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include/rpl_init.inc [topology=1->2]
*** MDEV-5509: Incorrect value for Seconds_Behind_Master if parallel replication ***
SET @old_parallel_threads=@@GLOBAL.slave_parallel_threads;
include/stop_slave.inc
SET GLOBAL slave_parallel_threads=5;
include/start_slave.inc
CREATE TABLE t1 (a INT PRIMARY KEY, b INT);
CALL mtr.add_suppression("Unsafe statement written to the binary log using statement format since BINLOG_FORMAT = STATEMENT. Statement is unsafe because it uses a system function that may return a different value on the slave");
INSERT INTO t1 VALUES (1,sleep(2));
Warnings:
Note 1592 Unsafe statement written to the binary log using statement format since BINLOG_FORMAT = STATEMENT. Statement is unsafe because it uses a system function that may return a different value on the slave.
include/wait_for_slave_param.inc [Seconds_Behind_Master]
Seconds_Behind_Master should be zero here because the slave is fully caught up and idle.
Seconds_Behind_Master = '0'
*** MDEV-8294: Inconsistent behavior of slave parallel threads at runtime ***
INSERT INTO t1 VALUES (10,0);
SET sql_log_bin= 0;
DELETE FROM t1 WHERE a=10;
SET sql_log_bin= 1;
INSERT INTO t1 VALUES (10,0);
SELECT * FROM t1 WHERE a >= 10 ORDER BY a;
a b
10 0
include/wait_for_slave_sql_error.inc [errno=1062]
SET GLOBAL slave_parallel_threads=8;
STOP SLAVE;
SET GLOBAL sql_slave_skip_counter= 1;
include/start_slave.inc
SELECT * FROM t1 WHERE a >= 10 ORDER BY a;
a b
10 0
*** MDEV-7818: Deadlock occurring with parallel replication and FTWRL ***
CREATE TABLE t2 (a INT PRIMARY KEY, b INT) ENGINE=InnoDB;
INSERT INTO t2 VALUES (1,0), (2,0), (3,0);
include/stop_slave.inc
SET @old_dbug= @@SESSION.debug_dbug;
SET @commit_id= 4242;
SET SESSION debug_dbug="+d,binlog_force_commit_id";
BEGIN;
UPDATE t2 SET b=b+1 WHERE a=2;
COMMIT;
BEGIN;
INSERT INTO t2 VALUES (4,10);
COMMIT;
SET SESSION debug_dbug= @old_dbug;
INSERT INTO t2 VALUES (5,0);
INSERT INTO t2 VALUES (6,0);
INSERT INTO t2 VALUES (7,0);
INSERT INTO t2 VALUES (8,0);
INSERT INTO t2 VALUES (9,0);
INSERT INTO t2 VALUES (10,0);
INSERT INTO t2 VALUES (11,0);
INSERT INTO t2 VALUES (12,0);
INSERT INTO t2 VALUES (13,0);
INSERT INTO t2 VALUES (14,0);
INSERT INTO t2 VALUES (15,0);
INSERT INTO t2 VALUES (16,0);
INSERT INTO t2 VALUES (17,0);
INSERT INTO t2 VALUES (18,0);
INSERT INTO t2 VALUES (19,0);
BEGIN;
SELECT * FROM t2 WHERE a=2 FOR UPDATE;
a b
2 0
include/start_slave.inc
FLUSH TABLES WITH READ LOCK;
COMMIT;
STOP SLAVE;
SELECT * FROM t2 ORDER BY a;
a b
1 0
2 1
3 0
4 10
5 0
6 0
7 0
8 0
9 0
10 0
11 0
12 0
13 0
14 0
15 0
16 0
17 0
18 0
19 0
UNLOCK TABLES;
SELECT "after UNLOCK TABLES" as state;
state
after UNLOCK TABLES
SELECT "after reap of STOP SLAVE" as state;
state
after reap of STOP SLAVE
include/wait_for_slave_to_stop.inc
include/start_slave.inc
SELECT * FROM t2 ORDER BY a;
a b
1 0
2 1
3 0
4 10
5 0
6 0
7 0
8 0
9 0
10 0
11 0
12 0
13 0
14 0
15 0
16 0
17 0
18 0
19 0
*** MDEV-8318: Assertion `!pool->busy' failed in pool_mark_busy(rpl_parallel_thread_pool*) on concurrent FTWRL ***
LOCK TABLE t2 WRITE;
FLUSH TABLES WITH READ LOCK;
FLUSH TABLES WITH READ LOCK;
KILL QUERY CID;
ERROR 70100: Query execution was interrupted
UNLOCK TABLES;
UNLOCK TABLES;
include/stop_slave.inc
SET GLOBAL slave_parallel_threads=@old_parallel_threads;
include/start_slave.inc
DROP TABLE t1, t2;
include/rpl_end.inc
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