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CREATE TABLE t1 (f1 INTEGER) ENGINE=InnoDB;
CREATE TABLE t2 (f1 INTEGER) ENGINE=InnoDB;
SET DEBUG_SYNC = 'alter_table_before_open_tables WAIT_FOR continue';
ALTER TABLE t1 ADD COLUMN f2 INTEGER;;
SET SESSION wsrep_sync_wait = 0;
SELECT COUNT(*) = 0 FROM t1;
COUNT(*) = 0
1
SELECT COUNT(*) = 0 FROM t2;
COUNT(*) = 0
1
INSERT INTO t1 VALUES (1);
Got one of the listed errors
SET AUTOCOMMIT=OFF;
START TRANSACTION;
INSERT INTO t2 VALUES (1);
COMMIT;;
SET SESSION wsrep_sync_wait = 0;
SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.PROCESSLIST WHERE INFO = 'Commit';
COUNT(*) = 1
1
SELECT COUNT(*) = 0 FROM t2;
COUNT(*) = 0
1
SET DEBUG_SYNC= 'now SIGNAL continue';
SELECT COUNT(*) = 0 FROM t1;
COUNT(*) = 0
1
SELECT COUNT(*) = 1 FROM t2;
COUNT(*) = 1
1
SELECT COUNT(*) = 0 FROM t1;
COUNT(*) = 0
1
SELECT COUNT(*) = 1 FROM t2;
COUNT(*) = 1
1
SET DEBUG_SYNC= 'RESET';
SET DEBUG_SYNC= 'RESET';
DROP TABLE t1;
DROP TABLE t2;
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