Merge 10.4 into 10.5

27 files changed, 321 insertions, 166 deletions

diff --git a/extra/mariabackup/innobackupex.cc b/extra/mariabackup/innobackupex.cc
index 319399b97c5..9e95d2e6b16 100644
--- a/extra/mariabackup/innobackupex.cc
+++ b/extra/mariabackup/innobackupex.cc
@@ -112,6 +112,8 @@ bool ibx_partial_backup = false;
 char *ibx_position_arg = NULL;
 char *ibx_backup_directory = NULL;
 
+extern bool xb_opt_destroy_password;
+
 /* copy of proxied xtrabackup options */
 my_bool ibx_xb_close_files;
 const char *ibx_xtrabackup_compress_alg;
@@ -770,18 +772,7 @@ ibx_get_one_option(const struct my_option *opt,
 		xtrabackup_compress = TRUE;
 		break;
 	case 'p':
-		if (argument)
-		{
-		        char *start = argument;
-			my_free(opt_ibx_password);
-			opt_ibx_password= my_strdup(PSI_NOT_INSTRUMENTED,
-                                                    argument, MYF(MY_FAE));
-			/*  Destroy argument */
-			while (*argument)
-				*argument++= 'x';
-			if (*start)
-				start[1]=0 ;
-		}
+    opt_ibx_password= argument;
 		break;
         }
 	return(0);
diff --git a/extra/mariabackup/xtrabackup.cc b/extra/mariabackup/xtrabackup.cc
index d50832405a3..bd2519ae7c0 100644
--- a/extra/mariabackup/xtrabackup.cc
+++ b/extra/mariabackup/xtrabackup.cc
@@ -118,6 +118,7 @@ my_bool xtrabackup_copy_back;
 my_bool xtrabackup_move_back;
 my_bool xtrabackup_decrypt_decompress;
 my_bool xtrabackup_print_param;
+my_bool xtrabackup_mysqld_args;
 
 my_bool xtrabackup_export;
 
@@ -797,7 +798,8 @@ enum options_xtrabackup
   OPT_LOCK_DDL_PER_TABLE,
   OPT_ROCKSDB_DATADIR,
   OPT_BACKUP_ROCKSDB,
-  OPT_XTRA_CHECK_PRIVILEGES
+  OPT_XTRA_CHECK_PRIVILEGES,
+  OPT_XTRA_MYSQLD_ARGS
 };
 
 struct my_option xb_client_options[]= {
@@ -1191,7 +1193,6 @@ struct my_option xb_client_options[]= {
 #define MYSQL_CLIENT
 #include "sslopt-longopts.h"
 #undef MYSQL_CLIENT
-
     {0, 0, 0, 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}};
 
 uint xb_client_options_count = array_elements(xb_client_options);
@@ -1407,6 +1408,13 @@ struct my_option xb_server_options[] =
    &opt_check_privileges, &opt_check_privileges,
    0, GET_BOOL, NO_ARG, 1, 0, 0, 0, 0, 0 },
 
+    {"mysqld-args", OPT_XTRA_MYSQLD_ARGS,
+     "All arguments that follow this argument are considered as server "
+     "options, and if some of them are not supported by mariabackup, they "
+     "will be ignored.",
+     (G_PTR *) &xtrabackup_mysqld_args, (G_PTR *) &xtrabackup_mysqld_args, 0,
+     GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
+
   { 0, 0, 0, 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}
 };
 
@@ -1574,24 +1582,11 @@ end:
   return err;
 }
 
+static const char *xb_client_default_groups[]= {
+    "client", "client-server", "client-mariadb", 0, 0, 0};
 
-static const char *xb_client_default_groups[]={
-   "xtrabackup", "mariabackup",
-   "client", "client-server",
-   "client-mariadb",
-   0, 0, 0
-};
-
-static const char *xb_server_default_groups[]={
-   "xtrabackup", "mariabackup",
-   "mysqld", "server", MYSQL_BASE_VERSION,
-   "mariadb", MARIADB_BASE_VERSION,
-   "client-server",
-   #ifdef WITH_WSREP
-   "galera",
-   #endif
-   0, 0, 0
-};
+static const char *backup_default_groups[]= {
+    "xtrabackup", "mariabackup", "mariadb-backup", 0, 0, 0};
 
 static void print_version(void)
 {
@@ -1619,7 +1614,7 @@ GNU General Public License for more details.\n\
 You can download full text of the license on http://www.gnu.org/licenses/gpl-2.0.txt\n");
 
   printf("Usage: %s [--defaults-file=#] [--backup | --prepare | --copy-back | --move-back] [OPTIONS]\n",my_progname);
-  print_defaults("my", xb_server_default_groups);
+  print_defaults("my", load_default_groups);
   my_print_help(xb_client_options);
   my_print_help(xb_server_options);
   my_print_variables(xb_server_options);
@@ -1754,15 +1749,7 @@ xb_get_one_option(const struct my_option *opt,
     }
     break;
   case 'p':
-    if (argument)
-    {
-      char *start= argument;
-      my_free(opt_password);
-      opt_password= my_strdup(PSI_NOT_INSTRUMENTED, argument, MYF(MY_FAE));
-      while (*argument) *argument++= 'x';               // Destroy argument
-      if (*start)
-        start[1]=0 ;
-    }
+    opt_password = argument;
     break;
   case OPT_PROTOCOL:
     if (argument)
@@ -5801,11 +5788,23 @@ void setup_error_messages()
 	  die("could not initialize error messages");
 }
 
