SET DEBUG_SYNC='RESET'; DROP TABLE IF EXISTS t1; CREATE TABLE t1 (c1 INT); INSERT INTO t1 VALUES (1); # # connection con1 START TRANSACTION; INSERT INTO t1 VALUES (2); # # connection default SET DEBUG_SYNC='mdl_acquire_lock_wait SIGNAL waiting'; TRUNCATE TABLE t1; # # connection con1 SET DEBUG_SYNC='now WAIT_FOR waiting'; KILL QUERY @id; # # connection default ERROR 70100: Query execution was interrupted # # connection con1 # Release SW lock by committing transaction. COMMIT; # # connection default UNLOCK TABLES; DROP TABLE t1; SET DEBUG_SYNC='RESET';