which is ignored.
+set @old_dbug= @@global.debug_dbug;
 SET @@global.debug_dbug='+d,simulate_slave_capability_none';
 --source include/start_slave.inc
 
@@ -52,7 +51,7 @@ let $binlog_file= query_get_value(SHOW SLAVE STATUS, Relay_Log_File, 1);
 let $binlog_start= $relaylog_start;
 let $binlog_limit=0,10;
 --source include/show_relaylog_events.inc
-set @@global.debug_dbug= @old_slave_dbug;
+set @@global.debug_dbug= @old_dbug;
 
 --echo # Test dummy event is checksummed correctly.
 
@@ -150,11 +149,10 @@ let $binlog_limit=0,5;
 select @@global.log_slave_updates;
 select @@global.replicate_annotate_row_events;
 
-set @@global.debug_dbug= @old_slave_dbug;
-
 --echo Clean up.
 connection master;
 set @@global.binlog_checksum = @old_master_binlog_checksum;
 DROP TABLE t1, t2;
 sync_slave_with_master;
+set @@global.debug_dbug= @old_dbug;
 --source include/rpl_end.inc
diff --git a/mysql-test/suite/rpl/t/rpl_parallel_optimistic.test b/mysql-test/suite/rpl/t/rpl_parallel_optimistic.test
index 0060cf4416c..f5e48282326 100644
--- a/mysql-test/suite/rpl/t/rpl_parallel_optimistic.test
+++ b/mysql-test/suite/rpl/t/rpl_parallel_optimistic.test
@@ -334,7 +334,7 @@ INSERT INTO t2 VALUES (1,1), (2,1), (3,1), (4,1), (5,1);
 --connection server_2
 --source include/sync_with_master_gtid.inc
 --source include/stop_slave.inc
-SET @old_dbug= @@GLOBAL.debug_dbug;
+SET @old_debug= @@GLOBAL.debug_dbug;
 SET GLOBAL debug_dbug= '+d,inject_analyze_table_sleep';
 
 --connection server_1
diff --git a/mysql-test/suite/rpl/t/rpl_stm_lcase_tblnames.test b/mysql-test/suite/rpl/t/rpl_stm_lcase_tblnames.test
index 305c5b4b530..619b57994c2 100644
--- a/mysql-test/suite/rpl/t/rpl_stm_lcase_tblnames.test
+++ b/mysql-test/suite/rpl/t/rpl_stm_lcase_tblnames.test
@@ -3,10 +3,10 @@
 #  For details look into extra/rpl_tests/rpl_lower_case_table_names.test
 #
 
+-- source include/have_binlog_format_mixed_or_statement.inc
 -- source include/master-slave.inc
 -- source include/have_innodb.inc
 -- source include/not_windows.inc
--- source include/have_binlog_format_mixed_or_statement.inc
 
 -- let $engine=InnoDB
 -- source include/rpl_lower_case_table_names.test
diff --git a/mysql-test/suite/sys_vars/r/debug_dbug_func.result b/mysql-test/suite/sys_vars/r/debug_dbug_func.result
index 64b9c1a759b..d0c002cf111 100644
--- a/mysql-test/suite/sys_vars/r/debug_dbug_func.result
+++ b/mysql-test/suite/sys_vars/r/debug_dbug_func.result
@@ -1,55 +1,55 @@
-SET @old_debug = @@GLOBAL.debug;
+SET @old_debug = @@GLOBAL.debug_dbug;
 SET debug_dbug= 'T';
-select @@debug;
-@@debug
+select @@debug_dbug;
+@@debug_dbug
 T
 SET debug_dbug= '+P';
-select @@debug;
-@@debug
+select @@debug_dbug;
+@@debug_dbug
 P:T
 SET debug_dbug= '-P';
-select @@debug;
-@@debug
+select @@debug_dbug;
+@@debug_dbug
 T
-SELECT @@session.debug, @@global.debug;
-@@session.debug	@@global.debug
+SELECT @@session.debug_dbug, @@global.debug_dbug;
+@@session.debug_dbug	@@global.debug_dbug
 T	
 SET SESSION debug_dbug= '';
-SELECT @@session.debug, @@global.debug;
-@@session.debug	@@global.debug
+SELECT @@session.debug_dbug, @@global.debug_dbug;
+@@session.debug_dbug	@@global.debug_dbug
 	
