# # BUG#40827 - Killing insert-select to MyISAM can cause table corruption # CREATE TABLE `t1` ( `id` BIGINT(20) , `id1` BIGINT(20) AUTO_INCREMENT, KEY(id1), KEY(id) ) ENGINE=MyISAM; CREATE TABLE `t2` ( `id` BIGINT(20) , `id1` BIGINT(20) AUTO_INCREMENT, KEY (id1), KEY(id) ) ENGINE=MyISAM; INSERT INTO t2 (id) VALUES (123); INSERT INTO t2 (id) SELECT id FROM t2; INSERT INTO t2 (id) SELECT id FROM t2; INSERT INTO t2 (id) SELECT id FROM t2; INSERT INTO t2 (id) SELECT id FROM t2; INSERT INTO t2 (id) SELECT id FROM t2; INSERT INTO t2 (id) SELECT id FROM t2; INSERT INTO t2 (id) SELECT id FROM t2; INSERT INTO t2 (id) SELECT id FROM t2; INSERT INTO t2 (id) SELECT id FROM t2; INSERT INTO t2 (id) SELECT id FROM t2; # Switch to insert Connection SET SESSION debug='+d,wait_in_enable_indexes'; # Send insert data INSERT INTO t1(id) SELECT id FROM t2; # Switch to default Connection # Wait for insert data to reach the debug point SELECT ID FROM INFORMATION_SCHEMA.PROCESSLIST WHERE STATE = 'wait_in_enable_indexes' AND INFO = "INSERT INTO t1(id) SELECT id FROM t2" INTO @thread_id; KILL QUERY @thread_id; CHECK TABLE t1; Table Op Msg_type Msg_text test.t1 check status OK DROP TABLE t1,t2;