-void
-handle_options(int argc, char **argv, char ***argv_client, char ***argv_server)
+/** Handle mariabackup options. The options are handled with the following
+order:
+
+1) Load server groups and process server options, ignore unknown options
+2) Load client groups and process client options, ignore unknown options
+3) Load backup groups and process client-server options, exit on unknown option
+4) Process --mysqld-args options, ignore unknown options
+
+@param[in] argc arguments count
+@param[in] argv arguments array
+@param[out] argv_server server options including loaded from server groups
+@param[out] argv_client client options including loaded from client groups
+@param[out] argv_backup backup options including loaded from backup groups */
+void handle_options(int argc, char **argv, char ***argv_server,
+                    char ***argv_client, char ***argv_backup)
 {
 	/* Setup some variables for Innodb.*/
-
 	srv_operation = SRV_OPERATION_RESTORE;
 
 	files_charset_info = &my_charset_utf8mb3_general_ci;
@@ -5832,49 +5831,64 @@ handle_options(int argc, char **argv, char ***argv_client, char ***argv_server)
 	bool	prepare = false;
 
 	char	conf_file[FN_REFLEN];
-	int	argc_client = argc;
-	int	argc_server = argc;
 
-	/* scan options for group and config file to load defaults from */
-	for (i = 1; i < argc; i++) {
+        // array_elements() will not work for load_defaults, as it is defined
+        // as external symbol, so let's use dynamic array to have ability to
+        // add new server default groups
+        std::vector<const char *> server_default_groups;
 
-		char *optend = strcend(argv[i], '=');
+        for (const char **default_group= load_default_groups; *default_group;
+             ++default_group)
+          server_default_groups.push_back(*default_group);
 
-		if (strncmp(argv[i], "--defaults-group",
-			    optend - argv[i]) == 0) {
-			defaults_group = optend + 1;
-			append_defaults_group(defaults_group,
-				xb_server_default_groups,
-				array_elements(xb_server_default_groups));
-		}
+        std::vector<char *> mysqld_args;
+        std::vector<char *> mariabackup_args;
+        mysqld_args.push_back(argv[0]);
+        mariabackup_args.push_back(argv[0]);
 
-		if (strncmp(argv[i], "--login-path",
-			    optend - argv[i]) == 0) {
-			append_defaults_group(optend + 1,
-				xb_client_default_groups,
-				array_elements(xb_client_default_groups));
-		}
-
-		if (!strncmp(argv[i], "--prepare",
-			     optend - argv[i])) {
-			prepare = true;
-		}
-
-		if (!strncmp(argv[i], "--apply-log",
-			     optend - argv[i])) {
-			prepare = true;
-		}
-
-		if (!strncmp(argv[i], "--target-dir",
-			     optend - argv[i]) && *optend) {
-			target_dir = optend + 1;
-		}
-
-		if (!*optend && argv[i][0] != '-') {
-			target_dir = argv[i];
-		}
-	}
+        /* scan options for group and config file to load defaults from */
+        for (i= 1; i < argc; i++)
+        {
+          char *optend= strcend(argv[i], '=');
+          if (mysqld_args.size() > 1 ||
+              strncmp(argv[i], "--mysqld-args", optend - argv[i]) == 0)
+          {
+            mysqld_args.push_back(argv[i]);
+            continue;
+          }
+          else
+            mariabackup_args.push_back(argv[i]);
+
+          if (strncmp(argv[i], "--defaults-group", optend - argv[i]) == 0)
+          {
+            defaults_group= optend + 1;
+            server_default_groups.push_back(defaults_group);
+          }
+          else if (strncmp(argv[i], "--login-path", optend - argv[i]) == 0)
+          {
+            append_defaults_group(optend + 1, xb_client_default_groups,
+                                  array_elements(xb_client_default_groups));
+          }
+          else if (!strncmp(argv[i], "--prepare", optend - argv[i]))
+          {
+            prepare= true;
+          }
+          else if (!strncmp(argv[i], "--apply-log", optend - argv[i]))
+          {
+            prepare= true;
+          }
+          else if (!strncmp(argv[i], "--target-dir", optend - argv[i]) &&
+                   *optend)
+          {
+            target_dir= optend + 1;
+          }
+          else if (!*optend && argv[i][0] != '-')
+          {
+            target_dir= argv[i];
+          }
+        }
 
+        server_default_groups.push_back(NULL);
 	snprintf(conf_file, sizeof(conf_file), "my");
 
 	if (prepare && target_dir) {
@@ -5890,10 +5904,16 @@ handle_options(int argc, char **argv, char ***argv_client, char ***argv_server)
 			}
 	}
 
-	*argv_client = argv;
-	*argv_server = argv;
-	load_defaults_or_exit(conf_file, xb_server_default_groups,
-			      &argc_server, argv_server);
+        *argv_client= *argv_server= *argv_backup= &mariabackup_args[0];
+        int argc_backup= static_cast<int>(mariabackup_args.size());
+        int argc_client= argc_backup;
+        int argc_server= argc_backup;
+
+        /* 1) Load server groups and process server options, ignore unknown
+         options */
+
+        load_defaults_or_exit(conf_file, &server_default_groups[0],
+                              &argc_server, argv_server);
 
 	int n;
 	for (n = 0; (*argv_server)[n]; n++) {};
@@ -5913,7 +5933,6 @@ handle_options(int argc, char **argv, char ***argv_client, char ***argv_server)
 		optp->u_max_value = (G_PTR *) &global_max_value;
 	}
 
-
 	/* Throw a descriptive error if --defaults-file or --defaults-extra-file
 	is not the first command line argument */
 	for (int i = 2 ; i < argc ; i++) {
@@ -5935,6 +5954,9 @@ handle_options(int argc, char **argv, char ***argv_client, char ***argv_server)
 					xb_server_options, xb_get_one_option)))
 		exit(ho_error);
 
+        /* 2) Load client groups and process client options, ignore unknown
+         options */
+
 	load_defaults_or_exit(conf_file, xb_client_default_groups,
 			      &argc_client, argv_client);
 
@@ -5942,8 +5964,6 @@ handle_options(int argc, char **argv, char ***argv_client, char ***argv_server)
  	argc_client = n;
 
 	if (innobackupex_mode && argc_client > 0) {
-		/* emulate innobackupex script */
-		innobackupex_mode = true;
 		if (!ibx_handle_options(&argc_client, argv_client)) {
 			exit(EXIT_FAILURE);
 		}
@@ -5954,18 +5974,76 @@ handle_options(int argc, char **argv, char ***argv_client, char ***argv_server)
 					xb_client_options, xb_get_one_option)))
 		exit(ho_error);
 
