mirror of
https://github.com/MariaDB/server.git
synced 2025-03-19 05:28:41 +01:00
e581396b7a
Before commit6112853cdain 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 commitb5852ffbee. Starting with commitbaf276e6d4(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 commit86dc7b4d4c(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.
399 lines
9.9 KiB
Text
399 lines
9.9 KiB
Text
call mtr.add_suppression("InnoDB: Unable to import tablespace .* because it already exists. Please DISCARD the tablespace before IMPORT\\.");
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call mtr.add_suppression("InnoDB: Cannot save statistics for table `test`\\.`t1` because the \\.ibd file is missing");
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SET SESSION innodb_strict_mode=1;
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CREATE TABLE t1
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(a INT AUTO_INCREMENT PRIMARY KEY,
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b char(22),
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c varchar(255),
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KEY (b))
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ENGINE = InnoDB ROW_FORMAT=COMPRESSED ;
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CREATE TEMPORARY TABLE t (b char(22),c varchar(255));
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INSERT INTO t VALUES
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('Apa', 'Filler........'),
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('Banan', 'Filler........'), ('Cavalry', '..asdasdfaeraf'),
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('Devotion', 'asdfuihknaskdf'), ('Evolution', 'lsjndofiabsoibeg');
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INSERT INTO t1 (b,c) SELECT b,c FROM t,seq_1_to_128;
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DROP TEMPORARY TABLE t;
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SELECT COUNT(*) FROM t1;
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COUNT(*)
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640
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SELECT * FROM t1 ORDER BY b,a DESC LIMIT 3;
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a b c
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636 Apa Filler........
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631 Apa Filler........
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626 Apa Filler........
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SELECT * FROM t1 ORDER BY a DESC LIMIT 3;
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a b c
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640 Evolution lsjndofiabsoibeg
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639 Devotion asdfuihknaskdf
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638 Cavalry ..asdasdfaeraf
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db.opt
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t1.frm
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t1.ibd
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# Restarting server
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# restart
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# Done restarting server
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FLUSH TABLE t1 FOR EXPORT;
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# List before copying files
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db.opt
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t1.cfg
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t1.frm
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t1.ibd
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UNLOCK TABLES;
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INSERT INTO t1 (b, c) SELECT b,c FROM t1 ORDER BY a;
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SELECT COUNT(*) FROM t1;
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COUNT(*)
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1280
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SELECT * FROM t1 ORDER BY b,a DESC LIMIT 3;
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a b c
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1276 Apa Filler........
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1271 Apa Filler........
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1266 Apa Filler........
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SELECT * FROM t1 ORDER BY a DESC LIMIT 3;
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a b c
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1280 Evolution lsjndofiabsoibeg
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1279 Devotion asdfuihknaskdf
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1278 Cavalry ..asdasdfaeraf
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# Restarting server
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# restart
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# Done restarting server
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# List before t1 DISCARD
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db.opt
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t1.frm
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t1.ibd
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ALTER TABLE t1 DISCARD TABLESPACE;
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# List after t1 DISCARD
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db.opt
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t1.frm
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ALTER TABLE t1 IMPORT TABLESPACE;
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ALTER TABLE t1 ENGINE InnoDB;
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SELECT COUNT(*) FROM t1;
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COUNT(*)
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640
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SELECT * FROM t1 ORDER BY b,a DESC LIMIT 3;
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a b c
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636 Apa Filler........
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631 Apa Filler........
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626 Apa Filler........
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SELECT * FROM t1 ORDER BY a DESC LIMIT 3;
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a b c
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640 Evolution lsjndofiabsoibeg
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639 Devotion asdfuihknaskdf
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638 Cavalry ..asdasdfaeraf
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db.opt
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t1.cfg
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t1.frm
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t1.ibd
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SELECT COUNT(*) FROM t1;
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COUNT(*)
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640
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SELECT * FROM t1 ORDER BY b,a DESC LIMIT 3;
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a b c
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636 Apa Filler........
