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connection node_1;
CREATE TABLE t1 (f1 INT PRIMARY KEY) Engine=InnoDB;
CREATE TABLE t2 (f1 INT AUTO_INCREMENT PRIMARY KEY) Engine=InnoDB;
connection node_2;
SET GLOBAL wsrep_slave_threads = 0;
Warnings:
Warning 1292 Truncated incorrect wsrep_slave_threads value: '0'
SHOW WARNINGS;
Level Code Message
Warning 1292 Truncated incorrect wsrep_slave_threads value: '0'
SELECT @@wsrep_slave_threads = 1;
@@wsrep_slave_threads = 1
1
SET GLOBAL wsrep_slave_threads = 1;
SELECT COUNT(*) FROM INFORMATION_SCHEMA.PROCESSLIST
WHERE USER = 'system user' AND STATE NOT LIKE 'InnoDB%';
COUNT(*)
2
SELECT COUNT(*) FROM INFORMATION_SCHEMA.PROCESSLIST WHERE USER = 'system user' AND STATE LIKE '%wsrep aborter%';
COUNT(*)
1
SET GLOBAL wsrep_slave_threads = 64;
connection node_1;
INSERT INTO t1 VALUES (1);
connection node_2;
SELECT COUNT(*) FROM t1;
COUNT(*)
1
SELECT COUNT(*) - @@wsrep_slave_threads FROM INFORMATION_SCHEMA.PROCESSLIST
WHERE USER = 'system user' AND STATE NOT LIKE 'InnoDB%';
COUNT(*) - @@wsrep_slave_threads
1
SELECT COUNT(*) FROM INFORMATION_SCHEMA.PROCESSLIST WHERE USER = 'system user' AND STATE LIKE '%wsrep aborter%';
COUNT(*)
1
SET GLOBAL wsrep_slave_threads = 1;
connection node_1;
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
INSERT INTO t2 VALUES (DEFAULT);
connection node_2;
SELECT COUNT(*) FROM t2;
COUNT(*)
64
SELECT COUNT(*) - @@wsrep_slave_threads FROM INFORMATION_SCHEMA.PROCESSLIST
WHERE USER = 'system user' AND STATE NOT LIKE 'InnoDB%';
COUNT(*) - @@wsrep_slave_threads
1
SELECT COUNT(*) FROM INFORMATION_SCHEMA.PROCESSLIST WHERE USER = 'system user' AND STATE LIKE '%wsrep aborter%';
COUNT(*)
1
SET GLOBAL wsrep_slave_threads = 1;
DROP TABLE t1;
DROP TABLE t2;
#
# lp:1372840 - Changing wsrep_slave_threads causes future connections to hang
#
connection node_1;
CREATE TABLE t1 (i INT AUTO_INCREMENT PRIMARY KEY) ENGINE=INNODB;
connection node_2;
SET GLOBAL wsrep_slave_threads = 4;
SET GLOBAL wsrep_slave_threads = 1;
DROP TABLE t1;
# End of tests
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