*** MDEV-8031: Parallel replication stops on "connection killed" error (probably incorrectly handled deadlock kill) ***
include/master-slave.inc
[connection master]
connection server_2;
SET @old_parallel_threads=@@GLOBAL.slave_parallel_threads;
include/stop_slave.inc
SET GLOBAL slave_parallel_threads=10;
CHANGE MASTER TO master_use_gtid=slave_pos;
include/start_slave.inc
connection server_1;
ALTER TABLE mysql.gtid_slave_pos ENGINE=InnoDB;
CREATE TABLE t3 (a INT PRIMARY KEY, b INT) ENGINE=InnoDB;
INSERT INTO t3 VALUES (201,0), (202,0);
include/save_master_gtid.inc
connection server_2;
include/sync_with_master_gtid.inc
include/stop_slave.inc
SET @old_dbug= @@GLOBAL.debug_dbug;
SET GLOBAL debug_dbug= '+d,inject_mdev8031';
connection server_1;
SET @old_dbug= @@SESSION.debug_dbug;
SET SESSION debug_dbug="+d,binlog_force_commit_id";
SET @commit_id= 10200;
INSERT INTO t3 VALUES (203, 1);
INSERT INTO t3 VALUES (204, 1);
INSERT INTO t3 VALUES (205, 1);
UPDATE t3 SET b=b+1 WHERE a=201;
UPDATE t3 SET b=b+1 WHERE a=201;
UPDATE t3 SET b=b+1 WHERE a=201;
UPDATE t3 SET b=b+1 WHERE a=202;
UPDATE t3 SET b=b+1 WHERE a=202;
UPDATE t3 SET b=b+1 WHERE a=202;
UPDATE t3 SET b=b+1 WHERE a=202;
UPDATE t3 SET b=b+1 WHERE a=203;
UPDATE t3 SET b=b+1 WHERE a=203;
UPDATE t3 SET b=b+1 WHERE a=204;
UPDATE t3 SET b=b+1 WHERE a=204;
UPDATE t3 SET b=b+1 WHERE a=204;
UPDATE t3 SET b=b+1 WHERE a=203;
UPDATE t3 SET b=b+1 WHERE a=205;
UPDATE t3 SET b=b+1 WHERE a=205;
SET SESSION debug_dbug=@old_dbug;
SELECT * FROM t3 WHERE a>=200 ORDER BY a;
a	b
201	3
202	4
203	4
204	4
205	3
include/save_master_gtid.inc
connection server_2;
include/start_slave.inc
include/sync_with_master_gtid.inc
SELECT * FROM t3 WHERE a>=200 ORDER BY a;
a	b
201	3
202	4
203	4
204	4
205	3
include/stop_slave.inc
SET GLOBAL debug_dbug= @old_dbug;
include/start_slave.inc
*** Check getting deadlock killed inside open_binlog() during retry. ***
connection server_2;
include/stop_slave.inc
SET @old_dbug= @@GLOBAL.debug_dbug;
SET GLOBAL debug_dbug= '+d,inject_retry_event_group_open_binlog_kill';
SET @old_max= @@GLOBAL.max_relay_log_size;
SET GLOBAL max_relay_log_size= 4096;
connection server_1;
SET @old_dbug= @@SESSION.debug_dbug;
SET SESSION debug_dbug="+d,binlog_force_commit_id";
SET @commit_id= 10210;
Omit long queries that cause relaylog rotations and transaction retries...
SET SESSION debug_dbug=@old_dbug;
SELECT * FROM t3 WHERE a>=200 ORDER BY a;
a	b
201	6
202	8
203	7
204	7
205	5
include/save_master_gtid.inc
connection server_2;
include/start_slave.inc
include/sync_with_master_gtid.inc
SELECT * FROM t3 WHERE a>=200 ORDER BY a;
a	b
201	6
202	8
203	7
204	7
205	5
include/stop_slave.inc
SET GLOBAL debug_dbug= @old_debg;
SET GLOBAL max_relay_log_size= @old_max;
SET GLOBAL slave_parallel_threads=@old_parallel_threads;
include/start_slave.inc
connection server_1;
DROP TABLE t3;
include/rpl_end.inc