+        /* 3) Load backup groups and process client-server options, exit on
+         unknown option */
+
+        load_defaults_or_exit(conf_file, backup_default_groups, &argc_backup,
+                              argv_backup);
+        for (n= 0; (*argv_backup)[n]; n++)
+        {
+        };
+        argc_backup= n;
+
+        my_handle_options_init_variables = FALSE;
+
+        if (argc_backup > 0 &&
+            (ho_error= handle_options(&argc_backup, argv_backup,
+                                      xb_server_options, xb_get_one_option)))
+          exit(ho_error);
+
+        /* Add back the program name handle_options removes */
+        ++argc_backup;
+        --(*argv_backup);
+
+        if (innobackupex_mode && argc_backup > 0 &&
+            !ibx_handle_options(&argc_backup, argv_backup))
+          exit(EXIT_FAILURE);
+
+        my_getopt_skip_unknown = FALSE;
+
+        if (argc_backup > 0 &&
+            (ho_error= handle_options(&argc_backup, argv_backup,
+                                      xb_client_options, xb_get_one_option)))
+          exit(ho_error);
+
+        if (opt_password)
+        {
+          char *argument= opt_password;
+          char *start= argument;
+          opt_password= my_strdup(PSI_NOT_INSTRUMENTED, opt_password, MYF(MY_FAE));
+          while (*argument)
+            *argument++= 'x'; // Destroy argument
+          if (*start)
+            start[1]= 0;
+        }
+
+        /* 4) Process --mysqld-args options, ignore unknown options */
+
+        my_getopt_skip_unknown = TRUE;
+
+        int argc_mysqld = static_cast<int>(mysqld_args.size());
+        if (argc_mysqld > 1)
+        {
+          char **argv_mysqld= &mysqld_args[0];
+          if ((ho_error= handle_options(&argc_mysqld, &argv_mysqld,
+                                        xb_server_options, xb_get_one_option)))
+            exit(ho_error);
+        }
+
+        my_handle_options_init_variables = TRUE;
+
 	/* Reject command line arguments that don't look like options, i.e. are
 	not of the form '-X' (single-character options) or '--option' (long
 	options) */
-	for (int i = 0 ; i < argc_client ; i++) {
-		const char * const opt = (*argv_client)[i];
+	for (int i = 0 ; i < argc_backup ; i++) {
+		const char * const opt = (*argv_backup)[i];
 
 		if (strncmp(opt, "--", 2) &&
 		    !(strlen(opt) == 2 && opt[0] == '-')) {
 			bool server_option = true;
 
-			for (int j = 0; j < argc_server; j++) {
-				if (opt == (*argv_server)[j]) {
+			for (int j = 0; j < argc_backup; j++) {
+				if (opt == (*argv_backup)[j]) {
 					server_option = false;
 					break;
 				}
@@ -5986,7 +6064,9 @@ static int get_exepath(char *buf, size_t size, const char *argv0);
 /* ================= main =================== */
 int main(int argc, char **argv)
 {
-	char **client_defaults, **server_defaults;
+  char **server_defaults;
+  char **client_defaults;
+  char **backup_defaults;
 
 	if (get_exepath(mariabackup_exe,FN_REFLEN, argv[0]))
     strncpy(mariabackup_exe,argv[0], FN_REFLEN-1);
@@ -6037,7 +6117,8 @@ int main(int argc, char **argv)
 	mysql_mutex_init(key_LOCK_error_log, &LOCK_error_log,
 			 MY_MUTEX_INIT_FAST);
 
-	handle_options(argc, argv, &client_defaults, &server_defaults);
+        handle_options(argc, argv, &server_defaults, &client_defaults,
+                       &backup_defaults);
 
 #ifndef DBUG_OFF
 	if (dbug_option) {
@@ -6057,8 +6138,9 @@ int main(int argc, char **argv)
 		ibx_cleanup();
 	}
 
-	free_defaults(client_defaults);
 	free_defaults(server_defaults);
+        free_defaults(client_defaults);
+        free_defaults(backup_defaults);
 
 #ifndef DBUG_OFF
 	if (dbug_option) {
diff --git a/include/my_getopt.h b/include/my_getopt.h
index a299c315785..642fb344d92 100644
--- a/include/my_getopt.h
+++ b/include/my_getopt.h
@@ -106,6 +106,7 @@ extern char *autoset_my_option;
 extern my_bool my_getopt_print_errors;
 extern my_bool my_getopt_skip_unknown;
 extern my_bool my_getopt_prefix_matching;
+extern my_bool my_handle_options_init_variables;
 extern my_error_reporter my_getopt_error_reporter;
 extern my_getopt_value my_getopt_get_addr;
 
diff --git a/include/violite.h b/include/violite.h
index 4c2eef64a1b..59fac20c376 100644
--- a/include/violite.h
+++ b/include/violite.h
@@ -174,6 +174,8 @@ struct st_VioSSLFd
 int sslaccept(struct st_VioSSLFd*, Vio *, long timeout, unsigned long *errptr);
 int sslconnect(struct st_VioSSLFd*, Vio *, long timeout, unsigned long *errptr);
 
