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11.4-mdev-36389-indexed-text-column-wrong-result
mariadb/mysql-test/suite/innodb/r/innodb_bulk_create_index_debug.result
Marko Mäkelä e581396b7a MDEV-29983 Deprecate innodb_file_per_table 
Before commit 6112853cda in MySQL 4.1.1
introduced the parameter innodb_file_per_table, all InnoDB data was
written to the InnoDB system tablespace (often named ibdata1).
A serious design problem is that once the system tablespace has grown to
some size, it cannot shrink even if the data inside it has been deleted.

There are also other design problems, such as the server hang MDEV-29930
that should only be possible when using innodb_file_per_table=0 and
innodb_undo_tablespaces=0 (storing both tables and undo logs in the
InnoDB system tablespace).

The parameter innodb_change_buffering was deprecated
in commit b5852ffbee.
Starting with commit baf276e6d4
(MDEV-19229) the number of innodb_undo_tablespaces can be increased,
so that the undo logs can be moved out of the system tablespace
of an existing installation.

If all these things (tables, undo logs, and the change buffer) are
removed from the InnoDB system tablespace, the only variable-size
data structure inside it is the InnoDB data dictionary.

DDL operations on .ibd files was optimized in
commit 86dc7b4d4c (MDEV-24626).
That should have removed any thinkable performance advantage of
using innodb_file_per_table=0.

Since there should be no benefit of setting innodb_file_per_table=0,
the parameter should be deprecated. Starting with MySQL 5.6 and
MariaDB Server 10.0, the default value is innodb_file_per_table=1.
2023-01-11 17:55:56 +02:00

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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;
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