MDEV-6594: Use separate domain_id for Galera transactions

mysql-test/suite/galera/include/print_gtid.inc

@@ -0,0 +1,11 @@
+--echo list of GTID variables :
+--disable_query_log
+query_vertical
+SELECT @@global.gtid_domain_id AS gtid_domain_id,
+  @@global.gtid_binlog_pos AS gtid_binlog_pos,
+  @@global.gtid_binlog_state AS gtid_binlog_state,
+  @@global.gtid_current_pos AS gtid_current_pos,
+  @@global.gtid_slave_pos AS gtid_slave_pos,
+  @@global.wsrep_gtid_domain_id AS wsrep_gtid_domain_id,
+  @@global.wsrep_gtid_mode AS wsrep_gtid_mode;
+--enable_query_log

mysql-test/suite/galera/r/galera_var_gtid_domain_id.result

@@ -0,0 +1,74 @@
+# On node_1
+list of GTID variables :
+gtid_domain_id	1
+gtid_binlog_pos	
+gtid_binlog_state	
+gtid_current_pos	
+gtid_slave_pos	
+wsrep_gtid_domain_id	9999
+wsrep_gtid_mode	1
+# On node_2
+list of GTID variables :
+gtid_domain_id	2
+gtid_binlog_pos	
+gtid_binlog_state	
+gtid_current_pos	
+gtid_slave_pos	
+wsrep_gtid_domain_id	9999
+wsrep_gtid_mode	1
+# On node_1
+CREATE TABLE t1(i INT) ENGINE=INNODB;
+CREATE TABLE t2(i INT) ENGINE=MEMORY;
+INSERT INTO t1 VALUES(1);
+SELECT * FROM t1;
+i
+1
+SELECT * FROM t2;
+i
+list of GTID variables :
+gtid_domain_id	1
+gtid_binlog_pos	9999-1-3
+gtid_binlog_state	9999-1-3
+gtid_current_pos	9999-1-3
+gtid_slave_pos	
+wsrep_gtid_domain_id	9999
+wsrep_gtid_mode	1
+# On node_2
+SELECT * FROM t1;
+i
+1
+list of GTID variables :
+gtid_domain_id	2
+gtid_binlog_pos	9999-1-3
+gtid_binlog_state	9999-1-3
+gtid_current_pos	
+gtid_slave_pos	
+wsrep_gtid_domain_id	9999
+wsrep_gtid_mode	1
+# On node_1
+INSERT INTO t2 VALUES(1);
+SELECT * FROM t2;
+i
+1
+list of GTID variables :
+gtid_domain_id	1
+gtid_binlog_pos	1-1-1,9999-1-3
+gtid_binlog_state	1-1-1,9999-1-3
+gtid_current_pos	1-1-1,9999-1-3
+gtid_slave_pos	
+wsrep_gtid_domain_id	9999
+wsrep_gtid_mode	1
+# On node_2
+SELECT * FROM t2;
+i
+list of GTID variables :
+gtid_domain_id	2
+gtid_binlog_pos	9999-1-3
+gtid_binlog_state	9999-1-3
+gtid_current_pos	
+gtid_slave_pos	
+wsrep_gtid_domain_id	9999
+wsrep_gtid_mode	1
+# On node_1
+DROP TABLE t1, t2;
+# End of test

mysql-test/suite/galera/t/galera_var_gtid_domain_id.cnf

@@ -0,0 +1,16 @@
+!include ../galera_2nodes.cnf
+
+[mysqld]
+log-bin
+log-slave-updates
+
+[mysqld.1]
+gtid_domain_id=1
+wsrep_gtid_mode=ON
+wsrep_gtid_domain_id=9999
+
+[mysqld.2]
+gtid_domain_id=2
+wsrep_gtid_mode=ON
+#wsrep_gitd_domain_id value will be inherited from donor node (mysqld.1)
+#wsrep_gitd_domain_id=X 

