CREATE PROCEDURE populate_t1()
BEGIN
DECLARE i int DEFAULT 1;
START TRANSACTION;
WHILE (i <= 10000) DO
INSERT INTO t1 VALUES (i, i, CONCAT('a', i));
SET i = i + 1;
END WHILE;
COMMIT;
END|
CREATE TABLE t1(
class   INT,
id      INT,
title   VARCHAR(100)
) ENGINE=InnoDB ROW_FORMAT=REDUNDANT;
SELECT COUNT(*) FROM t1;
COUNT(*)
10000
CREATE INDEX idx_title ON t1(title);
affected rows: 0
info: Records: 0  Duplicates: 0  Warnings: 0
RENAME TABLE t1 TO t0;
# Test Blob
CREATE TABLE t1(
a INT PRIMARY KEY,
b TEXT,
c TEXT) ENGINE=InnoDB ROW_FORMAT=REDUNDANT;
INSERT INTO t1 VALUES
(1, REPEAT('a',10000), 'a'),
(2, REPEAT('b',20000), 'b'),
(3, REPEAT('c',40000), 'c'),
(4, REPEAT('d',60000), 'd');
SELECT CHAR_LENGTH(b) FROM t1;
CHAR_LENGTH(b)
10000
20000
40000
60000
ALTER TABLE t1 DROP COLUMN c, FORCE;
affected rows: 0
info: Records: 0  Duplicates: 0  Warnings: 0
CHECK TABLE t0,t1;
Table	Op	Msg_type	Msg_text
test.t0	check	status	OK
test.t1	check	status	OK
SELECT CHAR_LENGTH(b) FROM t1;
CHAR_LENGTH(b)
10000
20000
40000
60000
DROP TABLE t1;
RENAME TABLE t0 to t1;
CHECK TABLE t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
SELECT * FROM t1 WHERE title = 'a10';
class	id	title
10	10	a10
SELECT * FROM t1 WHERE title = 'a5000';
class	id	title
5000	5000	a5000
SELECT * FROM t1 WHERE title = 'a10000';
class	id	title
10000	10000	a10000
SELECT * FROM t1 WHERE title = 'a10010';
class	id	title
DROP TABLE t1;
CREATE TABLE t1(
class   INT,
id      INT,
title   VARCHAR(100)
) ENGINE=InnoDB ROW_FORMAT=REDUNDANT;
connect  hang,localhost,root;
SET DEBUG_SYNC='alter_table_inplace_trans_commit SIGNAL hung WAIT_FOR ever';
CREATE INDEX idx_title ON t1(title);
connection default;
SET DEBUG_SYNC='now WAIT_FOR hung';
disconnect hang;
SELECT COUNT(*) FROM t1;
COUNT(*)
10000
CHECK TABLE t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
EXPLAIN SELECT * FROM t1 WHERE title = 'a10';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	idx_title	idx_title	103	const	1	Using index condition
SELECT * FROM t1 WHERE title = 'a10';
class	id	title
10	10	a10
SELECT * FROM t1 WHERE title = 'a5000';
class	id	title
5000	5000	a5000
SELECT * FROM t1 WHERE title = 'a10000';
class	id	title
10000	10000	a10000
SELECT * FROM t1 WHERE title = 'a10010';
class	id	title
DROP TABLE t1;
# Test Blob
CREATE TABLE t1(
a INT PRIMARY KEY,
b TEXT,
c TEXT) ENGINE=InnoDB ROW_FORMAT=REDUNDANT;
INSERT INTO t1 VALUES
(1, REPEAT('a',10000), 'a'),
(2, REPEAT('b',20000), 'b'),
(3, REPEAT('c',40000), 'c'),
(4, REPEAT('d',60000), 'd');
SELECT CHAR_LENGTH(b) FROM t1;
CHAR_LENGTH(b)
10000
20000
40000
60000
connect  hang,localhost,root;
SET DEBUG_SYNC='alter_table_inplace_trans_commit SIGNAL hung WAIT_FOR ever';
ALTER TABLE t1 DROP COLUMN c, FORCE;
connection default;
SET DEBUG_SYNC='now WAIT_FOR hung';
disconnect hang;
CHECK TABLE t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
SELECT CHAR_LENGTH(b) FROM t1;
CHAR_LENGTH(b)
10000
20000
40000
60000
DROP TABLE t1;
DROP PROCEDURE populate_t1;
CREATE PROCEDURE populate_t1()