 #
 # Bug #52629: memory leak from sys_var_thd_dbug in 
 #  binlog.binlog_write_error
 #
 SET GLOBAL debug_dbug='d,injecting_fault_writing';
-SELECT @@global.debug;
-@@global.debug
+SELECT @@global.debug_dbug;
+@@global.debug_dbug
 d,injecting_fault_writing
 SET GLOBAL debug_dbug='';
-SELECT @@global.debug;
-@@global.debug
+SELECT @@global.debug_dbug;
+@@global.debug_dbug
 
 SET GLOBAL debug_dbug=@old_debug;
 #
 # Bug #56709: Memory leaks at running the 5.1 test suite
 # 
-SET @old_local_debug = @@debug;
+SET @old_local_debug = @@debug_dbug;
 SET @@debug_dbug='d,foo';
-SELECT @@debug;
-@@debug
+SELECT @@debug_dbug;
+@@debug_dbug
 d,foo
 SET @@debug_dbug='';
-SELECT @@debug;
-@@debug
+SELECT @@debug_dbug;
+@@debug_dbug
 
 SET @@debug_dbug= @old_local_debug;
 End of 5.1 tests
 #
 # Bug#46165 server crash in dbug
 #
-SET @old_globaldebug = @@global.debug;
-SET @old_sessiondebug= @@session.debug;
+SET @old_globaldebug = @@global.debug_dbug;
+SET @old_sessiondebug= @@session.debug_dbug;
 # Test 1 - Bug test case, single connection
 SET GLOBAL  debug_dbug= '+O,MYSQL_TMP_DIR/bug46165.1.trace';
 SET SESSION debug_dbug= '-d:-t:-i';
diff --git a/mysql-test/suite/sys_vars/t/debug_dbug_func.test b/mysql-test/suite/sys_vars/t/debug_dbug_func.test
index 136a4c5504d..a72636131ee 100644
--- a/mysql-test/suite/sys_vars/t/debug_dbug_func.test
+++ b/mysql-test/suite/sys_vars/t/debug_dbug_func.test
@@ -1,27 +1,27 @@
 --source include/have_debug.inc
 
-SET @old_debug = @@GLOBAL.debug;
+SET @old_debug = @@GLOBAL.debug_dbug;
 
 #
-# Bug#34678 @@debug variable's incremental mode
+# Bug#34678 @@debug_dbug variable's incremental mode
 #
 
 SET debug_dbug= 'T';
-select @@debug;
+select @@debug_dbug;
 SET debug_dbug= '+P';
-select @@debug;
+select @@debug_dbug;
 SET debug_dbug= '-P';
-select @@debug;
+select @@debug_dbug;
 
 #
-# Bug#38054: "SET SESSION debug" modifies @@global.debug variable
+# Bug#38054: "SET SESSION debug" modifies @@global.debug_dbug variable
 #
 
-SELECT @@session.debug, @@global.debug;
+SELECT @@session.debug_dbug, @@global.debug_dbug;
 
 SET SESSION debug_dbug= '';
 
-SELECT @@session.debug, @@global.debug;
+SELECT @@session.debug_dbug, @@global.debug_dbug;
 
 --echo #
 --echo # Bug #52629: memory leak from sys_var_thd_dbug in 
@@ -29,9 +29,9 @@ SELECT @@session.debug, @@global.debug;
 --echo #
 
 SET GLOBAL debug_dbug='d,injecting_fault_writing';
-SELECT @@global.debug;
+SELECT @@global.debug_dbug;
 SET GLOBAL debug_dbug='';
-SELECT @@global.debug;
+SELECT @@global.debug_dbug;
 
 SET GLOBAL debug_dbug=@old_debug;
 
@@ -39,12 +39,12 @@ SET GLOBAL debug_dbug=@old_debug;
 --echo # Bug #56709: Memory leaks at running the 5.1 test suite
 --echo # 
 
-SET @old_local_debug = @@debug;
+SET @old_local_debug = @@debug_dbug;
 
 SET @@debug_dbug='d,foo';
-SELECT @@debug;
+SELECT @@debug_dbug;
 SET @@debug_dbug='';
-SELECT @@debug;
+SELECT @@debug_dbug;
 
 SET @@debug_dbug= @old_local_debug;
 