mysql-test/suite/galera/t/galera_var_gtid_domain_id.test

@@ -0,0 +1,53 @@
+# Test for @@wsrep_gtid_mode and @@wsrep_gtid_domain_id variables
+#
+# When @@wsrep_gtid_mode=ON, all DDL/DML commands and transactions that
+# are meant to be replicated over Galera cluster nodes are tagged with
+# galera gtid_domain_id (@@wsrep_gtid_domain_id), while others are tagged
+# with the local domain_id (@@gtid_domain_id).
+
+--source include/galera_cluster.inc
+--source include/have_innodb.inc
+
+--echo # On node_1
+--connection node_1
+# print initial GTIDs
+source include/print_gtid.inc;
+
+--echo # On node_2
+--connection node_2
+# print initial GTIDs
+source include/print_gtid.inc;
+
+--echo # On node_1
+--connection node_1
+CREATE TABLE t1(i INT) ENGINE=INNODB;
+CREATE TABLE t2(i INT) ENGINE=MEMORY;
+INSERT INTO t1 VALUES(1);
+SELECT * FROM t1;
+SELECT * FROM t2;
+source include/print_gtid.inc;
+
+--echo # On node_2
+--connection node_2
+SELECT * FROM t1;
+source include/print_gtid.inc;
+
+--echo # On node_1
+--connection node_1
+INSERT INTO t2 VALUES(1);
+SELECT * FROM t2;
+source include/print_gtid.inc;
+
+--echo # On node_2
+--connection node_2
+SELECT * FROM t2;
+source include/print_gtid.inc;
+
+--echo # On node_1
+--connection node_1
+# Cleanup
+DROP TABLE t1, t2;
+
+--source include/galera_end.inc
+--echo # End of test
+

mysql-test/suite/sys_vars/r/sysvars_wsrep.result

@@ -183,6 +183,34 @@ NUMERIC_BLOCK_SIZE	NULL
 ENUM_VALUE_LIST	MIXED,STATEMENT,ROW,NONE
 READ_ONLY	NO
 COMMAND_LINE_ARGUMENT	REQUIRED
+VARIABLE_NAME	WSREP_GTID_DOMAIN_ID
+SESSION_VALUE	NULL
+GLOBAL_VALUE	0
+GLOBAL_VALUE_ORIGIN	COMPILE-TIME
+DEFAULT_VALUE	0
+VARIABLE_SCOPE	GLOBAL
+VARIABLE_TYPE	INT UNSIGNED
+VARIABLE_COMMENT	When wsrep_gtid_mode is set, this value is used as gtid_domain_id for galera transactions and also copied to the joiner nodes during state transfer. It is ignored, otherwise.
+NUMERIC_MIN_VALUE	0
+NUMERIC_MAX_VALUE	4294967295
+NUMERIC_BLOCK_SIZE	1
+ENUM_VALUE_LIST	NULL
+READ_ONLY	NO
+COMMAND_LINE_ARGUMENT	REQUIRED
+VARIABLE_NAME	WSREP_GTID_MODE
+SESSION_VALUE	NULL
+GLOBAL_VALUE	OFF
+GLOBAL_VALUE_ORIGIN	COMPILE-TIME
+DEFAULT_VALUE	OFF
+VARIABLE_SCOPE	GLOBAL
+VARIABLE_TYPE	BOOLEAN
+VARIABLE_COMMENT	Automatically update the (joiner) node's wsrep_gtid_domain_id value with that of donor's (received during state transfer) and use it in place of gtid_domain_id for all galera transactions. When OFF (default), wsrep_gtid_domain_id is simply ignored (backward compatibility).
+NUMERIC_MIN_VALUE	NULL
+NUMERIC_MAX_VALUE	NULL
+NUMERIC_BLOCK_SIZE	NULL
+ENUM_VALUE_LIST	OFF,ON
+READ_ONLY	NO
+COMMAND_LINE_ARGUMENT	OPTIONAL
 VARIABLE_NAME	WSREP_LOAD_DATA_SPLITTING
 SESSION_VALUE	NULL
 GLOBAL_VALUE	ON