+void vio_check_ssl_init();
+
 struct st_VioSSLFd
 *new_VioSSLConnectorFd(const char *key_file, const char *cert_file,
 		       const char *ca_file,  const char *ca_path,
diff --git a/mysql-test/main/mdev_22370.result b/mysql-test/main/mdev_22370.result
new file mode 100644
index 00000000000..c1cb60aa106
--- /dev/null
+++ b/mysql-test/main/mdev_22370.result
@@ -0,0 +1,5 @@
+connect  con1,localhost,root,,;
+SET DEBUG_DBUG='+d,mark_busy_mdev_22370';
+FLUSH TABLES WITH READ LOCK;
+connection default;
+# restart
diff --git a/mysql-test/main/mdev_22370.test b/mysql-test/main/mdev_22370.test
new file mode 100644
index 00000000000..86bc527ebc0
--- /dev/null
+++ b/mysql-test/main/mdev_22370.test
@@ -0,0 +1,17 @@
+#
+# MDEV-22370 safe_mutex: Trying to lock uninitialized mutex at
+#   /data/src/10.4-bug/sql/rpl_parallel.cc, line 470 upon shutdown during FTWRL
+#
+# Purpose of this test case to test crash while FTWRL and shutdown is in race
+# condition
+# Shutdown can execute first and destroy the mutex making mutex_lock in pool_mark_busy
+# to crash
+
+--source include/have_debug.inc
+--connect (con1,localhost,root,,)
+SET DEBUG_DBUG='+d,mark_busy_mdev_22370';
+--send
+  FLUSH TABLES WITH READ LOCK;
+
+--connection default
+--source include/restart_mysqld.inc
diff --git a/mysql-test/suite/mariabackup/apply-log-only-incr.test b/mysql-test/suite/mariabackup/apply-log-only-incr.test
index 74ab680d840..c2d23c88a3e 100644
--- a/mysql-test/suite/mariabackup/apply-log-only-incr.test
+++ b/mysql-test/suite/mariabackup/apply-log-only-incr.test
@@ -36,7 +36,7 @@ connection default;
 
 --disable_result_log
 exec $XTRABACKUP --defaults-file=$MYSQLTEST_VARDIR/my.cnf  --backup --ftwrl-wait-timeout=5 --ftwrl-wait-threshold=300 --ftwrl-wait-query-type=all --target-dir=$incremental_dir --incremental-basedir=$basedir ;
-exec $XTRABACKUP --prepare --verbose --apply-log-only --target-dir=$basedir ;
+exec $XTRABACKUP --prepare --verbose --target-dir=$basedir ;
 --enable_result_log
 
 let SEARCH_FILE=$MYSQLTEST_VARDIR/log/current_test;
@@ -44,7 +44,7 @@ let SEARCH_FILE=$MYSQLTEST_VARDIR/log/current_test;
 --source include/search_pattern_in_file.inc
 --echo # expect NOT FOUND
 
-exec $XTRABACKUP --prepare --verbose --apply-log-only --target-dir=$basedir --incremental-dir=$incremental_dir ;
+exec $XTRABACKUP --prepare --verbose --target-dir=$basedir --incremental-dir=$incremental_dir ;
 
 --source include/search_pattern_in_file.inc
 --echo # expect NOT FOUND
diff --git a/mysql-test/suite/mariabackup/apply-log-only.test b/mysql-test/suite/mariabackup/apply-log-only.test
index 5a3c45f2914..7ffed0719f0 100644
--- a/mysql-test/suite/mariabackup/apply-log-only.test
+++ b/mysql-test/suite/mariabackup/apply-log-only.test
@@ -11,7 +11,7 @@ INSERT INTO t VALUES(1);
 exec $XTRABACKUP --defaults-file=$MYSQLTEST_VARDIR/my.cnf  --backup --target-dir=$basedir;
 --enable_result_log
 
-exec $XTRABACKUP --prepare --apply-log-only --target-dir=$basedir ;
+exec $XTRABACKUP --prepare --target-dir=$basedir ;
 
 let SEARCH_FILE=$MYSQLTEST_VARDIR/log/current_test;
 --let SEARCH_PATTERN= Rolled back recovered transaction
diff --git a/mysql-test/suite/mariabackup/binlog.test b/mysql-test/suite/mariabackup/binlog.test
index 998397bb495..b2f08c2d7bb 100644
--- a/mysql-test/suite/mariabackup/binlog.test
+++ b/mysql-test/suite/mariabackup/binlog.test
@@ -12,7 +12,7 @@ SHOW VARIABLES like 'log_bin';
 exec $XTRABACKUP --defaults-file=$MYSQLTEST_VARDIR/my.cnf  --backup --target-dir=$basedir;
 --enable_result_log
 
-exec $XTRABACKUP --prepare --binlog-info=1 --apply-log-only --target-dir=$basedir ;
+exec $XTRABACKUP --prepare --binlog-info=1 --target-dir=$basedir ;
 
 let SEARCH_FILE=$MYSQLTEST_VARDIR/log/current_test;
 --let SEARCH_PATTERN= Last binlog file .*, position .*
diff --git a/mysql-test/suite/mariabackup/incremental_ddl_before_backup.test b/mysql-test/suite/mariabackup/incremental_ddl_before_backup.test
index 2136771b97e..f243ac1acd9 100644
--- a/mysql-test/suite/mariabackup/incremental_ddl_before_backup.test
+++ b/mysql-test/suite/mariabackup/incremental_ddl_before_backup.test
@@ -33,7 +33,7 @@ select count(*) from t7;
 exec $XTRABACKUP --defaults-file=$MYSQLTEST_VARDIR/my.cnf  --backup --target-dir=$incremental_dir --incremental-basedir=$basedir;
 
 --echo # XTRABACKUP PREPARE
-exec $XTRABACKUP --apply-log-only --prepare --target-dir=$basedir;
+exec $XTRABACKUP --prepare --target-dir=$basedir;
 
 --echo # XTRABACKUP INCREMENTAL PREPARE
 exec $XTRABACKUP --prepare --target-dir=$basedir --incremental-dir=$incremental_dir;
diff --git a/mysql-test/suite/mariabackup/incremental_ddl_during_backup.test b/mysql-test/suite/mariabackup/incremental_ddl_during_backup.test
index 60780b13920..fdae90132cc 100644
--- a/mysql-test/suite/mariabackup/incremental_ddl_during_backup.test
+++ b/mysql-test/suite/mariabackup/incremental_ddl_during_backup.test
@@ -25,7 +25,7 @@ exec $XTRABACKUP --defaults-file=$MYSQLTEST_VARDIR/my.cnf  --backup --target-dir
 --let after_load_tablespaces=
 --disable_result_log
 echo # Prepare full backup, apply incremental one;
-exec $XTRABACKUP --apply-log-only --prepare --target-dir=$basedir;
+exec $XTRABACKUP --prepare --target-dir=$basedir;
 exec $XTRABACKUP --prepare --target-dir=$basedir --incremental-dir=$incremental_dir ;
 
 echo # Restore and check results;
diff --git a/mysql-test/suite/mariabackup/mdev-14447.test b/mysql-test/suite/mariabackup/mdev-14447.test
index 17f78b4d1c9..7877a7805e1 100644
--- a/mysql-test/suite/mariabackup/mdev-14447.test
+++ b/mysql-test/suite/mariabackup/mdev-14447.test
@@ -30,9 +30,9 @@ remove_file $backuplog;
 
