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connection node_2;
connection node_1;
connection node_1;
connection node_2;
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;
CALL mtr.add_suppression("WSREP: Refusing exit for the last slave thread.");
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 COMMAND != 'Daemon';
COUNT(*)
3
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(*) FROM INFORMATION_SCHEMA.PROCESSLIST WHERE USER = 'system user' AND STATE LIKE '%wsrep aborter%';
COUNT(*)
1
SET GLOBAL wsrep_slave_threads = 1;
connection node_1;
connection node_2;
SELECT COUNT(*) FROM t2;
COUNT(*)
64
SELECT COUNT(*) FROM INFORMATION_SCHEMA.PROCESSLIST WHERE USER = 'system user' AND STATE LIKE '%wsrep aborter%';
COUNT(*)
1
SET GLOBAL wsrep_slave_threads = 5;
SET GLOBAL wsrep_slave_threads = 1;
connection node_2;
Shutting down server ...
connection node_1;
show status like 'wsrep_cluster_size';
Variable_name Value
wsrep_cluster_size 1
SET GLOBAL wsrep_slave_threads = 6;
SET GLOBAL wsrep_slave_threads = 1;
SET GLOBAL wsrep_cluster_address='';
SET GLOBAL wsrep_cluster_address='gcomm://';
SET GLOBAL wsrep_slave_threads = 10;
connection node_2;
SELECT COUNT(*) FROM INFORMATION_SCHEMA.PROCESSLIST WHERE USER = 'system user' AND COMMAND != 'Daemon';
COUNT(*)
3
connection node_1;
SET GLOBAL wsrep_slave_threads = 1;
connection node_2;
SET GLOBAL wsrep_slave_threads = 1;
connection node_1;
connection node_2;
SELECT COUNT(*) FROM t1;
COUNT(*)
1
SELECT COUNT(*) FROM t2;
COUNT(*)
192
connection node_1;
SELECT COUNT(*) FROM t1;
COUNT(*)
1
SELECT COUNT(*) FROM t2;
COUNT(*)
192
DROP TABLE t1;
DROP TABLE t2;
# End of tests
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