mysql-test/suite/sys_vars/r/wsrep_gtid_domain_id_basic.result

@@ -0,0 +1,47 @@
+#
+# wsrep_gtid_domain_id
+#
+# save the initial value
+SET @wsrep_gtid_domain_id_global_saved = @@global.wsrep_gtid_domain_id;
+# default
+SELECT @@global.wsrep_gtid_domain_id;
+@@global.wsrep_gtid_domain_id
+0
+
+# scope
+SELECT @@session.wsrep_gtid_domain_id;
+ERROR HY000: Variable 'wsrep_gtid_domain_id' is a GLOBAL variable
+SET @@global.wsrep_gtid_domain_id=1;
+SELECT @@global.wsrep_gtid_domain_id;
+@@global.wsrep_gtid_domain_id
+1
+
+# valid values
+SET @@global.wsrep_gtid_domain_id=10;
+SELECT @@global.wsrep_gtid_domain_id;
+@@global.wsrep_gtid_domain_id
+10
+SET @@global.wsrep_gtid_domain_id=0;
+SELECT @@global.wsrep_gtid_domain_id;
+@@global.wsrep_gtid_domain_id
+0
+SET @@global.wsrep_gtid_domain_id=default;
+SELECT @global.wsrep_gtid_domain_id;
+@global.wsrep_gtid_domain_id
+NULL
+
+# invalid values
+SET @@global.wsrep_gtid_domain_id=NULL;
+ERROR 42000: Incorrect argument type to variable 'wsrep_gtid_domain_id'
+SET @@global.wsrep_gtid_domain_id='junk';
+ERROR 42000: Incorrect argument type to variable 'wsrep_gtid_domain_id'
+SET @@global.wsrep_gtid_domain_id=-1;
+Warnings:
+Warning	1292	Truncated incorrect wsrep_gtid_domain_id value: '-1'
+SELECT @global.wsrep_gtid_domain_id;
+@global.wsrep_gtid_domain_id
+NULL
+
+# restore the initial value
+SET @@global.wsrep_gtid_domain_id = @wsrep_gtid_domain_id_global_saved;
+# End of test

mysql-test/suite/sys_vars/r/wsrep_gtid_mode_basic.result

@@ -0,0 +1,31 @@
+#
+# wsrep_gtid_mode
+#
+# save the initial value
+SET @wsrep_gtid_mode_global_saved = @@global.wsrep_gtid_mode;
+# default
+SELECT @@global.wsrep_gtid_mode;
+@@global.wsrep_gtid_mode
+0
+SELECT @@session.wsrep_gtid_mode;
+ERROR HY000: Variable 'wsrep_gtid_mode' is a GLOBAL variable
+
+# scope and valid values
+SET @@global.wsrep_gtid_mode=OFF;
+SELECT @@global.wsrep_gtid_mode;
+@@global.wsrep_gtid_mode
+0
+SET @@global.wsrep_gtid_mode=ON;
+SELECT @@global.wsrep_gtid_mode;
+@@global.wsrep_gtid_mode
+1
+
+# invalid values
+SET @@global.wsrep_gtid_mode=NULL;
+ERROR 42000: Variable 'wsrep_gtid_mode' can't be set to the value of 'NULL'
+SET @@global.wsrep_gtid_mode='junk';
+ERROR 42000: Variable 'wsrep_gtid_mode' can't be set to the value of 'junk'
+
+# restore the initial value
+SET @@global.wsrep_gtid_mode = @wsrep_gtid_mode_global_saved;
+# End of test