 --disable_result_log
 echo # Prepare full backup, apply incremental one;
-exec $XTRABACKUP --prepare --verbose --apply-log-only --target-dir=$basedir;
+exec $XTRABACKUP --prepare --verbose --target-dir=$basedir;
 
-exec $XTRABACKUP --prepare --verbose --apply-log-only --target-dir=$basedir --incremental-dir=$incremental_dir ;
+exec $XTRABACKUP --prepare --verbose --target-dir=$basedir --incremental-dir=$incremental_dir ;
 
 echo # Restore and check results;
 let $targetdir=$basedir;
diff --git a/mysql-test/suite/mariabackup/options_check.result b/mysql-test/suite/mariabackup/options_check.result
new file mode 100644
index 00000000000..6b9925a0a8e
--- /dev/null
+++ b/mysql-test/suite/mariabackup/options_check.result
@@ -0,0 +1,7 @@
+# Check for unknown options in command-line
+# Check for unknown options in "mariabackup" group
+# Check for unknown options in "xtrabackup" group
+# Check for unknown options in "mariadb-backup" group
+# Check for options overwriting
+# Check if uknown options that follow --mysqld-args are ingored
+# Check if [mariadb-client] group is not loaded (MDEV-22894)
diff --git a/mysql-test/suite/mariabackup/options_check.test b/mysql-test/suite/mariabackup/options_check.test
new file mode 100644
index 00000000000..7483453d19b
--- /dev/null
+++ b/mysql-test/suite/mariabackup/options_check.test
@@ -0,0 +1,64 @@
+--let $targetdir=$MYSQLTEST_VARDIR/tmp/backup
+--let $custom_cnf=$MYSQLTEST_VARDIR/tmp/custom_my.cnf
+
+--echo # Check for unknown options in command-line
+--disable_result_log
+--error 7
+exec $XTRABACKUP --defaults-file=$MYSQLTEST_VARDIR/my.cnf --backup --unknown-option=xxx --target-dir=$targetdir;
+--error 2
+exec $XTRABACKUP --defaults-file=$MYSQLTEST_VARDIR/my.cnf --backup --unknown-option --target-dir=$targetdir;
+--enable_result_log
+
+--echo # Check for unknown options in "mariabackup" group
+--write_file $custom_cnf
+[mariabackup]
+unknown-option=XXX
+EOF
+--error 7
+exec $XTRABACKUP --defaults-file=$custom_cnf --backup --target-dir=$targetdir;
+--remove_file $custom_cnf
+
+--echo # Check for unknown options in "xtrabackup" group
+--write_file $custom_cnf
+[xtrabackup]
+unknown-option=XXX
+EOF
+--error 7
+exec $XTRABACKUP --defaults-file=$custom_cnf --backup --target-dir=$targetdir;
+--remove_file $custom_cnf
+
+--echo # Check for unknown options in "mariadb-backup" group
+--write_file $custom_cnf
+[mariadb-backup]
+unknown-option=XXX
+EOF
+--error 7
+exec $XTRABACKUP --defaults-file=$custom_cnf --backup --target-dir=$targetdir;
+--remove_file $custom_cnf
+
+--echo # Check for options overwriting
+--write_file $custom_cnf
+[mariadbd]
+innodb-flush-method=O_DIRECT
+
+[mariabackup]
+innodb-flush-method=blablabla
+EOF
+--error 13
+exec $XTRABACKUP --defaults-file=$custom_cnf --backup --target-dir=$targetdir;
+--remove_file $custom_cnf
+
+--echo # Check if uknown options that follow --mysqld-args are ingored
+exec $XTRABACKUP --defaults-file=$MYSQLTEST_VARDIR/my.cnf --backup --target-dir=$targetdir --mysqld-args --unknown-option;
+--rmdir $targetdir
+
+--echo # Check if [mariadb-client] group is not loaded (MDEV-22894)
+--copy_file $MYSQLTEST_VARDIR/my.cnf $custom_cnf
+--append_file $custom_cnf
+[mariadb-client]
+user=bla
+password=bla
+EOF
+exec $XTRABACKUP --defaults-file=$custom_cnf --backup --target-dir=$targetdir;
+--remove_file $custom_cnf
+--rmdir $targetdir
diff --git a/mysql-test/suite/mariabackup/undo_space_id.test b/mysql-test/suite/mariabackup/undo_space_id.test
index b582554b28a..2c56492fd8e 100644
--- a/mysql-test/suite/mariabackup/undo_space_id.test
+++ b/mysql-test/suite/mariabackup/undo_space_id.test
@@ -17,7 +17,7 @@ exec $XTRABACKUP --defaults-file=$MYSQLTEST_VARDIR/my.cnf  --backup --target-dir
 list_files $basedir undo*;
 