@@ -55,8 +55,8 @@ SET @@debug_dbug= @old_local_debug;
 --echo # Bug#46165 server crash in dbug
 --echo #
 
-SET @old_globaldebug = @@global.debug;
-SET @old_sessiondebug= @@session.debug;
+SET @old_globaldebug = @@global.debug_dbug;
+SET @old_sessiondebug= @@session.debug_dbug;
 
 --echo # Test 1 - Bug test case, single connection
 --replace_result $MYSQL_TMP_DIR MYSQL_TMP_DIR
diff --git a/plugin/auth_pam/CMakeLists.txt b/plugin/auth_pam/CMakeLists.txt
index e7a9d423b04..a556b870719 100644
--- a/plugin/auth_pam/CMakeLists.txt
+++ b/plugin/auth_pam/CMakeLists.txt
@@ -23,5 +23,12 @@ IF(HAVE_PAM_APPL_H)
   ENDIF()
   IF(TARGET auth_pam OR TARGET auth_pam_v1)
     ADD_SUBDIRECTORY(testing)
+    ADD_LIBRARY(pam_user_map MODULE mapper/pam_user_map.c)
+    TARGET_LINK_LIBRARIES(pam_user_map pam)
+    SET_TARGET_PROPERTIES (pam_user_map PROPERTIES PREFIX "")
+    IF(INSTALL_PAMDIR)
+      INSTALL(TARGETS pam_user_map DESTINATION ${INSTALL_PAMDIR} COMPONENT Server)
+      INSTALL(FILES mapper/user_map.conf DESTINATION /etc/security COMPONENT Server)
+    ENDIF()
   ENDIF()
 ENDIF(HAVE_PAM_APPL_H)
diff --git a/plugin/auth_pam/mapper/user_map.conf b/plugin/auth_pam/mapper/user_map.conf
new file mode 100644
index 00000000000..4af8fb0fe10
--- /dev/null
+++ b/plugin/auth_pam/mapper/user_map.conf
@@ -0,0 +1,13 @@
+#
+# Configuration file for pam_user_map.so
+#
+# defines mapping in the form
+#
+#       orig_user_name: mapped_user_name
+#
+# or (to map all users in a specific group)
+#
+#       @group_name: mapped_user_name
+#
+# comments and empty lines are ignored
+#
diff --git a/scripts/wsrep_sst_mariabackup.sh b/scripts/wsrep_sst_mariabackup.sh
index 8d1a36561d3..799276258f2 100644
--- a/scripts/wsrep_sst_mariabackup.sh
+++ b/scripts/wsrep_sst_mariabackup.sh
@@ -385,8 +385,8 @@ read_cnf()
 
 get_stream()
 {
-    if [[ $sfmt == 'xbstream' ]];then 
-        wsrep_log_info "Streaming with xbstream"
+    if [[ $sfmt == 'mbstream' || $sfmt == 'xbstream' ]];then
+        wsrep_log_info "Streaming with ${sfmt}"
         if [[ "$WSREP_SST_OPT_ROLE"  == "joiner" ]];then
             strmcmd="${XBSTREAM_BIN} -x"
         else
diff --git a/sql/item_timefunc.h b/sql/item_timefunc.h
index 8a69a0a3d5a..b3ecd1dfd4d 100644
--- a/sql/item_timefunc.h
+++ b/sql/item_timefunc.h
@@ -857,6 +857,10 @@ class Item_func_from_unixtime :public Item_datetimefunc
   const char *func_name() const { return "from_unixtime"; }
   bool fix_length_and_dec();
   bool get_date(THD *thd, MYSQL_TIME *res, date_mode_t fuzzydate);
+  bool check_vcol_func_processor(void *arg)
+  {
+    return mark_unsupported_function(func_name(), "()", arg, VCOL_SESSION_FUNC);
+  }
   Item *get_copy(THD *thd)
   { return get_item_copy<Item_func_from_unixtime>(thd, this); }
 };
diff --git a/sql/log_event.cc b/sql/log_event.cc
index 490842f55f5..852ffc1dada 100644
--- a/sql/log_event.cc
+++ b/sql/log_event.cc
@@ -7127,7 +7127,7 @@ int Load_log_event::copy_log_event(const char *buf, ulong event_len,
 {
   DBUG_ENTER("Load_log_event::copy_log_event");
   uint data_len;
-  if ((int) event_len < body_offset)
+  if ((int) event_len <= body_offset)
     DBUG_RETURN(1);
   char* buf_end = (char*)buf + event_len;
   /* this is the beginning of the post-header */
@@ -10917,6 +10917,12 @@ Rows_log_event::Rows_log_event(const char *buf, uint event_len,
 
   uint8 const post_header_len= description_event->post_header_len[event_type-1];
 