mysql-test/suite/sys_vars/t/wsrep_gtid_domain_id_basic.test

@@ -0,0 +1,43 @@
+--source include/have_wsrep.inc
+
+--echo #
+--echo # wsrep_gtid_domain_id
+--echo #
+
+--echo # save the initial value
+SET @wsrep_gtid_domain_id_global_saved = @@global.wsrep_gtid_domain_id;
+
+--echo # default
+SELECT @@global.wsrep_gtid_domain_id;
+
+--echo
+--echo # scope
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.wsrep_gtid_domain_id;
+SET @@global.wsrep_gtid_domain_id=1;
+SELECT @@global.wsrep_gtid_domain_id;
+
+--echo
+--echo # valid values
+SET @@global.wsrep_gtid_domain_id=10;
+SELECT @@global.wsrep_gtid_domain_id;
+SET @@global.wsrep_gtid_domain_id=0;
+SELECT @@global.wsrep_gtid_domain_id;
+SET @@global.wsrep_gtid_domain_id=default;
+SELECT @global.wsrep_gtid_domain_id;
+
+--echo
+--echo # invalid values
+--error ER_WRONG_TYPE_FOR_VAR
+SET @@global.wsrep_gtid_domain_id=NULL;
+--error ER_WRONG_TYPE_FOR_VAR
+SET @@global.wsrep_gtid_domain_id='junk';
+# expect warning : Truncated incorrect wsrep_gtid_domain_id value: '-1'
+SET @@global.wsrep_gtid_domain_id=-1;
+SELECT @global.wsrep_gtid_domain_id;
+
+--echo
+--echo # restore the initial value
+SET @@global.wsrep_gtid_domain_id = @wsrep_gtid_domain_id_global_saved;
+
+--echo # End of test

mysql-test/suite/sys_vars/t/wsrep_gtid_mode_basic.test

@@ -0,0 +1,33 @@
+--source include/have_wsrep.inc
+
+--echo #
+--echo # wsrep_gtid_mode
+--echo #
+
+--echo # save the initial value
+SET @wsrep_gtid_mode_global_saved = @@global.wsrep_gtid_mode;
+
+--echo # default
+SELECT @@global.wsrep_gtid_mode;
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT @@session.wsrep_gtid_mode;
+
+--echo
+--echo # scope and valid values
+SET @@global.wsrep_gtid_mode=OFF;
+SELECT @@global.wsrep_gtid_mode;
+SET @@global.wsrep_gtid_mode=ON;
+SELECT @@global.wsrep_gtid_mode;
+
+--echo
+--echo # invalid values
+--error ER_WRONG_VALUE_FOR_VAR
+SET @@global.wsrep_gtid_mode=NULL;
+--error ER_WRONG_VALUE_FOR_VAR
+SET @@global.wsrep_gtid_mode='junk';
+
+--echo
+--echo # restore the initial value
+SET @@global.wsrep_gtid_mode = @wsrep_gtid_mode_global_saved;
+
+--echo # End of test

scripts/wsrep_sst_common.sh

@@ -91,6 +91,10 @@ case "$1" in
         WSREP_SST_OPT_BINLOG="$2"
         shift
         ;;
+    '--gtid-domain-id')
+        readonly WSREP_SST_OPT_GTID_DOMAIN_ID="$2"
+        shift
+        ;;
     *) # must be command
        # usage
        # exit 1

scripts/wsrep_sst_mysqldump.sh

@@ -96,6 +96,17 @@ DROP PREPARE stmt;"
 
 SET_START_POSITION="SET GLOBAL wsrep_start_position='$WSREP_SST_OPT_GTID';"
 
