include/rpl_init.inc [topology=1->2]
*** Test retry of transactions that fail to replicate due to deadlock or similar temporary error. ***
connection server_1;
ALTER TABLE mysql.gtid_slave_pos ENGINE=InnoDB;
CREATE TABLE t1 (a int PRIMARY KEY, b INT) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1,1);
SET sql_log_bin=0;
CREATE FUNCTION foo(x INT, d1 VARCHAR(500), d2 VARCHAR(500))
RETURNS INT DETERMINISTIC
BEGIN
RETURN x;
END
||
SET sql_log_bin=1;
connection server_2;
SET @old_parallel_threads=@@GLOBAL.slave_parallel_threads;
include/stop_slave.inc
SET GLOBAL slave_parallel_threads=5;
include/start_slave.inc
SET sql_log_bin=0;
CREATE FUNCTION foo(x INT, d1 VARCHAR(500), d2 VARCHAR(500))
RETURNS INT DETERMINISTIC
BEGIN
IF d1 != '' THEN
SET debug_sync = d1;
END IF;
IF d2 != '' THEN
SET debug_sync = d2;
END IF;
RETURN x;
END
||
SET sql_log_bin=1;
include/stop_slave.inc
connection server_1;
SET gtid_seq_no = 100;
BEGIN;
INSERT INTO t1 VALUES (2,1);
UPDATE t1 SET b=b+1 WHERE a=1;
INSERT INTO t1 VALUES (3,1);
COMMIT;
SELECT * FROM t1 ORDER BY a;
a	b
1	2
2	1
3	1
connection server_2;
SET @old_dbug= @@GLOBAL.debug_dbug;
SET GLOBAL debug_dbug="+d,rpl_parallel_simulate_temp_err_gtid_0_x_100";
include/start_slave.inc
SET GLOBAL debug_dbug=@old_dbug;
retries
1
SELECT * FROM t1 ORDER BY a;
a	b
1	2
2	1
3	1
*** Test that double retry works when the first retry also fails with temp error ***
include/stop_slave.inc
connection server_1;
SET gtid_seq_no = 100;
SET @old_server_id = @@server_id;
SET server_id = 10;
BEGIN;
INSERT INTO t1 VALUES (4,1);
UPDATE t1 SET b=b+1 WHERE a=1;
INSERT INTO t1 VALUES (5,1);
INSERT INTO t1 VALUES (6,1);
COMMIT;
SET server_id = @old_server_id;
SELECT * FROM t1 ORDER BY a;
a	b
1	3
2	1
3	1
4	1
5	1
6	1
connection server_2;
SET @old_dbug= @@GLOBAL.debug_dbug;
SET GLOBAL debug_dbug="+d,rpl_parallel_simulate_temp_err_gtid_0_x_100,rpl_parallel_simulate_double_temp_err_gtid_0_x_100";
include/start_slave.inc
SET GLOBAL debug_dbug=@old_dbug;
retries
2
SELECT * FROM t1 ORDER BY a;
a	b
1	3
2	1
3	1
4	1
5	1
6	1
*** Test too many retries, eventually causing failure. ***
include/stop_slave.inc
connection server_1;
SET gtid_seq_no = 100;
SET @old_server_id = @@server_id;
SET server_id = 11;
BEGIN;
INSERT INTO t1 VALUES (7,1);
UPDATE t1 SET b=b+1 WHERE a=1;
INSERT INTO t1 VALUES (8,1);
INSERT INTO t1 VALUES (9,1);
COMMIT;
SET server_id = @old_server_id;
SELECT * FROM t1 ORDER BY a;
a	b
1	4
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
connection server_2;
SET sql_log_bin=0;
CALL mtr.add_suppression("Slave worker thread retried transaction 10 time\\(s\\) in vain, giving up");
CALL mtr.add_suppression("Slave: Deadlock found when trying to get lock; try restarting transaction");
CALL mtr.add_suppression("Slave worker thread retried transaction .* in vain, giving up");
SET sql_log_bin=1;
SET @old_dbug= @@GLOBAL.debug_dbug;
SET GLOBAL debug_dbug="+d,rpl_parallel_simulate_temp_err_gtid_0_x_100,rpl_parallel_simulate_infinite_temp_err_gtid_0_x_100";
START SLAVE;
include/wait_for_slave_sql_error.inc [errno=1213]
SET GLOBAL debug_dbug=@old_dbug;
retries
10
SELECT * FROM t1 ORDER BY a;
a	b
1	3
2	1
3	1
4	1
5	1
6	1
STOP SLAVE IO_THREAD;
include/start_slave.inc
SELECT * FROM t1 ORDER BY a;
a	b
1	4
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
*** Test retry of event group that spans multiple relay log files. ***
connection server_1;
CREATE TABLE t2 (a int PRIMARY KEY, b BLOB) ENGINE=InnoDB;