+  if (event_len < (uint)(common_header_len + post_header_len))
+  {
+    m_cols.bitmap= 0;
+    DBUG_VOID_RETURN;
+  }
+
   DBUG_PRINT("enter",("event_len: %u  common_header_len: %d  "
 		      "post_header_len: %d",
 		      event_len, common_header_len,
@@ -12648,6 +12654,7 @@ Table_map_log_event::Table_map_log_event(const char *buf, uint event_len,
   const char *post_start= buf + common_header_len;
 
   post_start+= TM_MAPID_OFFSET;
+  VALIDATE_BYTES_READ(post_start, buf, event_len);
   if (post_header_len == 6)
   {
     /* Master is of an intermediate source tree before 5.1.4. Id is 4 bytes */
diff --git a/sql/log_event.h b/sql/log_event.h
index df058469225..dbd2f4ab348 100644
--- a/sql/log_event.h
+++ b/sql/log_event.h
@@ -2223,7 +2223,15 @@ public:
  ****************************************************************************/
 struct sql_ex_info
 {
-  sql_ex_info() {}                            /* Remove gcc warning */
+  sql_ex_info():
+    cached_new_format(-1),
+    field_term_len(0),
+    enclosed_len(0),
+    line_term_len(0),
+    line_start_len(0),
+    escaped_len(0),
+    empty_flags(0)
+  {}                            /* Remove gcc warning */
   const char* field_term;
   const char* enclosed;
   const char* line_term;
diff --git a/storage/innobase/page/page0zip.cc b/storage/innobase/page/page0zip.cc
index 10697528e25..f3caea4b2df 100644
--- a/storage/innobase/page/page0zip.cc
+++ b/storage/innobase/page/page0zip.cc
@@ -2,7 +2,7 @@
 