+SET_WSREP_GTID_DOMAIN_ID=""
+if [ -n WSREP_SST_OPT_GTID_DOMAIN_ID]
+then
+  SET_WSREP_GTID_DOMAIN_ID="
+  SET @val = (SELECT GLOBAL_VALUE FROM INFORMATION_SCHEMA.SYSTEM_VARIABLES WHERE VARIABLE_NAME = 'WSREP_GTID_STRICT_MODE' AND GLOBAL_VALUE > 0);
+  SET @stmt = IF (@val IS NOT NULL, 'SET GLOBAL WSREP_GTID_DOMAIN_ID=$WSREP_SST_OPT_GTID_DOMAIN_ID', 'SET @dummy = 0');
+  PREPARE stmt FROM @stmt;
+  EXECUTE stmt;
+  DROP PREPARE stmt;"
+fi
+
 # Retrieve the donor's @@global.gtid_binlog_state.
 GTID_BINLOG_STATE=$(echo "SHOW GLOBAL VARIABLES LIKE 'gtid_binlog_state'" |\
 mysql $AUTH -S$WSREP_SST_OPT_SOCKET --disable-reconnect --connect_timeout=10 |\
@@ -157,7 +168,8 @@ then
      echo $SET_GTID_BINLOG_STATE && echo $SQL_LOG_BIN_OFF && \
      echo $STOP_WSREP && $MYSQLDUMP && echo $CSV_TABLES_FIX && \
      echo $RESTORE_GENERAL_LOG && echo $RESTORE_SLOW_QUERY_LOG && \
-     echo $SET_START_POSITION || echo "SST failed to complete;") | $MYSQL
+     echo $SET_START_POSITION && echo $SET_WSREP_GTID_DOMAIN_ID \
+     || echo "SST failed to complete;") | $MYSQL
 else
     wsrep_log_info "Bypassing state dump."
     echo $SET_START_POSITION | $MYSQL

scripts/wsrep_sst_rsync.sh

@@ -131,7 +131,9 @@ then
 
         echo "flush tables"
 
-        # wait for tables flushed and state ID written to the file
+        # Wait for :
+        # (a) tables to be flushed, and
+        # (b) state ID & wsrep_gtid_domain_id to be written to the file.
         while [ ! -r "$FLUSHED" ] && ! grep -q ':' "$FLUSHED" >/dev/null 2>&1
         do
             sleep 0.2
@@ -217,7 +219,10 @@ then
 
     else # BYPASS
         wsrep_log_info "Bypassing state dump."
-        STATE="$WSREP_SST_OPT_GTID"
+
+        # Store donor's wsrep GTID (state ID) and wsrep_gtid_domain_id
+        # (separated by a space).
+        STATE="$WSREP_SST_OPT_GTID $WSREP_SST_OPT_GTID_DOMAIN_ID"
     fi
 
     echo "continue" # now server can resume updating data
@@ -323,7 +328,8 @@ EOF
     fi
     if [ -r "$MAGIC_FILE" ]
     then
-        cat "$MAGIC_FILE" # output UUID:seqno
+        # UUID:seqno & wsrep_gtid_domain_id is received here.
+        cat "$MAGIC_FILE" # Output : UUID:seqno wsrep_gtid_domain_id
     else
         # this message should cause joiner to abort
         echo "rsync process ended without creating '$MAGIC_FILE'"

scripts/wsrep_sst_xtrabackup-v2.sh

@@ -604,7 +604,9 @@ then
 
         wsrep_log_info "Streaming GTID file before SST"
 
-        echo "${WSREP_SST_OPT_GTID}" > "${MAGIC_FILE}"
+        # Store donor's wsrep GTID (state ID) and wsrep_gtid_domain_id
+        # (separated by a space).
+        echo "${WSREP_SST_OPT_GTID} ${WSREP_SST_OPT_GTID_DOMAIN_ID}" > "${MAGIC_FILE}"
 
         ttcmd="$tcmd"
 
