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*** MDEV-6551: Some replication errors are ignored if slave_parallel_threads > 0 ***
include/master-slave.inc
[connection master]
connection server_2;
include/stop_slave.inc
SET @old_parallel_threads=@@GLOBAL.slave_parallel_threads;
SET @old_parallel_mode=@@GLOBAL.slave_parallel_mode;
SET GLOBAL slave_parallel_threads=1;
CHANGE MASTER TO master_use_gtid=slave_pos;
CALL mtr.add_suppression("Commit failed due to failure of an earlier commit on which this one depends");
include/start_slave.inc
connection server_1;
ALTER TABLE mysql.gtid_slave_pos ENGINE=InnoDB;
CREATE TABLE t2 (a int PRIMARY KEY) ENGINE=InnoDB;
SET gtid_domain_id=1;
INSERT INTO t2 VALUES (1);
SET gtid_domain_id=0;
SET gtid_domain_id=2;
INSERT INTO t2 VALUES (2);
SET gtid_domain_id=0;
INSERT INTO t2 VALUES (31);
include/save_master_gtid.inc
connection server_2;
include/sync_with_master_gtid.inc
include/stop_slave.inc
SET GLOBAL slave_parallel_threads= 0;
include/start_slave.inc
SET sql_log_bin= 0;
INSERT INTO t2 VALUES (32);
SET sql_log_bin= 1;
connection server_1;
INSERT INTO t2 VALUES (32);
FLUSH LOGS;
INSERT INTO t2 VALUES (33);
INSERT INTO t2 VALUES (34);
SELECT * FROM t2 WHERE a >= 30 ORDER BY a;
a
31
32
33
34
include/save_master_gtid.inc
connection server_2;
include/wait_for_slave_sql_error.inc [errno=1062]
connection server_2;
include/stop_slave_io.inc
SET GLOBAL slave_parallel_threads=10;
START SLAVE;
include/wait_for_slave_sql_error.inc [errno=1062]
START SLAVE SQL_THREAD;
include/wait_for_slave_sql_error.inc [errno=1062]
SELECT * FROM t2 WHERE a >= 30 ORDER BY a;
a
31
32
SET sql_slave_skip_counter= 1;
ERROR HY000: When using parallel replication and GTID with multiple replication domains, @@sql_slave_skip_counter can not be used. Instead, setting @@gtid_slave_pos explicitly can be used to skip to after a given GTID position
include/stop_slave_io.inc
include/start_slave.inc
include/sync_with_master_gtid.inc
SELECT * FROM t2 WHERE a >= 30 ORDER BY a;
a
31
32
33
34
connection server_2;
include/stop_slave.inc
SET GLOBAL slave_parallel_threads=@old_parallel_threads;
SET GLOBAL slave_parallel_mode=@old_parallel_mode;
include/start_slave.inc
connection server_1;
DROP TABLE t2;
include/rpl_end.inc