 Copyright (c) 2005, 2016, Oracle and/or its affiliates. All Rights Reserved.
 Copyright (c) 2012, Facebook Inc.
-Copyright (c) 2014, 2019, MariaDB Corporation.
+Copyright (c) 2014, 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
@@ -3290,7 +3290,19 @@ page_zip_validate_low(
 		   FIL_PAGE_LSN - FIL_PAGE_PREV)
 	    || memcmp(page_zip->data + FIL_PAGE_TYPE, page + FIL_PAGE_TYPE, 2)
 	    || memcmp(page_zip->data + FIL_PAGE_DATA, page + FIL_PAGE_DATA,
-		      PAGE_DATA - FIL_PAGE_DATA)) {
+		      PAGE_ROOT_AUTO_INC)
+	    /* The PAGE_ROOT_AUTO_INC can be updated while holding an SX-latch
+	    on the clustered index root page (page number 3 in .ibd files).
+	    That allows concurrent readers (holding buf_block_t::lock S-latch).
+	    Because we do not know what type of a latch our caller is holding,
+	    we will ignore the field on clustered index root pages in order
+	    to avoid false positives. */
+	    || (page_get_page_no(page) != 3/* clustered index root page */
+		&& memcmp(&page_zip->data[FIL_PAGE_DATA + PAGE_ROOT_AUTO_INC],
+			  &page[FIL_PAGE_DATA + PAGE_ROOT_AUTO_INC], 8))
+	    || memcmp(&page_zip->data[FIL_PAGE_DATA + PAGE_HEADER_PRIV_END],
+		      &page[FIL_PAGE_DATA + PAGE_HEADER_PRIV_END],
+		      PAGE_DATA - FIL_PAGE_DATA - PAGE_HEADER_PRIV_END)) {
 		page_zip_fail(("page_zip_validate: page header\n"));
 		page_zip_hexdump(page_zip, sizeof *page_zip);
 		page_zip_hexdump(page_zip->data, page_zip_get_size(page_zip));
diff --git a/storage/maria/maria_pack.c b/storage/maria/maria_pack.c
index 9ae982a6bd7..3e9d002ea43 100644
--- a/storage/maria/maria_pack.c
+++ b/storage/maria/maria_pack.c
@@ -782,27 +782,29 @@ static HUFF_COUNTS *init_huff_count(MARIA_HA *info,my_off_t records)
     for (i=0 ; i < info->s->base.fields ; i++)
     {
       enum en_fieldtype type;
-      count[i].field_length=info->s->columndef[i].length;
-      type= count[i].field_type= (enum en_fieldtype) info->s->columndef[i].type;
+      uint col_nr = info->s->columndef[i].column_nr;
+      count[col_nr].field_length=info->s->columndef[i].length;
+      type= count[col_nr].field_type=
+        (enum en_fieldtype) info->s->columndef[i].type;
       if (type == FIELD_INTERVALL ||
 	  type == FIELD_CONSTANT ||
 	  type == FIELD_ZERO)
 	type = FIELD_NORMAL;
-      if (count[i].field_length <= 8 &&
+      if (count[col_nr].field_length <= 8 &&
 	  (type == FIELD_NORMAL ||
 	   type == FIELD_SKIP_ZERO))
-	count[i].max_zero_fill= count[i].field_length;
+	count[col_nr].max_zero_fill= count[col_nr].field_length;
       /*
         For every column initialize a tree, which is used to detect distinct
         column values. 'int_tree' works together with 'tree_buff' and
         'tree_pos'. It's keys are implemented by pointers into 'tree_buff'.
         This is accomplished by '-1' as the element size.
       */
-      init_tree(&count[i].int_tree,0,0,-1,(qsort_cmp2) compare_tree, NULL,
+      init_tree(&count[col_nr].int_tree,0,0,-1,(qsort_cmp2) compare_tree, NULL,
 		NULL, MYF(0));
       if (records && type != FIELD_BLOB && type != FIELD_VARCHAR)
-	count[i].tree_pos=count[i].tree_buff =
-	  my_malloc(count[i].field_length > 1 ? tree_buff_length : 2,
+	count[col_nr].tree_pos=count[col_nr].tree_buff =
+	  my_malloc(count[col_nr].field_length > 1 ? tree_buff_length : 2,
 		    MYF(MY_WME));
     }
   }
diff --git a/storage/tokudb/PerconaFT/DartConfig.cmake b/storage/tokudb/PerconaFT/DartConfig.cmake
deleted file mode 100644
index 9ad189869c6..00000000000
--- a/storage/tokudb/PerconaFT/DartConfig.cmake
+++ /dev/null
@@ -1,10 +0,0 @@
-if(BUILD_TESTING)
-  if (NOT CMAKE_SYSTEM_NAME STREQUAL Darwin)
-    # Valgrind on OSX 10.8 generally works but outputs some warning junk
-    # that is hard to parse out, so we'll just let it run alone
-    set(MEMORYCHECK_COMMAND "${TokuDB_SOURCE_DIR}/scripts/tokuvalgrind")
-  endif ()
-  set(MEMORYCHECK_COMMAND_OPTIONS "--gen-suppressions=no --soname-synonyms=somalloc=*tokuportability* --quiet --num-callers=20 --leak-check=full --show-reachable=yes --trace-children=yes --trace-children-skip=sh,*/sh,basename,*/basename,dirname,*/dirname,rm,*/rm,cp,*/cp,mv,*/mv,cat,*/cat,diff,*/diff,grep,*/grep,date,*/date,test,*/tokudb_dump,*/tdb-recover --trace-children-skip-by-arg=--only_create,--test,--no-shutdown,novalgrind" CACHE INTERNAL "options for valgrind")
-  set(MEMORYCHECK_SUPPRESSIONS_FILE "${CMAKE_CURRENT_BINARY_DIR}/valgrind.suppressions" CACHE INTERNAL "suppressions file for valgrind")
-  set(UPDATE_COMMAND "svn")
-endif()
diff --git a/storage/tokudb/PerconaFT/scripts/tokuvalgrind b/storage/tokudb/PerconaFT/scripts/tokuvalgrind
deleted file mode 120000
index 74517aa2975..00000000000
--- a/storage/tokudb/PerconaFT/scripts/tokuvalgrind
+++ /dev/null
@@ -1 +0,0 @@
-tokugrind
\ No newline at end of file