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631 Apa Filler........
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626 Apa Filler........
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SELECT * FROM t1 ORDER BY a DESC LIMIT 3;
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a b c
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640 Evolution lsjndofiabsoibeg
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639 Devotion asdfuihknaskdf
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638 Cavalry ..asdasdfaeraf
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DROP TABLE t1;
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SET SESSION innodb_strict_mode=1;
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CREATE TABLE t1(
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c1 INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
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c2 INT) ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=1;
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INSERT INTO t1(c2) VALUES(1);
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ALTER TABLE t1 IMPORT TABLESPACE;
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ERROR HY000: Tablespace for table 'test/t1' exists. Please DISCARD the tablespace before IMPORT
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SELECT * FROM t1;
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c1 c2
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1 1
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DROP TABLE t1;
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CREATE TABLE t1(
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c1 INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
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c2 INT) ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=2;
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INSERT INTO t1 SELECT seq,1 FROM seq_1_to_16;
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db.opt
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t1.frm
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t1.ibd
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FLUSH TABLES t1 FOR EXPORT;
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backup: t1
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db.opt
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t1.cfg
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t1.frm
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t1.ibd
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UNLOCK TABLES;
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DROP TABLE t1;
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CREATE TABLE t1(
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c1 INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
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c2 INT) ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=2;
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ALTER TABLE t1 DISCARD TABLESPACE;
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SELECT * FROM t1;
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ERROR HY000: Tablespace has been discarded for table `t1`
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restore: t1 .ibd and .cfg files
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db.opt
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t1.cfg
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t1.frm
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t1.ibd
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ALTER TABLE t1 IMPORT TABLESPACE;
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CHECK TABLE t1;
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Table Op Msg_type Msg_text
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test.t1 check status OK
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SELECT COUNT(*) FROM t1;
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COUNT(*)
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16
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DROP TABLE t1;
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CREATE TABLE t1(
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c1 INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
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c2 INT) ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=4;
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INSERT INTO t1 SELECT seq,1 FROM seq_1_to_16;
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db.opt
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t1.frm
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t1.ibd
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FLUSH TABLES t1 FOR EXPORT;
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SELECT COUNT(*) FROM t1;
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COUNT(*)
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16
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backup: t1
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db.opt
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t1.cfg
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t1.frm
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t1.ibd
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UNLOCK TABLES;
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db.opt
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t1.frm
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t1.ibd
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DROP TABLE t1;
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CREATE TABLE t1(
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c1 INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
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c2 INT) ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=4;
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ALTER TABLE t1 DISCARD TABLESPACE;
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SELECT * FROM t1;
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ERROR HY000: Tablespace has been discarded for table `t1`
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restore: t1 .ibd and .cfg files
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db.opt
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t1.cfg
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t1.frm
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t1.ibd
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ALTER TABLE t1 IMPORT TABLESPACE;
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CHECK TABLE t1;
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Table Op Msg_type Msg_text
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test.t1 check status OK
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SELECT COUNT(*) FROM t1;
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COUNT(*)
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16
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DROP TABLE t1;
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CREATE TABLE t1(
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c1 INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
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c2 INT, INDEX(c2)) ENGINE=InnoDB
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ROW_FORMAT=COMPRESSED;
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INSERT INTO t1 SELECT seq,1 FROM seq_1_to_16;
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FLUSH TABLES t1 FOR EXPORT;
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backup: t1
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db.opt
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t1.cfg
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t1.frm
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t1.ibd
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UNLOCK TABLES;
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DROP TABLE t1;
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CREATE TABLE t1(
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c1 INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
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c2 INT, INDEX(c2)) ENGINE=InnoDB
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ROW_FORMAT=COMPRESSED;
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ALTER TABLE t1 DISCARD TABLESPACE;
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SELECT * FROM t1;
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ERROR HY000: Tablespace has been discarded for table `t1`
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restore: t1 .ibd and .cfg files
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ALTER TABLE t1 IMPORT TABLESPACE;
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CHECK TABLE t1;
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Table Op Msg_type Msg_text
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test.t1 check status OK
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SELECT COUNT(*) FROM t1 WHERE c2 = 1;