BEGIN
DECLARE i int DEFAULT 1;
START TRANSACTION;
WHILE (i <= 10000) DO
INSERT INTO t1 VALUES (i, i, CONCAT('a', i));
SET i = i + 1;
END WHILE;
COMMIT;
END|
CREATE TABLE t1(
class   INT,
id      INT,
title   VARCHAR(100)
) ENGINE=InnoDB ROW_FORMAT=COMPACT;
SELECT COUNT(*) FROM t1;
COUNT(*)
10000
CREATE INDEX idx_title ON t1(title);
affected rows: 0
info: Records: 0  Duplicates: 0  Warnings: 0
RENAME TABLE t1 TO t0;
# Test Blob
CREATE TABLE t1(
a INT PRIMARY KEY,
b TEXT,
c TEXT) ENGINE=InnoDB ROW_FORMAT=COMPACT;
INSERT INTO t1 VALUES
(1, REPEAT('a',10000), 'a'),
(2, REPEAT('b',20000), 'b'),
(3, REPEAT('c',40000), 'c'),
(4, REPEAT('d',60000), 'd');
SELECT CHAR_LENGTH(b) FROM t1;
CHAR_LENGTH(b)
10000
20000
40000
60000
ALTER TABLE t1 DROP COLUMN c, FORCE;
affected rows: 0
info: Records: 0  Duplicates: 0  Warnings: 0
CHECK TABLE t0,t1;
Table	Op	Msg_type	Msg_text
test.t0	check	status	OK
test.t1	check	status	OK
SELECT CHAR_LENGTH(b) FROM t1;
CHAR_LENGTH(b)
10000
20000
40000
60000
DROP TABLE t1;
RENAME TABLE t0 to t1;
CHECK TABLE t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
SELECT * FROM t1 WHERE title = 'a10';
class	id	title
10	10	a10
SELECT * FROM t1 WHERE title = 'a5000';
class	id	title
5000	5000	a5000
SELECT * FROM t1 WHERE title = 'a10000';
class	id	title
10000	10000	a10000
SELECT * FROM t1 WHERE title = 'a10010';
class	id	title
DROP TABLE t1;
CREATE TABLE t1(
class   INT,
id      INT,
title   VARCHAR(100)
) ENGINE=InnoDB ROW_FORMAT=COMPACT;
connect  hang,localhost,root;
SET DEBUG_SYNC='alter_table_inplace_trans_commit SIGNAL hung WAIT_FOR ever';
CREATE INDEX idx_title ON t1(title);
connection default;
SET DEBUG_SYNC='now WAIT_FOR hung';
disconnect hang;
SELECT COUNT(*) FROM t1;
COUNT(*)
10000
CHECK TABLE t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
EXPLAIN SELECT * FROM t1 WHERE title = 'a10';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	idx_title	idx_title	103	const	1	Using index condition
SELECT * FROM t1 WHERE title = 'a10';
class	id	title
10	10	a10
SELECT * FROM t1 WHERE title = 'a5000';
class	id	title
5000	5000	a5000
SELECT * FROM t1 WHERE title = 'a10000';
class	id	title
10000	10000	a10000
SELECT * FROM t1 WHERE title = 'a10010';
class	id	title
DROP TABLE t1;
# Test Blob
CREATE TABLE t1(
a INT PRIMARY KEY,
b TEXT,
c TEXT) ENGINE=InnoDB ROW_FORMAT=COMPACT;
INSERT INTO t1 VALUES
(1, REPEAT('a',10000), 'a'),
(2, REPEAT('b',20000), 'b'),
(3, REPEAT('c',40000), 'c'),
(4, REPEAT('d',60000), 'd');
SELECT CHAR_LENGTH(b) FROM t1;
CHAR_LENGTH(b)
10000
20000
40000
60000
connect  hang,localhost,root;
SET DEBUG_SYNC='alter_table_inplace_trans_commit SIGNAL hung WAIT_FOR ever';
ALTER TABLE t1 DROP COLUMN c, FORCE;
connection default;
SET DEBUG_SYNC='now WAIT_FOR hung';
disconnect hang;
CHECK TABLE t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
SELECT CHAR_LENGTH(b) FROM t1;
CHAR_LENGTH(b)
10000
20000
40000
60000
DROP TABLE t1;
DROP PROCEDURE populate_t1;
CREATE PROCEDURE populate_t1()
BEGIN