INSERT INTO t2 VALUES (1,"Hulubullu");
connection server_2;
include/stop_slave.inc
SET @old_max= @@GLOBAL.max_relay_log_size;
SET GLOBAL max_relay_log_size=4096;
connection server_1;
SET gtid_seq_no = 100;
SET @old_server_id = @@server_id;
SET server_id = 12;
BEGIN;
INSERT INTO t1 VALUES (10, 4);
COMMIT;
SET server_id = @old_server_id;
SELECT * FROM t1 WHERE a >= 10 ORDER BY a;
a	b
10	4
SELECT a, LENGTH(b) FROM t2 ORDER BY a;
a	LENGTH(b)
1	9
2	5006
3	5012
connection server_2;
SET @old_dbug= @@GLOBAL.debug_dbug;
SET GLOBAL debug_dbug="+d,rpl_parallel_simulate_temp_err_gtid_0_x_100";
include/start_slave.inc
SET GLOBAL debug_dbug=@old_dbug;
retries
1
SELECT * FROM t1 WHERE a >= 10 ORDER BY a;
a	b
10	4
SELECT a, LENGTH(b) FROM t2 ORDER BY a;
a	LENGTH(b)
1	9
2	5006
3	5012
connection server_1;
INSERT INTO t1 VALUES (11,11);
connection server_2;
SELECT * FROM t1 WHERE a >= 10 ORDER BY a;
a	b
10	4
11	11
SELECT a, LENGTH(b) FROM t2 ORDER BY a;
a	LENGTH(b)
1	9
2	5006
3	5012
4	5000
SET GLOBAL max_relay_log_size=@old_max;
*** MDEV-7065: Incorrect relay log position in parallel replication after retry of transaction ***
connection server_2;
include/stop_slave.inc
connection server_1;
BEGIN;
INSERT INTO t1 VALUES (100, 0);
INSERT INTO t1 VALUES (101, 0);
INSERT INTO t1 VALUES (102, 0);
INSERT INTO t1 VALUES (103, 0);
COMMIT;
SELECT * FROM t1 WHERE a >= 100 ORDER BY a;
a	b
100	0
101	0
102	0
103	0
connection server_2;
SET @old_dbug= @@GLOBAL.debug_dbug;
SET GLOBAL debug_dbug="+d,rpl_parallel_simulate_temp_err_xid";
include/start_slave.inc
SET GLOBAL debug_dbug=@old_dbug;
retries
1
SELECT * FROM t1 WHERE a >= 100 ORDER BY a;
a	b
100	0
101	0
102	0
103	0
include/stop_slave_sql.inc
connection server_1;
INSERT INTO t1 VALUES (104, 1);
INSERT INTO t1 VALUES (105, 1);
INSERT INTO t1 VALUES (106, 1);
INSERT INTO t1 VALUES (107, 1);
INSERT INTO t1 VALUES (108, 1);
INSERT INTO t1 VALUES (109, 1);
connection server_2;
include/start_slave.inc
SELECT * FROM t1 WHERE a >= 100 ORDER BY a;
a	b
100	0
101	0
102	0
103	0
104	1
105	1
106	1
107	1
108	1
109	1
*** MDEV-6917: Parallel replication: "Commit failed due to failure of an earlier commit on which this one depends", but no prior failure seen **
connection server_1;
CREATE TABLE t3 (a INT PRIMARY KEY, b INT, KEY b_idx(b)) ENGINE=InnoDB;
INSERT INTO t3 VALUES (1,NULL), (2,2), (3,NULL), (4,4), (5, NULL), (6, 6);
CREATE TABLE t4 (a INT PRIMARY KEY, b INT) ENGINE=InnoDB;
SET @old_format= @@SESSION.binlog_format;
SET binlog_format='statement';
connection server_2;
include/stop_slave.inc
CHANGE MASTER TO master_use_gtid=no;
connection server_1;
connect  con1,127.0.0.1,root,,test,$SERVER_MYPORT_1,;
SET @old_format= @@SESSION.binlog_format;
SET binlog_format='statement';
BEGIN;
INSERT INTO t4 VALUES (10, foo(1, 'before_execute_sql_command WAIT_FOR t1_start', ''));
UPDATE t3 SET b=NULL WHERE a=6;
SET debug_sync='commit_after_release_LOCK_prepare_ordered SIGNAL master_queued1 WAIT_FOR master_cont1';
COMMIT;
connection server_1;
SET debug_sync='now WAIT_FOR master_queued1';
connect  con2,127.0.0.1,root,,test,$SERVER_MYPORT_1,;
SET @old_format= @@SESSION.binlog_format;
SET binlog_format='statement';
BEGIN;
INSERT INTO t4 VALUES (20, foo(2, 'group_commit_waiting_for_prior SIGNAL t2_waiting', ''));
DELETE FROM t3 WHERE b <= 3;
SET debug_sync='commit_after_release_LOCK_prepare_ordered SIGNAL master_queued2';
COMMIT;
connection server_1;
SET debug_sync='now WAIT_FOR master_queued2';
connect  con3,127.0.0.1,root,,test,$SERVER_MYPORT_1,;