@@ -660,7 +662,10 @@ then
 
         wsrep_log_info "Bypassing the SST for IST"
         echo "continue" # now server can resume updating data
-        echo "${WSREP_SST_OPT_GTID}" > "${MAGIC_FILE}"
+
+        # Store donor's wsrep GTID (state ID) and wsrep_gtid_domain_id
+        # (separated by a space).
+        echo "${WSREP_SST_OPT_GTID} ${WSREP_SST_OPT_GTID_DOMAIN_ID}" > "${MAGIC_FILE}"
         echo "1" > "${DATA}/${IST_FILE}"
         get_keys
         if [[ $encrypt -eq 1 ]];then
@@ -923,7 +928,7 @@ then
         wsrep_log_error "SST magic file ${MAGIC_FILE} not found/readable"
         exit 2
     fi
-    cat "${MAGIC_FILE}" # output UUID:seqno
+    cat "${MAGIC_FILE}" # Output : UUID:seqno wsrep_gtid_domain_id
     wsrep_log_info "Total time on joiner: $totime seconds"
 fi
 

scripts/wsrep_sst_xtrabackup.sh

@@ -487,13 +487,14 @@ then
         # innobackupex implicitly writes PID to fixed location in ${TMPDIR}
         XTRABACKUP_PID="${TMPDIR}/xtrabackup_pid"
 
-
     else # BYPASS FOR IST
 
         wsrep_log_info "Bypassing the SST for IST"
-        STATE="${WSREP_SST_OPT_GTID}"
         echo "continue" # now server can resume updating data
-        echo "${STATE}" > "${MAGIC_FILE}"
+
+        # Store donor's wsrep GTID (state ID) and wsrep_gtid_domain_id
+        # (separated by a space)
+        echo "${WSREP_SST_OPT_GTID} ${WSREP_SST_OPT_GTID_DOMAIN_ID}" > "${MAGIC_FILE}"
         echo "1" > "${DATA}/${IST_FILE}"
         get_keys
         pushd ${DATA} 1>/dev/null
@@ -708,7 +709,7 @@ then
         exit 2
     fi
 
-    cat "${MAGIC_FILE}" # output UUID:seqno
+    cat "${MAGIC_FILE}" # Output : UUID:seqno wsrep_gtid_domain_id
     wsrep_log_info "Total time on joiner: $totime seconds"
 fi
 

sql/log.cc

@@ -5616,13 +5616,26 @@ MYSQL_BIN_LOG::write_gtid_event(THD *thd, bool standalone,
                                 bool is_transactional, uint64 commit_id)
 {
   rpl_gtid gtid;
-  uint32 domain_id= thd->variables.gtid_domain_id;
+  uint32 domain_id;
-  uint32 server_id= thd->variables.server_id;
+  uint32 server_id;
-  uint64 seq_no= thd->variables.gtid_seq_no;
+  uint64 seq_no;
   int err;
   DBUG_ENTER("write_gtid_event");
   DBUG_PRINT("enter", ("standalone: %d", standalone));
-  
+
+#ifdef WITH_WSREP
+  if (WSREP(thd) && thd->wsrep_trx_meta.gtid.seqno != -1 && wsrep_gtid_mode)
+  {
+    domain_id= wsrep_gtid_domain_id;
+  } else {
+#endif /* WITH_WSREP */
+  domain_id= thd->variables.gtid_domain_id;
+#ifdef WITH_WSREP
+  }
+#endif /* WITH_WSREP */
+  server_id= thd->variables.server_id;
+  seq_no= thd->variables.gtid_seq_no;
+
   if (thd->variables.option_bits & OPTION_GTID_BEGIN)
   {
     DBUG_PRINT("error", ("OPTION_GTID_BEGIN is set. "

sql/sys_vars.cc

@@ -4859,6 +4859,22 @@ static Sys_var_mybool Sys_wsrep_dirty_reads(
        "is not ready.", SESSION_ONLY(wsrep_dirty_reads), NO_CMD_LINE,
        DEFAULT(FALSE), NO_MUTEX_GUARD, NOT_IN_BINLOG);
 
