# # Bug#69122 - INNODB DOESN'T REDO-LOG INSERT BUFFER MERGE # OPERATION IF IT IS DONE IN-PLACE # call mtr.add_suppression("InnoDB: innodb_read_only prevents crash recovery"); call mtr.add_suppression("Plugin initialization aborted at srv0start\\.cc"); call mtr.add_suppression("Plugin 'InnoDB'"); FLUSH TABLES; CREATE TABLE t1( a INT AUTO_INCREMENT PRIMARY KEY, b CHAR(1), c INT, INDEX(b)) ENGINE=InnoDB STATS_PERSISTENT=0; SET GLOBAL innodb_change_buffering_debug = 1; INSERT INTO t1 SELECT 0,'x',1 FROM seq_1_to_8192; BEGIN; SELECT b FROM t1 LIMIT 3; b x x x connect con1,localhost,root,,; BEGIN; DELETE FROM t1 WHERE a=1; INSERT INTO t1 VALUES(1,'X',1); SET DEBUG_DBUG='+d,crash_after_log_ibuf_upd_inplace'; SELECT b FROM t1 LIMIT 3; ERROR HY000: Lost connection to MySQL server during query disconnect con1; connection default; FOUND 1 /Wrote log record for ibuf update in place operation/ in mysqld.1.err # restart: --innodb-read-only CHECK TABLE t1; Table Op Msg_type Msg_text test.t1 check Error Unknown storage engine 'InnoDB' test.t1 check error Corrupt FOUND 1 /innodb_read_only prevents crash recovery/ in mysqld.1.err # restart: --innodb-force-recovery=5 SELECT * FROM t1 LIMIT 1; a b c 1 X 1 SHOW ENGINE INNODB STATUS; Type Name Status InnoDB insert 0, delete mark 0 SET GLOBAL innodb_fast_shutdown=0; # restart CHECK TABLE t1; Table Op Msg_type Msg_text test.t1 check status OK SHOW ENGINE INNODB STATUS; Type Name Status InnoDB DROP TABLE t1;