# # Bug#20015132 ALTER TABLE FAILS TO CHECK IF TABLE IS CORRUPTED # CREATE TABLE t1(c1 INT PRIMARY KEY, c2 CHAR(1), c3 INT UNSIGNED) ENGINE=InnoDB; SET @saved_debug_dbug = @@SESSION.debug_dbug; SET DEBUG_DBUG='+d,create_index_metadata_fail'; ALTER TABLE t1 ADD INDEX (c2), ADD INDEX (c3); ERROR HY000: The table 't1' is full SET DEBUG_DBUG='+d,ib_create_table_fail_too_many_trx'; ALTER TABLE t1 ADD INDEX (c2), ADD INDEX (c3); ERROR HY000: Too many active concurrent transactions SET DEBUG_DBUG=@saved_debug_dbug; ALTER TABLE t1 ADD INDEX (c2), ADD INDEX (c3); SET DEBUG_DBUG='+d,dict_set_index_corrupted'; CHECK TABLE t1; Table Op Msg_type Msg_text test.t1 check Warning InnoDB: Index c2 is marked as corrupted test.t1 check Warning InnoDB: Index c3 is marked as corrupted test.t1 check error Corrupt CHECK TABLE t1; Table Op Msg_type Msg_text test.t1 check Warning InnoDB: Index c2 is marked as corrupted test.t1 check Warning InnoDB: Index c3 is marked as corrupted test.t1 check error Corrupt ALTER TABLE t1 DROP INDEX c2; CHECK TABLE t1; Table Op Msg_type Msg_text test.t1 check Warning InnoDB: Index c3 is marked as corrupted test.t1 check error Corrupt ALTER TABLE t1 ADD INDEX (c2,c3); ERROR HY000: Index c3 is corrupted ALTER TABLE t1 CHANGE c3 c3 INT NOT NULL; CHECK TABLE t1; Table Op Msg_type Msg_text test.t1 check status OK ALTER TABLE t1 ADD INDEX (c2,c3); DROP TABLE t1; # # Bug #14669848 CRASH DURING ALTER MAKES ORIGINAL TABLE INACCESSIBLE # # -- Scenario 1: # Crash the server in ha_innobase::commit_inplace_alter_table() # just after committing the dictionary changes. CREATE TABLE t1 (f1 INT NOT NULL, f2 INT NOT NULL) ENGINE=innodb; INSERT INTO t1 VALUES (1,2),(3,4); SET DEBUG_DBUG='+d,innodb_alter_commit_crash_after_commit'; ALTER TABLE t1 ADD PRIMARY KEY (f2, f1); ERROR HY000: Lost connection to MySQL server during query # Restart mysqld after the crash and reconnect. SELECT * FROM information_schema.innodb_sys_tables WHERE table_id = ID; TABLE_ID NAME FLAG N_COLS SPACE FILE_FORMAT ROW_FORMAT ZIP_PAGE_SIZE SPACE_TYPE # Files in datadir after manual recovery. db.opt t1.frm t1.ibd SHOW TABLES; Tables_in_test t1 SHOW CREATE TABLE t1; Table Create Table t1 CREATE TABLE `t1` ( `f1` int(11) NOT NULL, `f2` int(11) NOT NULL, PRIMARY KEY (`f2`,`f1`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 INSERT INTO t1 VALUES (5,6),(7,8); SELECT * FROM t1; f1 f2 1 2 3 4 5 6 7 8 DROP TABLE t1; CREATE TABLE t1 (f1 INT NOT NULL, f2 INT NOT NULL) ENGINE=InnoDB; ALTER TABLE t1 ADD PRIMARY KEY (f2, f1); DROP TABLE t1; # -- Scenario 2: # Crash the server in ha_innobase::commit_inplace_alter_table() # just before committing the dictionary changes, but after # writing the MLOG_FILE_RENAME records. As the mini-transaction # is not committed, the renames will not be replayed. CREATE TABLE t2 (f1 int not null, f2 int not null) ENGINE=InnoDB; INSERT INTO t2 VALUES (1,2),(3,4); SET DEBUG_DBUG='+d,innodb_alter_commit_crash_before_commit'; ALTER TABLE t2 ADD PRIMARY KEY (f2, f1); ERROR HY000: Lost connection to MySQL server during query # Startup the server after the crash SELECT * FROM information_schema.innodb_sys_tables WHERE name LIKE 'test/#sql-%'; TABLE_ID NAME FLAG N_COLS SPACE FILE_FORMAT ROW_FORMAT ZIP_PAGE_SIZE SPACE_TYPE SHOW TABLES; Tables_in_test t2 INSERT INTO t2 VALUES (5,6),(7,8); SELECT * from t2; f1 f2 1 2 3 4 5 6 7 8 SHOW CREATE TABLE t2; Table Create Table t2 CREATE TABLE `t2` ( `f1` int(11) NOT NULL, `f2` int(11) NOT NULL ) ENGINE=InnoDB DEFAULT CHARSET=latin1 DROP TABLE t2; CREATE TABLE t2 (f1 INT NOT NULL, f2 INT NOT NULL) ENGINE=InnoDB; ALTER TABLE t2 ADD PRIMARY KEY (f2, f1); DROP TABLE t2; db.opt # ------------------------- # End of Testing Scenario 2 # ------------------------- # # Bug#19330255 WL#7142 - CRASH DURING ALTER TABLE LEADS TO # DATA DICTIONARY INCONSISTENCY # CREATE TABLE t1(a int PRIMARY KEY, b varchar(255), c int NOT NULL) ENGINE=InnoDB; INSERT INTO t1 SET a=1,c=2; SET DEBUG_DBUG='+d,innodb_alter_commit_crash_after_commit'; ALTER TABLE t1 ADD INDEX (b), CHANGE c d int, ALGORITHM=INPLACE; ERROR HY000: Lost connection to MySQL server during query # Restart mysqld after the crash and reconnect. SELECT * FROM information_schema.innodb_sys_tables WHERE table_id = ID; TABLE_ID NAME FLAG N_COLS SPACE FILE_FORMAT ROW_FORMAT ZIP_PAGE_SIZE SPACE_TYPE # Files in datadir after manual recovery. db.opt t1.frm t1.ibd SHOW TABLES; Tables_in_test t1 SHOW CREATE TABLE t1; Table Create Table t1 CREATE TABLE `t1` ( `a` int(11) NOT NULL, `b` varchar(255) DEFAULT NULL, `d` int(11) DEFAULT NULL, PRIMARY KEY (`a`), KEY `b` (`b`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 UPDATE t1 SET d=NULL; SELECT * FROM t1; a b d 1 NULL NULL DROP TABLE t1;