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connection node_1;
CREATE TABLE t1 (f1 INTEGER) Engine=InnoDB;
SET GLOBAL wsrep_slave_threads = 10;
# Set slave threads to 10 step 1
SET GLOBAL wsrep_slave_threads = 1;
connection node_2;
INSERT INTO t1 VALUES (1);
connection node_1;
SET SESSION wsrep_sync_wait=15;
SELECT COUNT(*) FROM t1;
COUNT(*)
1
SET GLOBAL wsrep_slave_threads = 10;
# Set slave threads to 10 step 2
SET GLOBAL wsrep_slave_threads = 20;
# Set slave threads to 20
SET GLOBAL wsrep_slave_threads = 1;
connection node_2;
INSERT INTO t1 VALUES (1);
INSERT INTO t1 VALUES (2);
INSERT INTO t1 VALUES (3);
INSERT INTO t1 VALUES (4);
INSERT INTO t1 VALUES (5);
INSERT INTO t1 VALUES (6);
INSERT INTO t1 VALUES (7);
INSERT INTO t1 VALUES (8);
INSERT INTO t1 VALUES (9);
INSERT INTO t1 VALUES (10);
connection node_1;
SET GLOBAL wsrep_slave_threads = 10;
SELECT COUNT(*) FROM t1;
COUNT(*)
11
# Set slave threads to 10 step 3
connection node_2;
INSERT INTO t1 VALUES (11);
INSERT INTO t1 VALUES (12);
INSERT INTO t1 VALUES (13);
INSERT INTO t1 VALUES (14);
INSERT INTO t1 VALUES (15);
INSERT INTO t1 VALUES (16);
INSERT INTO t1 VALUES (17);
INSERT INTO t1 VALUES (18);
INSERT INTO t1 VALUES (19);
INSERT INTO t1 VALUES (20);
connection node_1;
SELECT COUNT(*) FROM t1;
COUNT(*)
21
SET GLOBAL wsrep_slave_threads = 1;
DROP TABLE t1;
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