 --echo # xtrabackup prepare
-exec $XTRABACKUP --prepare --apply-log-only --target-dir=$basedir;
+exec $XTRABACKUP --prepare --target-dir=$basedir;
 --echo # Display undo log files from targer directory
 list_files $basedir undo*;
 
diff --git a/mysql-test/suite/mariabackup/xb_fulltext_encrypted.test b/mysql-test/suite/mariabackup/xb_fulltext_encrypted.test
index d5a5003c11a..f7b72b5ccea 100644
--- a/mysql-test/suite/mariabackup/xb_fulltext_encrypted.test
+++ b/mysql-test/suite/mariabackup/xb_fulltext_encrypted.test
@@ -16,7 +16,7 @@ let $targetdir=$MYSQLTEST_VARDIR/tmp/backup;
 --disable_result_log
 
 exec $INNOBACKUPEX --defaults-file=$MYSQLTEST_VARDIR/my.cnf --no-timestamp $targetdir;
-exec $INNOBACKUPEX --apply-log --rebuild-indexes --rebuild-threads=2 $targetdir;
+exec $INNOBACKUPEX --apply-log $targetdir;
 --source include/restart_and_restore.inc
 
 --enable_result_log
diff --git a/mysql-test/suite/mariabackup/xb_partition.test b/mysql-test/suite/mariabackup/xb_partition.test
index e6f8c5d996f..3d027b67fc1 100644
--- a/mysql-test/suite/mariabackup/xb_partition.test
+++ b/mysql-test/suite/mariabackup/xb_partition.test
@@ -38,7 +38,7 @@ INSERT INTO isam_p VALUES (1), (101), (201), (301);
 let $targetdir=$MYSQLTEST_VARDIR/tmp;
 
 --disable_result_log
-exec $XTRABACKUP --defaults-file=$MYSQLTEST_VARDIR/my.cnf --no-timestamp --backup --target-dir=$targetdir/full;
+exec $XTRABACKUP --defaults-file=$MYSQLTEST_VARDIR/my.cnf --backup --target-dir=$targetdir/full;
 --enable_result_log
 
 DROP TABLE t1;
diff --git a/mysys/my_getopt.c b/mysys/my_getopt.c
index 5576c8b5d5d..9747ee4214e 100644
--- a/mysys/my_getopt.c
+++ b/mysys/my_getopt.c
@@ -1,6 +1,6 @@
 /*
    Copyright (c) 2002, 2013, Oracle and/or its affiliates
-   Copyright (c) 2009, 2015, MariaDB
+   Copyright (c) 2009, 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
@@ -79,6 +79,12 @@ my_bool my_getopt_skip_unknown= 0;
 */
 my_bool my_getopt_prefix_matching= 1;
 
+/*
+   This is a flag that can be set in client programs. 1 means that
+   handle_options()  will not initialize options to default values.
+*/
+my_bool my_handle_options_init_variables = 1;
+
 my_getopt_value my_getopt_get_addr= 0;
 
 static void default_reporter(enum loglevel level, const char *format, ...)
@@ -205,7 +211,8 @@ int handle_options(int *argc, char ***argv, const struct my_option *longopts,
   DBUG_ASSERT(*argv);
   (*argc)--; /* Skip the program name */
   (*argv)++; /*      --- || ----      */
-  init_variables(longopts, init_one_value);
+  if (my_handle_options_init_variables)
+    init_variables(longopts, init_one_value);
 
   is_cmdline_arg= !is_file_marker(**argv);
 
diff --git a/scripts/wsrep_sst_mariabackup.sh b/scripts/wsrep_sst_mariabackup.sh
index 9aadcc0bc9b..1991fe4dd8d 100644
--- a/scripts/wsrep_sst_mariabackup.sh
+++ b/scripts/wsrep_sst_mariabackup.sh
@@ -56,8 +56,6 @@ sfmt="tar"
 strmcmd=""
 tfmt=""
 tcmd=""
-rebuild=0
-rebuildcmd=""
 payload=0
 pvformat="-F '%N => Rate:%r Avg:%a Elapsed:%t %e Bytes: %b %p' "
 pvopts="-f -i 10 -N $WSREP_SST_OPT_ROLE "
@@ -339,7 +337,6 @@ read_cnf()
     encrypt=$(parse_cnf sst encrypt 0)
     sockopt=$(parse_cnf sst sockopt "")
     progress=$(parse_cnf sst progress "")
-    rebuild=$(parse_cnf sst rebuild 0)
     ttime=$(parse_cnf sst time 0)
     cpat=$(parse_cnf sst cpat '.*galera\.cache$\|.*sst_in_progress$\|.*\.sst$\|.*gvwstate\.dat$\|.*grastate\.dat$\|.*\.err$\|.*\.log$\|.*RPM_UPGRADE_MARKER$\|.*RPM_UPGRADE_HISTORY$')
     [[ $OS == "FreeBSD" ]] && cpat=$(parse_cnf sst cpat '.*galera\.cache$|.*sst_in_progress$|.*\.sst$|.*gvwstate\.dat$|.*grastate\.dat$|.*\.err$|.*\.log$|.*RPM_UPGRADE_MARKER$|.*RPM_UPGRADE_HISTORY$')
@@ -708,7 +705,7 @@ if [[ ${FORCE_FTWRL:-0} -eq 1 ]];then
     iopts+=" --no-backup-locks "
 fi
 
-INNOEXTRA=$WSREP_SST_OPT_MYSQLD
+INNOEXTRA=
 
 INNODB_DATA_HOME_DIR=${INNODB_DATA_HOME_DIR:-""}
 # Try to set INNODB_DATA_HOME_DIR from the command line:
@@ -754,9 +751,9 @@ if [[ $ssyslog -eq 1 ]];then
             logger  -p daemon.info -t ${ssystag}wsrep-sst-$WSREP_SST_OPT_ROLE "$@" 
         }
 
