SET GLOBAL innodb_flush_log_at_trx_commit=3; CREATE TABLE t1 (a INT PRIMARY KEY) ENGINE=innodb; INSERT INTO t1 VALUES (0); SET DEBUG_SYNC= "commit_after_get_LOCK_log SIGNAL con1_waiting WAIT_FOR con3_queued"; SET DEBUG_SYNC= "commit_loop_entry_commit_ordered SIGNAL con1_loop WAIT_FOR con1_loop_cont EXECUTE 3"; INSERT INTO t1 VALUES (1); SET DEBUG_SYNC= "now WAIT_FOR con1_waiting"; SET DEBUG_SYNC= "commit_after_prepare_ordered SIGNAL con2_queued"; INSERT INTO t1 VALUES (2); SET DEBUG_SYNC= "now WAIT_FOR con2_queued"; SET DEBUG_SYNC= "commit_after_prepare_ordered SIGNAL con3_queued"; INSERT INTO t1 VALUES (3); SET DEBUG_SYNC= "now WAIT_FOR con1_loop"; SET DEBUG_SYNC= "now SIGNAL con1_loop_cont"; SET DEBUG_SYNC= "now WAIT_FOR con1_loop"; SET DEBUG_SYNC= "now SIGNAL con1_loop_cont"; SET DEBUG_SYNC= "now WAIT_FOR con1_loop"; SELECT * FROM t1 ORDER BY a; a 0 1 2 SET SESSION debug_dbug="+d,crash_dispatch_command_before"; SELECT 1; Got one of the listed errors Got one of the listed errors Got one of the listed errors SELECT * FROM t1 ORDER BY a; a 0 1 2 3 InnoDB: Last MySQL binlog file position 0 947, file name ./master-bin.000001 SET DEBUG_SYNC= 'RESET'; DROP TABLE t1;