DECLARE i int DEFAULT 1;
START TRANSACTION;
WHILE (i <= 10000) DO
INSERT INTO t1 VALUES (i, i, CONCAT('a', i));
SET i = i + 1;
END WHILE;
COMMIT;
END|
CREATE TABLE t1(
class   INT,
id      INT,
title   VARCHAR(100)
) ENGINE=InnoDB ROW_FORMAT=DYNAMIC;
SELECT COUNT(*) FROM t1;
COUNT(*)
10000
CREATE INDEX idx_title ON t1(title);
affected rows: 0
info: Records: 0  Duplicates: 0  Warnings: 0
RENAME TABLE t1 TO t0;
# Test Blob
CREATE TABLE t1(
a INT PRIMARY KEY,
b TEXT,
c TEXT) ENGINE=InnoDB ROW_FORMAT=DYNAMIC;
INSERT INTO t1 VALUES
(1, REPEAT('a',10000), 'a'),
(2, REPEAT('b',20000), 'b'),
(3, REPEAT('c',40000), 'c'),
(4, REPEAT('d',60000), 'd');
SELECT CHAR_LENGTH(b) FROM t1;
CHAR_LENGTH(b)
10000
20000
40000
60000
ALTER TABLE t1 DROP COLUMN c, FORCE;
affected rows: 0
info: Records: 0  Duplicates: 0  Warnings: 0
CHECK TABLE t0,t1;
Table	Op	Msg_type	Msg_text
test.t0	check	status	OK
test.t1	check	status	OK
SELECT CHAR_LENGTH(b) FROM t1;
CHAR_LENGTH(b)
10000
20000
40000
60000
DROP TABLE t1;
RENAME TABLE t0 to t1;
CHECK TABLE t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
SELECT * FROM t1 WHERE title = 'a10';
class	id	title
10	10	a10
SELECT * FROM t1 WHERE title = 'a5000';
class	id	title
5000	5000	a5000
SELECT * FROM t1 WHERE title = 'a10000';
class	id	title
10000	10000	a10000
SELECT * FROM t1 WHERE title = 'a10010';
class	id	title
DROP TABLE t1;
CREATE TABLE t1(
class   INT,
id      INT,
title   VARCHAR(100)
) ENGINE=InnoDB ROW_FORMAT=DYNAMIC;
connect  hang,localhost,root;
SET DEBUG_SYNC='alter_table_inplace_trans_commit SIGNAL hung WAIT_FOR ever';
CREATE INDEX idx_title ON t1(title);
connection default;
SET DEBUG_SYNC='now WAIT_FOR hung';
disconnect hang;
SELECT COUNT(*) FROM t1;
COUNT(*)
10000
CHECK TABLE t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
EXPLAIN SELECT * FROM t1 WHERE title = 'a10';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	idx_title	idx_title	103	const	1	Using index condition
SELECT * FROM t1 WHERE title = 'a10';
class	id	title
10	10	a10
SELECT * FROM t1 WHERE title = 'a5000';
class	id	title
5000	5000	a5000
SELECT * FROM t1 WHERE title = 'a10000';
class	id	title
10000	10000	a10000
SELECT * FROM t1 WHERE title = 'a10010';
class	id	title
DROP TABLE t1;
# Test Blob
CREATE TABLE t1(
a INT PRIMARY KEY,
b TEXT,
c TEXT) ENGINE=InnoDB ROW_FORMAT=DYNAMIC;
INSERT INTO t1 VALUES
(1, REPEAT('a',10000), 'a'),
(2, REPEAT('b',20000), 'b'),
(3, REPEAT('c',40000), 'c'),
(4, REPEAT('d',60000), 'd');
SELECT CHAR_LENGTH(b) FROM t1;
CHAR_LENGTH(b)
10000
20000
40000
60000
connect  hang,localhost,root;
SET DEBUG_SYNC='alter_table_inplace_trans_commit SIGNAL hung WAIT_FOR ever';
ALTER TABLE t1 DROP COLUMN c, FORCE;
connection default;
SET DEBUG_SYNC='now WAIT_FOR hung';
disconnect hang;
CHECK TABLE t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
SELECT CHAR_LENGTH(b) FROM t1;
CHAR_LENGTH(b)
10000
20000
40000
60000
DROP TABLE t1;
DROP PROCEDURE populate_t1;
CREATE PROCEDURE populate_t1()
BEGIN
DECLARE i int DEFAULT 1;
