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# # Test that the wsrep_var_OSU_method variable can be changed in the middle of an ALTER without adverse effects. # In-depth testing of various OSU methods is implemented in separate tests. # --source include/galera_cluster.inc --source include/have_innodb.inc --source include/have_debug_sync.inc CREATE TABLE t1 (f1 INTEGER PRIMARY KEY) Engine=InnoDB; --connection node_1 SET SESSION wsrep_OSU_method = "TOI"; SET DEBUG_SYNC = 'alter_table_before_open_tables WAIT_FOR continue'; --send ALTER TABLE t1 ADD COLUMN f2 INTEGER; --connect node_1a, 127.0.0.1, root, , test, $NODE_MYPORT_1 --connection node_1a SET SESSION wsrep_sync_wait = 0; --let $wait_condition = SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.PROCESSLIST WHERE STATE = 'debug sync point: alter_table_before_open_tables' --source include/wait_condition.inc SET GLOBAL wsrep_OSU_method = "RSU"; SET DEBUG_SYNC= 'now SIGNAL continue'; --connection node_1 --reap SELECT COUNT(*) = 2 FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 't1'; INSERT INTO t1 VALUES (1,2); --connection node_2 # The ALTER above is visible on node_2 SELECT COUNT(*) = 2 FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 't1'; INSERT INTO t1 VALUES (3,4); --connection node_1 SET GLOBAL wsrep_OSU_method = "TOI"; DROP TABLE t1; SET DEBUG_SYNC= 'RESET'; --connection node_1a SET DEBUG_SYNC= 'RESET';