+static Sys_var_uint Sys_wsrep_gtid_domain_id(
+       "wsrep_gtid_domain_id", "When wsrep_gtid_mode is set, this value is "
+       "used as gtid_domain_id for galera transactions and also copied to the "
+       "joiner nodes during state transfer. It is ignored, otherwise.",
+       GLOBAL_VAR(wsrep_gtid_domain_id), CMD_LINE(REQUIRED_ARG),
+       VALID_RANGE(0, UINT_MAX32), DEFAULT(0), BLOCK_SIZE(1), NO_MUTEX_GUARD,
+       NOT_IN_BINLOG);
+
+static Sys_var_mybool Sys_wsrep_gtid_mode(
+       "wsrep_gtid_mode", "Automatically update the (joiner) node's "
+       "wsrep_gtid_domain_id value with that of donor's (received during "
+       "state transfer) and use it in place of gtid_domain_id for all galera "
+       "transactions. When OFF (default), wsrep_gtid_domain_id is simply "
+       "ignored (backward compatibility).",
+       GLOBAL_VAR(wsrep_gtid_mode), CMD_LINE(OPT_ARG), DEFAULT(FALSE));
+
 #endif /* WITH_WSREP */
 
 static bool fix_host_cache_size(sys_var *, THD *, enum_var_type)

sql/wsrep_mysqld.cc

@@ -89,6 +89,12 @@ my_bool wsrep_restart_slave_activated  = 0; // node has dropped, and slave
 my_bool wsrep_slave_UK_checks          = 0; // slave thread does UK checks
 my_bool wsrep_slave_FK_checks          = 0; // slave thread does FK checks
 bool wsrep_new_cluster                 = false; // Bootstrap the cluster ?
+
+// Use wsrep_gtid_domain_id for galera transactions?
+bool wsrep_gtid_mode                   = 0;
+// gtid_domain_id for galera transactions.
+uint32 wsrep_gtid_domain_id            = 0;
+
 /*
  * End configuration options
  */
@@ -1711,6 +1717,12 @@ pthread_handler_t start_wsrep_THD(void *arg)
   mysql_mutex_lock(&LOCK_thread_count);
   thd->thread_id=thread_id++;
 
+  if (wsrep_gtid_mode)
+  {
+    /* Adjust domain_id. */
+    thd->variables.gtid_domain_id= wsrep_gtid_domain_id;
+  }
+
   thd->real_id=pthread_self(); // Keep purify happy
   thread_count++;
   thread_created++;

sql/wsrep_mysqld.h

@@ -88,6 +88,8 @@ extern my_bool     wsrep_slave_FK_checks;
 extern my_bool     wsrep_slave_UK_checks;
 extern ulong       wsrep_running_threads;
 extern bool        wsrep_new_cluster;
+extern bool        wsrep_gtid_mode;
+extern uint32      wsrep_gtid_domain_id;
 
 enum enum_wsrep_OSU_method { WSREP_OSU_TOI, WSREP_OSU_RSU };
 enum enum_wsrep_sync_wait {

sql/wsrep_sst.cc

@@ -435,17 +435,53 @@ static void* sst_joiner_thread (void* a)
 
     if (!tmp)
     {
-      WSREP_ERROR("Failed to read uuid:seqno from joiner script.");
+      WSREP_ERROR("Failed to read uuid:seqno and wsrep_gtid_domain_id from "
+                  "joiner script.");
       if (proc.error()) err = proc.error();
     }
     else
     {
-      err= sst_scan_uuid_seqno (out, &ret_uuid, &ret_seqno);
+      // Read state ID (UUID:SEQNO) followed by wsrep_gtid_domain_id (if any).
+      const char *pos= strchr(out, ' ');
+
+      if (!pos) {
+        // There is no wsrep_gtid_domain_id (some older version SST script?).
+        err= sst_scan_uuid_seqno (out, &ret_uuid, &ret_seqno);
+
+      } else {
+        // Scan state ID first followed by wsrep_gtid_domain_id.
+        char uuid[512];
+        uint32 domain_id;
+        size_t len= pos - out + 1;
+
+        if (len > sizeof(uuid)) goto err;       // safety check
+        memcpy(uuid, out, len);                 // including '\0'
+        err= sst_scan_uuid_seqno (uuid, &ret_uuid, &ret_seqno);
+
+        if (err)
+        {
+          goto err;
+        }
+        else if (wsrep_gtid_mode)
+        {
+          domain_id= strtol(pos + 1, NULL, 10);
+          if (domain_id < 1000 || domain_id > 0xFFFF)
+          {
+            WSREP_ERROR("Failed to get donor wsrep_gtid_domain_id.");
+            err= EINVAL;
+            goto err;
+          } else {
+            wsrep_gtid_domain_id= domain_id;
+          }
+        }
+      }
     }
 