SET @old_format= @@SESSION.binlog_format;
SET binlog_format='statement';
BEGIN;
INSERT INTO t4 VALUES (30, foo(3, 'before_execute_sql_command WAIT_FOR t3_start', 'group_commit_waiting_for_prior SIGNAL t3_waiting'));
INSERT INTO t3 VALUES (7,7);
SET debug_sync='commit_after_release_LOCK_prepare_ordered SIGNAL master_queued3';
COMMIT;
connection server_1;
SET debug_sync='now WAIT_FOR master_queued3';
SET debug_sync='now SIGNAL master_cont1';
connection con1;
SET binlog_format=@old_format;
connection con2;
SET binlog_format=@old_format;
connection con3;
SET debug_sync='RESET';
SET binlog_format=@old_format;
connection server_1;
SELECT * FROM t3 ORDER BY a;
a	b
1	NULL
3	NULL
4	4
5	NULL
6	NULL
7	7
connection server_2;
SET @old_dbug=@@GLOBAL.debug_dbug;
SET GLOBAL debug_dbug="+d,thd_need_ordering_with_force";
include/start_slave.inc
SET debug_sync='now WAIT_FOR t2_waiting';
SET debug_sync='now SIGNAL t3_start';
SET debug_sync='now WAIT_FOR t3_waiting';
SET debug_sync='now SIGNAL t1_start';
SET GLOBAL debug_dbug=@old_dbug;
SET debug_sync='RESET';
retries
1
SELECT * FROM t3 ORDER BY a;
a	b
1	NULL
3	NULL
4	4
5	NULL
6	NULL
7	7
connection server_1;
SET binlog_format=@old_format;
connection server_2;
include/stop_slave.inc
SET GLOBAL slave_parallel_threads=@old_parallel_threads;
include/start_slave.inc
connection server_1;
DROP TABLE t1, t2, t3, t4;
DROP function foo;
connection server_2;
connection server_1;
CREATE TABLE t1 (a int PRIMARY KEY, b INT) ENGINE=InnoDB;
connection server_2;
include/stop_slave.inc
SET @old_parallel_threads=@@GLOBAL.slave_parallel_threads;
SET @@GLOBAL.slave_parallel_threads=5;
SET @old_parallel_mode=@@GLOBAL.slave_parallel_mode;
SET @@GLOBAL.slave_parallel_mode='aggressive';
SET @old_lock_wait_timeout=@@GLOBAL.innodb_lock_wait_timeout;
SET @@GLOBAL.innodb_lock_wait_timeout=2;
SET @old_slave_transaction_retries=@@GLOBAL.slave_transaction_retries;
SET @@GLOBAL.slave_transaction_retries=1;
# Spoilers on the slave side causing temporary errors
connect  spoiler_21,127.0.0.1,root,,test,$SLAVE_MYPORT;
BEGIN;
INSERT INTO t1 SET a=1,b=2;
connect  spoiler_22,127.0.0.1,root,,test,$SLAVE_MYPORT;
BEGIN;
INSERT INTO t1 SET a=2,b=2;
# Master payload
connection server_1;
SET @@SESSION.GTID_SEQ_NO=1000;
INSERT INTO t1 SET a=1,b=1;
SET @@SESSION.GTID_SEQ_NO=1001;
INSERT INTO t1 SET a=2,b=1;
# Start slave whose both appliers is destined to being blocked
connection server_2;
SET @old_dbug= @@GLOBAL.debug_dbug;
SET @@GLOBAL.debug_dbug="+d,rpl_parallel_simulate_wait_at_retry";
include/start_slave.inc
# Make sure both workers are waiting at their sync points
# Signal to the 1st to proceed after it has reached termination state
SET @@DEBUG_SYNC='now SIGNAL proceed_by_1000';
connection spoiler_21;
ROLLBACK;
# Release the 2nd worker to proceed
connection spoiler_22;
ROLLBACK;
connection server_2;
SET @@DEBUG_SYNC='now SIGNAL proceed_by_1001';
# observe how it all ends
# Wait for the workers to go home and check the result of applying
# which is OK
connection server_2;
include/stop_slave.inc
SET @@GLOBAL.slave_parallel_threads=@old_parallel_threads;
SET @@GLOBAL.slave_parallel_mode=@old_parallel_mode;
SET @@GLOBAL.innodb_lock_wait_timeout=@old_lock_wait_timeout;
SET @@GLOBAL.slave_transaction_retries=@old_slave_transaction_retries;
SET @@GLOBAL.debug_dbug=@old_dbug;
SET debug_sync='RESET';
include/start_slave.inc
connection server_1;
DROP TABLE t1;
connection server_2;
include/rpl_end.inc