START TRANSACTION;
WHILE (i <= 10000) DO
INSERT INTO t1 VALUES (i, i, CONCAT('a', i));
SET i = i + 1;
END WHILE;
COMMIT;
END|
CREATE TABLE t1(
class   INT,
id      INT,
title   VARCHAR(100)
) ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=4;
SELECT COUNT(*) FROM t1;
COUNT(*)
10000
CREATE INDEX idx_title ON t1(title);
affected rows: 0
info: Records: 0  Duplicates: 0  Warnings: 0
RENAME TABLE t1 TO t0;
# Test Blob
CREATE TABLE t1(
a INT PRIMARY KEY,
b TEXT,
c TEXT) ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=4;
INSERT INTO t1 VALUES
(1, REPEAT('a',10000), 'a'),
(2, REPEAT('b',20000), 'b'),
(3, REPEAT('c',40000), 'c'),
(4, REPEAT('d',60000), 'd');
SELECT CHAR_LENGTH(b) FROM t1;
CHAR_LENGTH(b)
10000
20000
40000
60000
ALTER TABLE t1 DROP COLUMN c, FORCE;
affected rows: 0
info: Records: 0  Duplicates: 0  Warnings: 0
CHECK TABLE t0,t1;
Table	Op	Msg_type	Msg_text
test.t0	check	status	OK
test.t1	check	status	OK
SELECT CHAR_LENGTH(b) FROM t1;
CHAR_LENGTH(b)
10000
20000
40000
60000
DROP TABLE t1;
RENAME TABLE t0 to t1;
CHECK TABLE t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
SELECT * FROM t1 WHERE title = 'a10';
class	id	title
10	10	a10
SELECT * FROM t1 WHERE title = 'a5000';
class	id	title
5000	5000	a5000
SELECT * FROM t1 WHERE title = 'a10000';
class	id	title
10000	10000	a10000
SELECT * FROM t1 WHERE title = 'a10010';
class	id	title
DROP TABLE t1;
CREATE TABLE t1(
class   INT,
id      INT,
title   VARCHAR(100)
) ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=4;
connect  hang,localhost,root;
SET DEBUG_SYNC='alter_table_inplace_trans_commit SIGNAL hung WAIT_FOR ever';
CREATE INDEX idx_title ON t1(title);
connection default;
SET DEBUG_SYNC='now WAIT_FOR hung';
disconnect hang;
SELECT COUNT(*) FROM t1;
COUNT(*)
10000
CHECK TABLE t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
EXPLAIN SELECT * FROM t1 WHERE title = 'a10';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	idx_title	idx_title	103	const	1	Using index condition
SELECT * FROM t1 WHERE title = 'a10';
class	id	title
10	10	a10
SELECT * FROM t1 WHERE title = 'a5000';
class	id	title
5000	5000	a5000
SELECT * FROM t1 WHERE title = 'a10000';
class	id	title
10000	10000	a10000
SELECT * FROM t1 WHERE title = 'a10010';
class	id	title
DROP TABLE t1;
# Test Blob
CREATE TABLE t1(
a INT PRIMARY KEY,
b TEXT,
c TEXT) ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=4;
INSERT INTO t1 VALUES
(1, REPEAT('a',10000), 'a'),
(2, REPEAT('b',20000), 'b'),
(3, REPEAT('c',40000), 'c'),
(4, REPEAT('d',60000), 'd');
SELECT CHAR_LENGTH(b) FROM t1;
CHAR_LENGTH(b)
10000
20000
40000
60000
connect  hang,localhost,root;
SET DEBUG_SYNC='alter_table_inplace_trans_commit SIGNAL hung WAIT_FOR ever';
ALTER TABLE t1 DROP COLUMN c, FORCE;
connection default;
SET DEBUG_SYNC='now WAIT_FOR hung';
disconnect hang;
CHECK TABLE t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
SELECT CHAR_LENGTH(b) FROM t1;
CHAR_LENGTH(b)
10000
20000
40000
60000
DROP TABLE t1;
DROP PROCEDURE populate_t1;