-        INNOAPPLY="${INNOBACKUPEX_BIN} --innobackupex $disver $iapts \$INNOEXTRA --apply-log \$rebuildcmd \${DATA} 2>&1 | logger -p daemon.err -t ${ssystag}innobackupex-apply"
-        INNOMOVE="${INNOBACKUPEX_BIN} --innobackupex ${WSREP_SST_OPT_CONF} $disver $impts  --move-back --force-non-empty-directories \${DATA} 2>&1 | logger -p daemon.err -t ${ssystag}innobackupex-move"
-        INNOBACKUP="${INNOBACKUPEX_BIN} --innobackupex ${WSREP_SST_OPT_CONF} $disver $iopts \$tmpopts \$INNOEXTRA --galera-info --stream=\$sfmt \$itmpdir 2> >(logger -p daemon.err -t ${ssystag}innobackupex-backup)"
+        INNOAPPLY="${INNOBACKUPEX_BIN} --prepare $disver $iapts \$INNOEXTRA --target-dir=\${DATA} --mysqld-args \$WSREP_SST_OPT_MYSQLD  2>&1 | logger -p daemon.err -t ${ssystag}innobackupex-apply"
+        INNOMOVE="${INNOBACKUPEX_BIN} ${WSREP_SST_OPT_CONF} --move-back $disver $impts --force-non-empty-directories --target-dir=\${DATA} 2>&1 | logger -p daemon.err -t ${ssystag}innobackupex-move"
+        INNOBACKUP="${INNOBACKUPEX_BIN} ${WSREP_SST_OPT_CONF} --backup $disver $iopts \$tmpopts \$INNOEXTRA --galera-info --stream=\$sfmt --target-dir=\$itmpdir --mysqld-args \$WSREP_SST_OPT_MYSQLD 2> >(logger -p daemon.err -t ${ssystag}innobackupex-backup)"
     fi
 
 else
@@ -818,9 +815,9 @@ then
 
 fi
  
-    INNOAPPLY="${INNOBACKUPEX_BIN} --innobackupex $disver $iapts \$INNOEXTRA --apply-log \$rebuildcmd \${DATA} &> ${INNOAPPLYLOG}"
-    INNOMOVE="${INNOBACKUPEX_BIN} --innobackupex ${WSREP_SST_OPT_CONF} $disver $impts  --move-back --force-non-empty-directories \${DATA} &> ${INNOMOVELOG}"
-    INNOBACKUP="${INNOBACKUPEX_BIN} --innobackupex ${WSREP_SST_OPT_CONF} $disver $iopts \$tmpopts \$INNOEXTRA --galera-info --stream=\$sfmt \$itmpdir 2> ${INNOBACKUPLOG}"
+    INNOAPPLY="${INNOBACKUPEX_BIN} --prepare $disver $iapts \$INNOEXTRA --target-dir=\${DATA} --mysqld-args \$WSREP_SST_OPT_MYSQLD &> ${INNOAPPLYLOG}"
+    INNOMOVE="${INNOBACKUPEX_BIN} ${WSREP_SST_OPT_CONF} --move-back $disver $impts  --move-back --force-non-empty-directories --target-dir=\${DATA} &> ${INNOMOVELOG}"
+    INNOBACKUP="${INNOBACKUPEX_BIN} ${WSREP_SST_OPT_CONF} --backup $disver $iopts \$tmpopts \$INNOEXTRA --galera-info --stream=\$sfmt --target-dir=\$itmpdir --mysqld-args \$WSREP_SST_OPT_MYSQLD 2> ${INNOBACKUPLOG}"
 fi
 
 get_stream
@@ -862,15 +859,6 @@ then
            INNOEXTRA+=" --password="
         fi
 
-        get_keys
-        if [[ $encrypt -eq 1 ]];then
-            if [[ -n $ekey ]];then
-                INNOEXTRA+=" --encrypt=$ealgo --encrypt-key=$ekey"
-            else 
-                INNOEXTRA+=" --encrypt=$ealgo --encrypt-key-file=$ekeyfile"
-            fi
-        fi
-
         check_extra
 
         wsrep_log_info "Streaming GTID file before SST"
@@ -1091,18 +1079,6 @@ then
             exit 2
         fi
 
-        # Rebuild indexes for compact backups
-        if grep -q 'compact = 1' ${DATA}/xtrabackup_checkpoints;then 
-            wsrep_log_info "Index compaction detected"
-            rebuild=1
-        fi
-
-        if [[ $rebuild -eq 1 ]];then 
-            nthreads=$(parse_cnf xtrabackup rebuild-threads $nproc)
-            wsrep_log_info "Rebuilding during prepare with $nthreads threads"
-            rebuildcmd="--rebuild-indexes --rebuild-threads=$nthreads"
-        fi
-
         if test -n "$(find ${DATA} -maxdepth 1 -type f -name '*.qp' -print -quit)";then
 
             wsrep_log_info "Compressed qpress files found"
diff --git a/sql/encryption.cc b/sql/encryption.cc
index fc07623883e..9c38713fdfa 100644
--- a/sql/encryption.cc
+++ b/sql/encryption.cc
@@ -18,6 +18,7 @@
 #include "log.h"
 #include "sql_plugin.h"
 #include <my_crypt.h>
+#include <violite.h>
 
 /* there can be only one encryption plugin enabled */
 static plugin_ref encryption_manager= 0;
@@ -63,6 +64,8 @@ int initialize_encryption_plugin(st_plugin_int *plugin)
   if (encryption_manager)
     return 1;
 
+  vio_check_ssl_init();
+
   if (plugin->plugin->init && plugin->plugin->init(plugin))
   {
     sql_print_error("Plugin '%s' init function returned error.",
diff --git a/sql/opt_range.cc b/sql/opt_range.cc
index ab0040c9f7e..80d67d884bf 100644
--- a/sql/opt_range.cc
+++ b/sql/opt_range.cc
@@ -15942,15 +15942,6 @@ static void print_key_value(String *out, const KEY_PART_INFO *key_part,
   {
     field= key_part->field;
     store_length= key_part->store_length;
-    if (field->flags & BLOB_FLAG)
-    {
-      // Byte 0 of a nullable key is the null-byte. If set, key is NULL.
-      if (field->real_maybe_null() && *key)
-      {
-        out->append(STRING_WITH_LEN("NULL"));
-        goto next;
-      }
-    }
 
