MDEV-27697. Two affected tests fixed.

A result file is updated in one case and former error simulation got
refined.

4 files changed, 18 insertions, 2 deletions

diff --git a/mysql-test/suite/binlog_encryption/rpl_parallel.result b/mysql-test/suite/binlog_encryption/rpl_parallel.result
index 12e5455c6c1..79efad1a27a 100644
--- a/mysql-test/suite/binlog_encryption/rpl_parallel.result
+++ b/mysql-test/suite/binlog_encryption/rpl_parallel.result
@@ -1379,6 +1379,7 @@ include/stop_slave.inc
 SET GLOBAL slave_parallel_threads=1;
 SET @old_dbug= @@GLOBAL.debug_dbug;
 SET GLOBAL debug_dbug="+d,slave_discard_xid_for_gtid_0_x_1000";
+CALL mtr.add_suppression("Unexpected break of being relay-logged GTID");
 connection server_1;
 INSERT INTO t2 VALUES (101);
 INSERT INTO t2 VALUES (102);
diff --git a/mysql-test/suite/rpl/r/rpl_parallel_temptable.result b/mysql-test/suite/rpl/r/rpl_parallel_temptable.result
index 52efed22541..1a1c12f836d 100644
--- a/mysql-test/suite/rpl/r/rpl_parallel_temptable.result
+++ b/mysql-test/suite/rpl/r/rpl_parallel_temptable.result
@@ -132,8 +132,13 @@ connection server_1;
 INSERT INTO t1 VALUES (0, 1);
 include/save_master_gtid.inc
 connection server_2;
+set @@sql_log_bin=0;
+call mtr.add_suppression("Unexpected break of being relay-logged GTID 1-1-32 event group by the current GTID event 0-1-4");
+set @@sql_log_bin=1;
+set @@global.debug_dbug="+d,slave_discard_xid_for_gtid_0_x_1000";
 include/start_slave.inc
 include/sync_with_master_gtid.inc
+set @@global.debug_dbug="";
 SELECT * FROM t1 ORDER BY a;
 a	b
 0	1
diff --git a/mysql-test/suite/rpl/t/rpl_parallel_temptable.test b/mysql-test/suite/rpl/t/rpl_parallel_temptable.test
index 04165ee4752..d444793a99d 100644
--- a/mysql-test/suite/rpl/t/rpl_parallel_temptable.test
+++ b/mysql-test/suite/rpl/t/rpl_parallel_temptable.test
@@ -201,9 +201,17 @@ INSERT INTO t1 VALUES (0, 1);
 # execution of format_description event will not wait infinitely
 # for a commit of the incomplete group that never happens.
 
+# Apart from the suppression, MDEV-27697 refinement to the original test needs
+# an allowance to one time accept malformed event group.
+set @@sql_log_bin=0;
+call mtr.add_suppression("Unexpected break of being relay-logged GTID 1-1-32 event group by the current GTID event 0-1-4");
+set @@sql_log_bin=1;
+set @@global.debug_dbug="+d,slave_discard_xid_for_gtid_0_x_1000";
+
 --source include/start_slave.inc
 #--sync_with_master
 --source include/sync_with_master_gtid.inc
+set @@global.debug_dbug="";
 
 SELECT * FROM t1 ORDER BY a;
 SHOW STATUS LIKE 'Slave_open_temp_tables';
diff --git a/sql/slave.cc b/sql/slave.cc
index 31e50753c9e..0d50e8b0c61 100644
--- a/sql/slave.cc
+++ b/sql/slave.cc
@@ -6223,8 +6223,10 @@ static int queue_event(Master_info* mi,const char* buf, ulong event_len)
       DBUG_EXECUTE_IF("slave_discard_xid_for_gtid_0_x_1000",
       {
         /* Inject an event group that is missing its XID commit event. */
-        if (mi->last_queued_gtid.domain_id == 0 &&
-            mi->last_queued_gtid.seq_no == 1000)
+        if ((mi->last_queued_gtid.domain_id == 0 &&
+             mi->last_queued_gtid.seq_no == 1000) ||
+            (mi->last_queued_gtid.domain_id == 1 &&
+             mi->last_queued_gtid.seq_no == 32))
         {
           sql_print_warning(
             "Unexpected break of being relay-logged GTID %u-%u-%llu "