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COUNT(*)
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16
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DROP TABLE t1;
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CREATE TABLE t1(
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c1 INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
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c2 INT, INDEX idx(c2)) ENGINE=InnoDB
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ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=16;
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INSERT INTO t1 SELECT seq,1 FROM seq_1_to_16;
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FLUSH TABLES t1 FOR EXPORT;
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backup: t1
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UNLOCK TABLES;
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DROP TABLE t1;
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CREATE TABLE t1(
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c1 INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
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c2 INT, INDEX x(c2)) ENGINE=InnoDB
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ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=16;
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ALTER TABLE t1 DISCARD TABLESPACE;
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SELECT * FROM t1;
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ERROR HY000: Tablespace has been discarded for table `t1`
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restore: t1 .ibd and .cfg files
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ALTER TABLE t1 IMPORT TABLESPACE;
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ERROR HY000: Schema mismatch (Index x not found in tablespace meta-data file.)
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ALTER TABLE t1 DROP INDEX x;
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Warnings:
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Warning 1814 Tablespace has been discarded for table `t1`
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ALTER TABLE t1 ADD INDEX idx(c2);
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Warnings:
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Warning 1814 Tablespace has been discarded for table `t1`
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restore: t1 .ibd and .cfg files
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ALTER TABLE t1 IMPORT TABLESPACE;
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CHECK TABLE t1;
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Table Op Msg_type Msg_text
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test.t1 check status OK
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SELECT * FROM t1;
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c1 c2
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1 1
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2 1
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3 1
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4 1
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5 1
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6 1
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7 1
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8 1
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9 1
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10 1
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11 1
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12 1
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13 1
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14 1
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15 1
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16 1
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unlink: t1.cfg
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DROP TABLE t1;
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SET GLOBAL innodb_file_per_table = 0;
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Warnings:
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Warning 1287 '@@innodb_file_per_table' is deprecated and will be removed in a future release
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CREATE TABLE t1(
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c1 INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
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c2 INT) ENGINE=InnoDB;
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INSERT INTO t1 SELECT seq,1 FROM seq_1_to_16;
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SHOW CREATE TABLE t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`c1` int(11) NOT NULL AUTO_INCREMENT,
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`c2` int(11) DEFAULT NULL,
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PRIMARY KEY (`c1`)
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) ENGINE=InnoDB AUTO_INCREMENT=17 DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
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FLUSH TABLES t1 FOR EXPORT;
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Warnings:
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Warning 1809 Table `test`.`t1` in system tablespace
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UNLOCK TABLES;
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DROP TABLE t1;
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SET GLOBAL innodb_file_per_table = 1;
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Warnings:
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Warning 1287 '@@innodb_file_per_table' is deprecated and will be removed in a future release
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CREATE TABLE t1(
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c1 INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
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c2 INT, INDEX idx(c2)) ENGINE=InnoDB
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ROW_FORMAT=COMPRESSED;
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INSERT INTO t1 SELECT seq,1 FROM seq_1_to_16;
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SHOW CREATE TABLE t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`c1` int(11) NOT NULL AUTO_INCREMENT,
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`c2` int(11) DEFAULT NULL,
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PRIMARY KEY (`c1`),
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KEY `idx` (`c2`)
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) ENGINE=InnoDB AUTO_INCREMENT=17 DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci ROW_FORMAT=COMPRESSED
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FLUSH TABLES t1 FOR EXPORT;
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backup: t1
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UNLOCK TABLES;
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DROP TABLE t1;
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CREATE TABLE t1(
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c1 INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
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c2 INT) ENGINE=InnoDB
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ROW_FORMAT=COMPRESSED;
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ALTER TABLE t1 DISCARD TABLESPACE;
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SELECT * FROM t1;
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ERROR HY000: Tablespace has been discarded for table `t1`
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restore: t1 .ibd and .cfg files
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ALTER TABLE t1 IMPORT TABLESPACE;
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ERROR HY000: Schema mismatch (Number of indexes don't match, table has 1 indexes but the tablespace meta-data file has 2 indexes)
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unlink: t1.ibd
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unlink: t1.cfg
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DROP TABLE t1;
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CREATE TABLE t1(
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c1 INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
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c2 INT,
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c3 INT, INDEX idx(c2)) ENGINE=InnoDB
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ROW_FORMAT=COMPRESSED;
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ALTER TABLE t1 DISCARD TABLESPACE;
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SELECT * FROM t1;
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ERROR HY000: Tablespace has been discarded for table `t1`
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restore: t1 .ibd and .cfg files
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ALTER TABLE t1 IMPORT TABLESPACE;
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ERROR HY000: Schema mismatch (Column c3 not found in tablespace.)