     if (field->real_maybe_null())
     {
diff --git a/sql/rpl_parallel.cc b/sql/rpl_parallel.cc
index af84c9e6f18..94882230682 100644
--- a/sql/rpl_parallel.cc
+++ b/sql/rpl_parallel.cc
@@ -467,6 +467,7 @@ pool_mark_busy(rpl_parallel_thread_pool *pool, THD *thd)
     So we protect the infrequent operations of FLUSH TABLES WITH READ LOCK and
     pool size changes with this condition wait.
   */
+  DBUG_EXECUTE_IF("mark_busy_mdev_22370",my_sleep(1000000););
   mysql_mutex_lock(&pool->LOCK_rpl_thread_pool);
   if (thd)
   {
@@ -2013,9 +2014,23 @@ rpl_parallel_thread_pool::init(uint32 size)
 void
 rpl_parallel_thread_pool::destroy()
 {
+  deactivate();
+  destroy_cond_mutex();
+}
+
+void
+rpl_parallel_thread_pool::deactivate()
+{
   if (!inited)
     return;
   rpl_parallel_change_thread_count(this, 0, 1);
+}
+
+void
+rpl_parallel_thread_pool::destroy_cond_mutex()
+{
+  if (!inited)
+    return;
   mysql_mutex_destroy(&LOCK_rpl_thread_pool);
   mysql_cond_destroy(&COND_rpl_thread_pool);
   inited= false;
diff --git a/sql/rpl_parallel.h b/sql/rpl_parallel.h
index 9d9fa63125c..b88e77d5427 100644
--- a/sql/rpl_parallel.h
+++ b/sql/rpl_parallel.h
@@ -244,6 +244,8 @@ struct rpl_parallel_thread_pool {
   rpl_parallel_thread_pool();
   int init(uint32 size);
   void destroy();
+  void deactivate();
+  void destroy_cond_mutex();
   struct rpl_parallel_thread *get_thread(rpl_parallel_thread **owner,
                                          rpl_parallel_entry *entry);
   void release_thread(rpl_parallel_thread *rpt);
diff --git a/sql/slave.cc b/sql/slave.cc
index 0b5e8e912cf..bd3bab224d3 100644
--- a/sql/slave.cc
+++ b/sql/slave.cc
@@ -1448,7 +1448,7 @@ void slave_prepare_for_shutdown()
   mysql_mutex_unlock(&LOCK_active_mi);
   // It's safe to destruct worker pool now when
   // all driver threads are gone.
-  global_rpl_thread_pool.destroy();
+  global_rpl_thread_pool.deactivate();
   stop_slave_background_thread();
 }
 
diff --git a/storage/innobase/btr/btr0pcur.cc b/storage/innobase/btr/btr0pcur.cc
index aac080d1a6e..cc8c11c42e1 100644
--- a/storage/innobase/btr/btr0pcur.cc
+++ b/storage/innobase/btr/btr0pcur.cc
@@ -158,7 +158,7 @@ before_first:
 			ut_ad(index->is_instant());
 			ut_ad(page_get_n_recs(block->frame) == 1);
 			ut_ad(page_is_leaf(block->frame));
-			ut_ad(!page_has_siblings(block->frame));
+			ut_ad(!page_has_prev(block->frame));
 			cursor->rel_pos = BTR_PCUR_AFTER_LAST_IN_TREE;
 			return;
 		}
diff --git a/storage/innobase/trx/trx0trx.cc b/storage/innobase/trx/trx0trx.cc
index 9c2c9a02536..51b9bd379a5 100644
--- a/storage/innobase/trx/trx0trx.cc
+++ b/storage/innobase/trx/trx0trx.cc
@@ -840,14 +840,9 @@ static trx_rseg_t* trx_assign_rseg_low()
 
 	/* Choose a rollback segment evenly distributed between 0 and
 	innodb_undo_logs-1 in a round-robin fashion, skipping those
-	undo tablespaces that are scheduled for truncation.
-
-	Because rseg_slot is not protected by atomics or any mutex, race
-	conditions are possible, meaning that multiple transactions
-	that start modifications concurrently will write their undo
-	log to the same rollback segment. */
-	static ulong	rseg_slot;
-	ulint		slot = rseg_slot++ % TRX_SYS_N_RSEGS;
+	undo tablespaces that are scheduled for truncation. */
+	static Atomic_counter<unsigned>	rseg_slot;
+	unsigned slot = rseg_slot++ % TRX_SYS_N_RSEGS;
 	ut_d(if (trx_rseg_n_slots_debug) slot = 0);
 	trx_rseg_t*	rseg;
 
@@ -926,11 +921,8 @@ trx_t::assign_temp_rseg()
 	compile_time_assert(ut_is_2pow(TRX_SYS_N_RSEGS));
 
 	/* Choose a temporary rollback segment between 0 and 127
-	in a round-robin fashion. Because rseg_slot is not protected by
-	atomics or any mutex, race conditions are possible, meaning that
-	multiple transactions that start modifications concurrently
-	will write their undo log to the same rollback segment. */
-	static ulong	rseg_slot;
+	in a round-robin fashion. */
+	static Atomic_counter<unsigned> rseg_slot;
 	trx_rseg_t*	rseg = trx_sys.temp_rsegs[
 		rseg_slot++ & (TRX_SYS_N_RSEGS - 1)];
 	ut_ad(!rseg->is_persistent());
diff --git a/vio/viosslfactories.c b/vio/viosslfactories.c
index 3783331e7df..d9fcc942a71 100644
--- a/vio/viosslfactories.c
+++ b/vio/viosslfactories.c
@@ -150,7 +150,7 @@ vio_set_cert_stuff(SSL_CTX *ctx, const char *cert_file, const char *key_file,
 }
 
 
-static void check_ssl_init()
+void vio_check_ssl_init()
 {
   if (!ssl_algorithms_added)
   {
@@ -243,7 +243,7 @@ new_VioSSLFd(const char *key_file, const char *cert_file,
               crl_file ? crl_file : "NULL",
               crl_path ? crl_path : "NULL"));
 
-  check_ssl_init();
+  vio_check_ssl_init();
 
   if (!(ssl_fd= ((struct st_VioSSLFd*)
                  my_malloc(key_memory_vio_ssl_fd,