Concurrent CREATE TRIGGER statements mix up in binlog and break replication

--source include/master-slave.inc

CREATE TABLE t1 (a INT);

CREATE TABLE t2 (b INT);

--let $run= 100

--disable_abort_on_error

while ($run)

{

  --send

    CREATE TRIGGER tr AFTER INSERT ON t1 FOR EACH ROW SET @b = 1;

  --connection master1

  CREATE TRIGGER tr AFTER INSERT ON t2 FOR EACH ROW SET @b = 1;

  --connection master

  --reap  

  DROP TRIGGER IF EXISTS tr;

  --dec $run

}

--sync_slave_with_master

# Cleanup

--connection master

DROP TABLE t1, t2;

--source include/rpl_end.inc

master-bin.000001	653	Query	1	836	use `test`; CREATE DEFINER=`root`@`localhost` TRIGGER tr AFTER INSERT ON t1 FOR EACH ROW SET @b = 1

master-bin.000001	836	Gtid	1	878	GTID 0-1-4

master-bin.000001	878	Query	1	979	use `test`; DROP TRIGGER IF EXISTS tr

master-bin.000001	979	Gtid	1	1021	GTID 0-1-5

master-bin.000001	1021	Query	1	1204	use `test`; CREATE DEFINER=`root`@`localhost` TRIGGER tr AFTER INSERT ON t2 FOR EACH ROW SET @b = 1

master-bin.000001	1204	Gtid	1	1246	GTID 0-1-6

master-bin.000001	1246	Query	1	1429	use `test`; CREATE DEFINER=`root`@`localhost` TRIGGER tr AFTER INSERT ON t1 FOR EACH ROW SET @b = 1

master-bin.000001	1429	Gtid	1	1471	GTID 0-1-7

master-bin.000001	1471	Query	1	1572	use `test`; DROP TRIGGER IF EXISTS tr

2021-05-06  0:44:33 8 [ERROR] Slave SQL: Error 'Trigger 'test.tr' already exists' on query. Default database: 'test'. Query: 'CREATE DEFINER=`root`@`localhost` TRIGGER tr AFTER INSERT ON t1 FOR EACH ROW SET @b = 1', Gtid 0-1-6, Internal MariaDB error code: 1359

2021-05-06  0:44:33 8 [Warning] Slave: Trigger 'test.tr' already exists Error_code: 1359

commit d9fe53cfe71443c645862f62b389b4e7b56a5953

Author: Monty

Date:   Mon Mar 22 16:05:08 2021 +0200

    Check if we can rename triggers before doing an ALTER TABLE ... RENAME