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unlink: t1.ibd
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unlink: t1.cfg
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DROP TABLE t1;
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CREATE TABLE t1(
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c1 INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
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c2 BIGINT, INDEX idx(c2)) ENGINE=InnoDB
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ROW_FORMAT=COMPRESSED;
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ALTER TABLE t1 DISCARD TABLESPACE;
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SELECT * FROM t1;
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ERROR HY000: Tablespace has been discarded for table `t1`
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restore: t1 .ibd and .cfg files
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ALTER TABLE t1 IMPORT TABLESPACE;
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ERROR HY000: Schema mismatch (Column c2 precise type mismatch, it's 0X408 in the table and 0X403 in the tablespace meta file)
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unlink: t1.ibd
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unlink: t1.cfg
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DROP TABLE t1;
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CREATE TABLE t1(
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c1 INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
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c2 INT, INDEX idx(c2)) ENGINE=InnoDB
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ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=1;
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ALTER TABLE t1 DISCARD TABLESPACE;
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SELECT * FROM t1;
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ERROR HY000: Tablespace has been discarded for table `t1`
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restore: t1 .ibd and .cfg files
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ALTER TABLE t1 IMPORT TABLESPACE;
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ERROR HY000: Schema mismatch
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unlink: t1.ibd
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unlink: t1.cfg
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DROP TABLE t1;
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CREATE TABLE t1(
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c1 INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
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c2 INT, INDEX idx(c2)) ENGINE=InnoDB
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ROW_FORMAT=COMPRESSED;
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ALTER TABLE t1 DISCARD TABLESPACE;
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SELECT * FROM t1;
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ERROR HY000: Tablespace has been discarded for table `t1`
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restore: t1 .ibd and .cfg files
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ALTER TABLE t1 IMPORT TABLESPACE;
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CHECK TABLE t1;
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Table Op Msg_type Msg_text
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test.t1 check status OK
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unlink: t1.cfg
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SHOW CREATE TABLE t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`c1` int(11) NOT NULL AUTO_INCREMENT,
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`c2` int(11) DEFAULT NULL,
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PRIMARY KEY (`c1`),
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KEY `idx` (`c2`)
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) ENGINE=InnoDB AUTO_INCREMENT=17 DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci ROW_FORMAT=COMPRESSED
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SELECT * FROM t1;
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c1 c2
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1 1
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2 1
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3 1
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4 1
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5 1
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6 1
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7 1
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8 1
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9 1
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10 1
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11 1
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12 1
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13 1
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14 1
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15 1
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16 1
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DROP TABLE t1;
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call mtr.add_suppression("Got error -1 when reading table '.*'");
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call mtr.add_suppression("InnoDB: Error: tablespace id and flags in file '.*'");
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call mtr.add_suppression("InnoDB: The table .* doesn't have a corresponding tablespace, it was discarded");
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