connection node_1;
connection node_2;
connection node_1;
set GLOBAL wsrep_slave_threads=26;
CREATE TABLE t1 (f1 INTEGER) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1);
INSERT INTO t1 (f1) SELECT * from t1 as x1;
connection node_2;
set GLOBAL wsrep_slave_threads=16;
SET GLOBAL wsrep_provider='none';
INSERT INTO t1 VALUES (2);
connection node_1;
INSERT INTO t1 VALUES (3);
connection node_2;
INSERT INTO t1 VALUES (4);
set GLOBAL wsrep_slave_threads=5;
SELECT COUNT(*) = 5 FROM t1;
COUNT(*) = 5
1
connection node_1;
set GLOBAL wsrep_slave_threads=12;
SELECT COUNT(*) = 4 FROM t1;
COUNT(*) = 4
1
INSERT INTO t1 VALUES (100), (101), (102);
connection node_2;
set GLOBAL wsrep_slave_threads=5;
INSERT INTO t1 (f1) SELECT * from t1 as x1;
show global variables like 'wsrep_slave_threads';
Variable_name	Value
wsrep_slave_threads	5
SET GLOBAL wsrep_slave_threads = 1;
SELECT COUNT(*) FROM t1;
COUNT(*)
16
connection node_1;
SELECT COUNT(*) FROM t1;
COUNT(*)
15
show global variables like 'wsrep_slave_threads';
Variable_name	Value
wsrep_slave_threads	12
SET GLOBAL wsrep_slave_threads = 1;
DROP TABLE t1;