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FLUSH TABLES;
#
# MDEV-11369: Instant ADD COLUMN for InnoDB
#
CREATE TABLE t1(id INT PRIMARY KEY, c2 INT UNIQUE)
ENGINE=InnoDB ROW_FORMAT=REDUNDANT;
CREATE TABLE t2 LIKE t1;
INSERT INTO t1 VALUES(1,2);
BEGIN;
INSERT INTO t2 VALUES(2,1);
ALTER TABLE t2 ADD COLUMN (c3 TEXT NOT NULL DEFAULT 'De finibus bonorum');
connect ddl, localhost, root;
SET DEBUG_SYNC='innodb_alter_inplace_before_commit SIGNAL ddl WAIT_FOR ever';
ALTER TABLE t1 ADD COLUMN (c3 TEXT NOT NULL DEFAULT ' et malorum');
connection default;
SET DEBUG_SYNC='now WAIT_FOR ddl';
SET GLOBAL innodb_flush_log_at_trx_commit=1;
COMMIT;
# Kill the server
disconnect ddl;
SET GLOBAL innodb_purge_rseg_truncate_frequency=1;
SELECT * FROM t1;
id c2
1 2
SELECT * FROM t2;
id c2 c3
2 1 De finibus bonorum
BEGIN;
DELETE FROM t1;
ROLLBACK;
InnoDB 0 transactions not purged
INSERT INTO t2 VALUES (64,42,'De finibus bonorum'), (347,33101,' et malorum');
connect ddl, localhost, root;
SET DEBUG_SYNC='innodb_alter_inplace_before_commit SIGNAL ddl WAIT_FOR ever';
ALTER TABLE t2 ADD COLUMN (c4 TEXT NOT NULL DEFAULT ' et malorum');
connection default;
SET DEBUG_SYNC='now WAIT_FOR ddl';
SET GLOBAL innodb_flush_log_at_trx_commit=1;
DELETE FROM t1;
# Kill the server
disconnect ddl;
SET @saved_frequency= @@GLOBAL.innodb_purge_rseg_truncate_frequency;
SET GLOBAL innodb_purge_rseg_truncate_frequency=1;
SELECT * FROM t1;
id c2
SELECT * FROM t2;
id c2 c3
2 1 De finibus bonorum
64 42 De finibus bonorum
347 33101 et malorum
BEGIN;
INSERT INTO t1 SET id=1;
DELETE FROM t2;
ROLLBACK;
InnoDB 0 transactions not purged
FLUSH TABLE t1,t2 FOR EXPORT;
t1 clustered index root page(type 17855):
N_RECS=0; LEVEL=0
header=0x010000030074 (id=0x696e66696d756d00)
header=0x010008030000 (id=0x73757072656d756d00)
t2 clustered index root page(type 18):
N_RECS=4; LEVEL=0
header=0x010000030088 (id=0x696e66696d756d00)
header=0x1000100b00b9 (id=0x80000000,
DB_TRX_ID=0x000000000000,
DB_ROLL_PTR=0x80000000000000,
c2=NULL(4 bytes),
c3=0x44652066696e6962757320626f6e6f72756d)
header=0x0000180900d8 (id=0x80000002,
DB_TRX_ID=0x000000000000,
DB_ROLL_PTR=0x80000000000000,
c2=0x80000001)
header=0x0000200900f8 (id=0x80000040,
DB_TRX_ID=0x000000000000,
DB_ROLL_PTR=0x80000000000000,
c2=0x8000002a)
header=0x0000280b0074 (id=0x8000015b,
DB_TRX_ID=0x000000000000,
DB_ROLL_PTR=0x80000000000000,
c2=0x8000814d,
c3=0x206574206d616c6f72756d)
header=0x050008030000 (id=0x73757072656d756d00)
UNLOCK TABLES;
DELETE FROM t2;
InnoDB 0 transactions not purged
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`id` int(11) NOT NULL,
`c2` int(11) DEFAULT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `c2` (`c2`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 ROW_FORMAT=REDUNDANT
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE `t2` (
`id` int(11) NOT NULL,
`c2` int(11) DEFAULT NULL,
`c3` text NOT NULL DEFAULT 'De finibus bonorum',
PRIMARY KEY (`id`),
UNIQUE KEY `c2` (`c2`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 ROW_FORMAT=REDUNDANT
DROP TABLE t1,t2;
db.opt
SET GLOBAL innodb_purge_rseg_truncate_frequency=@saved_frequency;
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