+err:
+
     if (err)
     {
-      ret_uuid=  WSREP_UUID_UNDEFINED;
+      ret_uuid= WSREP_UUID_UNDEFINED;
       ret_seqno= -err;
     }
 
@@ -784,11 +820,12 @@ static int sst_donate_mysqldump (const char*         addr,
               WSREP_SST_OPT_LPORT" '%u' "
               WSREP_SST_OPT_SOCKET" '%s' "
               " %s "
-              WSREP_SST_OPT_GTID" '%s:%lld'"
+              WSREP_SST_OPT_GTID" '%s:%lld' "
+              WSREP_SST_OPT_GTID_DOMAIN_ID" '%d'"
               "%s",
               user, pswd, host, port, mysqld_port, mysqld_unix_port,
-              wsrep_defaults_file, uuid_str,
+              wsrep_defaults_file, uuid_str, (long long)seqno,
-              (long long)seqno, bypass ? " "WSREP_SST_OPT_BYPASS : "");
+              wsrep_gtid_domain_id, bypass ? " "WSREP_SST_OPT_BYPASS : "");
 
     WSREP_DEBUG("Running: '%s'", cmd_str);
 
@@ -885,8 +922,10 @@ static int sst_flush_tables(THD* thd)
     }
     else
     {
-      fprintf(file, "%s:%lld\n",
+      // Write cluster state ID and wsrep_gtid_domain_id.
-              wsrep_cluster_state_uuid, (long long)wsrep_locked_seqno);
+      fprintf(file, "%s:%lld %d\n",
+              wsrep_cluster_state_uuid, (long long)wsrep_locked_seqno,
+              wsrep_gtid_domain_id);
       fsync(fileno(file));
       fclose(file);
       if (rename(tmp_name, real_name) == -1)
@@ -1058,12 +1097,13 @@ static int sst_donate_other (const char*   method,
                  WSREP_SST_OPT_DATA" '%s' "
                  " %s "
                  " %s '%s' "
-                 WSREP_SST_OPT_GTID" '%s:%lld'"
+                 WSREP_SST_OPT_GTID" '%s:%lld' "
+                 WSREP_SST_OPT_GTID_DOMAIN_ID" '%d'"
                  "%s",
                  method, addr, sst_auth_real, mysqld_unix_port,
                  mysql_real_data_home, wsrep_defaults_file,
                  binlog_opt, binlog_opt_val,
-                 uuid, (long long) seqno,
+                 uuid, (long long) seqno, wsrep_gtid_domain_id,
                  bypass ? " "WSREP_SST_OPT_BYPASS : "");
   my_free(binlog_opt_val);
 

sql/wsrep_sst.h

@@ -42,6 +42,7 @@
 #define WSREP_SST_OPT_SOCKET   "--socket"
 #define WSREP_SST_OPT_GTID     "--gtid"
 #define WSREP_SST_OPT_BYPASS   "--bypass"
+#define WSREP_SST_OPT_GTID_DOMAIN_ID "--gtid-domain-id"
 
 #define WSREP_SST_MYSQLDUMP    "mysqldump"
 #define WSREP_SST_RSYNC        "rsync"