DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (k INT NOT NULL, a INT NOT NULL, b INT NOT NULL, c INT NOT NULL, PRIMARY KEY(k)) ENGINE=InnoDB;
INSERT INTO t1 (k, a, b, c) VALUES (1, 0, 0, 0);
INSERT INTO t1 (k, a, b, c) VALUES (2, 0, 0, 0);
INSERT INTO t1 (k, a, b, c) VALUES (3, 0, 0, 0);
INSERT INTO t1 (k, a, b, c) VALUES (4, 0, 0, 0);
RESET MASTER;
SET DEBUG_SYNC= 'RESET';
# Connection c1
SET binlog_format= mixed;
BEGIN;
UPDATE t1 SET a=10 WHERE k=1;
SET DEBUG_SYNC="commit_after_release_LOCK_prepare_ordered SIGNAL c1_prepared WAIT_FOR c2_committing";
COMMIT;
# Connection c2
SET binlog_format= mixed;
SET DEBUG_SYNC="now WAIT_FOR c1_prepared";
BEGIN;
SELECT * FROM t1 WHERE k=1 FOR UPDATE;
k	a	b	c
1	10	0	0
UPDATE t1 SET a=20 WHERE k=1;
SET DEBUG_SYNC="now SIGNAL c2_committing";
COMMIT;
# Connection c1
BEGIN;
UPDATE t1 SET a=10 WHERE k=2;
SET DEBUG_SYNC="commit_after_release_LOCK_prepare_ordered SIGNAL c1_prepared WAIT_FOR c2_committed TIMEOUT 2";
COMMIT;
# Connection c2
SET DEBUG_SYNC="now WAIT_FOR c1_prepared";
BEGIN;
SELECT * FROM t1 WHERE k=2 FOR UPDATE;
k	a	b	c
2	10	0	0
UPDATE t1 SET a=20 WHERE k=2;
SET DEBUG_SYNC="binlog_after_log_and_order SIGNAL c2_committed";
COMMIT;
# Connection c1
# This should warn about DEBUG_SYNC timeout
Warnings:
Warning	1639	debug sync point wait timed out
# Connection c2
SHOW BINLOG EVENTS LIMIT 2,12;
Log_name	Pos	Event_type	Server_id	End_log_pos	Info
master-bin.000001	#	Query	1	#	use `test`; UPDATE t1 SET a=10 WHERE k=1
master-bin.000001	#	Xid	1	#	COMMIT /* xid=XX */
master-bin.000001	#	Query	1	#	BEGIN
master-bin.000001	#	Query	1	#	use `test`; UPDATE t1 SET a=20 WHERE k=1
master-bin.000001	#	Xid	1	#	COMMIT /* xid=XX */
master-bin.000001	#	Query	1	#	BEGIN
master-bin.000001	#	Query	1	#	use `test`; UPDATE t1 SET a=10 WHERE k=2
master-bin.000001	#	Xid	1	#	COMMIT /* xid=XX */
master-bin.000001	#	Query	1	#	BEGIN
master-bin.000001	#	Query	1	#	use `test`; UPDATE t1 SET a=20 WHERE k=2
master-bin.000001	#	Xid	1	#	COMMIT /* xid=XX */
# Connection c1
RESET MASTER;
SET DEBUG_SYNC="commit_after_release_LOCK_prepare_ordered SIGNAL c1_prepared WAIT_FOR c2_committing";
UPDATE t1 SET a=10 WHERE k=3;
# Connection c2
SET DEBUG_SYNC="now WAIT_FOR c1_prepared";
SELECT * FROM t1 WHERE k=3 FOR UPDATE;
k	a	b	c
3	10	0	0
SET DEBUG_SYNC="commit_after_release_LOCK_prepare_ordered SIGNAL c2_committing";
UPDATE t1 SET a=20 WHERE k=3;
# Connection c1
SET DEBUG_SYNC="commit_after_release_LOCK_prepare_ordered SIGNAL c1_prepared WAIT_FOR c2_committed TIMEOUT 2";
UPDATE t1 SET a=10 WHERE k=4;
# Connection c2
SET DEBUG_SYNC="now WAIT_FOR c1_prepared";
SELECT * FROM t1 WHERE k=4 FOR UPDATE;
k	a	b	c
4	10	0	0
SET DEBUG_SYNC="binlog_after_log_and_order SIGNAL c2_committed";
UPDATE t1 SET a=20 WHERE k=4;
# Connection c1
# This should warn about DEBUG_SYNC timeout
Warnings:
Warning	1639	debug sync point wait timed out
# Connection c2
SHOW BINLOG EVENTS LIMIT 1,12;
Log_name	Pos	Event_type	Server_id	End_log_pos	Info
master-bin.000001	#	Query	1	#	BEGIN
master-bin.000001	#	Query	1	#	use `test`; UPDATE t1 SET a=10 WHERE k=3
master-bin.000001	#	Xid	1	#	COMMIT /* xid=XX */
master-bin.000001	#	Query	1	#	BEGIN
master-bin.000001	#	Query	1	#	use `test`; UPDATE t1 SET a=20 WHERE k=3
master-bin.000001	#	Xid	1	#	COMMIT /* xid=XX */
master-bin.000001	#	Query	1	#	BEGIN
master-bin.000001	#	Query	1	#	use `test`; UPDATE t1 SET a=10 WHERE k=4
master-bin.000001	#	Xid	1	#	COMMIT /* xid=XX */
master-bin.000001	#	Query	1	#	BEGIN
master-bin.000001	#	Query	1	#	use `test`; UPDATE t1 SET a=20 WHERE k=4
master-bin.000001	#	Xid	1	#	COMMIT /* xid=XX */
SELECT * FROM t1 ORDER BY k;
k	a	b	c
1	20	0	0
2	20	0	0
3	20	0	0
4	20	0	0
DROP TABLE t1;
SET DEBUG_SYNC= 'RESET';