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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.
192 lines
5.7 KiB
Plaintext
192 lines
5.7 KiB
Plaintext
# restart: with restart_parameters
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CREATE TABLE tr(a INT PRIMARY KEY)ENGINE=InnoDB ROW_FORMAT=REDUNDANT;
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CREATE TABLE tc(a INT PRIMARY KEY)ENGINE=InnoDB ROW_FORMAT=COMPACT;
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CREATE TABLE td(a INT PRIMARY KEY)ENGINE=InnoDB ROW_FORMAT=DYNAMIC;
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SET innodb_strict_mode=OFF;
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CREATE TABLE tz(a INT PRIMARY KEY)ENGINE=InnoDB ROW_FORMAT=COMPRESSED
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KEY_BLOCK_SIZE=1;
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SET innodb_strict_mode=ON;
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CREATE TABLE tp(a INT PRIMARY KEY)ENGINE=InnoDB ROW_FORMAT=DYNAMIC
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PAGE_COMPRESSED=1 PAGE_COMPRESSION_LEVEL=9;
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SYS_TABLES clustered index root page (8):
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N_RECS=8; LEVEL=0; INDEX_ID=0x0000000000000001
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header=0x01000003008d (NAME=0x696e66696d756d00)
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header=0x0000101500d5 (NAME='SYS_FOREIGN',
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DB_TRX_ID=0x000000000000,
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DB_ROLL_PTR=0x80000000000000,
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ID=0x000000000000000b,
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N_COLS=0x00000004,
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TYPE=0x00000001,
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MIX_ID=0x0000000000000000,
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MIX_LEN=0x00000040,
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CLUSTER_NAME=NULL(0 bytes),
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SPACE=0x00000000)
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header=0x000018150122 (NAME='SYS_FOREIGN_COLS',
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DB_TRX_ID=0x000000000000,
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DB_ROLL_PTR=0x80000000000000,
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ID=0x000000000000000c,
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N_COLS=0x00000004,
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TYPE=0x00000001,
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MIX_ID=0x0000000000000000,
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MIX_LEN=0x00000040,
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CLUSTER_NAME=NULL(0 bytes),
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SPACE=0x00000000)
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header=0x0000201501ae (NAME='SYS_VIRTUAL',
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DB_TRX_ID=0x000000000000,
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DB_ROLL_PTR=0x80000000000000,
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ID=0x000000000000000d,
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N_COLS=0x00000003,
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TYPE=0x00000001,
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MIX_ID=0x0000000000000000,
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MIX_LEN=0x00000040,
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CLUSTER_NAME=NULL(0 bytes),
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SPACE=0x00000000)
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header=0x0400301501f2 (NAME='test/tc',
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DB_TRX_ID=0x000000000000,
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DB_ROLL_PTR=0x80000000000000,
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ID=0x000000000000000f,
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N_COLS=0x80000001,
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TYPE=0x00000001,
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MIX_ID=0x0000000000000000,
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MIX_LEN=0x00000050,
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CLUSTER_NAME=NULL(0 bytes),
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SPACE=0x00000002)
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header=0x00003815027a (NAME='test/td',
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DB_TRX_ID=0x000000000000,
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DB_ROLL_PTR=0x80000000000000,
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ID=0x0000000000000010,
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N_COLS=0x80000001,
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TYPE=0x00000021,
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MIX_ID=0x0000000000000000,
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MIX_LEN=0x00000050,
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CLUSTER_NAME=NULL(0 bytes),
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SPACE=0x00000003)
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header=0x00004815016a (NAME='test/tp',
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DB_TRX_ID=0x000000000000,
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DB_ROLL_PTR=0x80000000000000,
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ID=0x0000000000000012,
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N_COLS=0x80000001,
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TYPE=0x000009a1,
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MIX_ID=0x0000000000000000,
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MIX_LEN=0x00000050,
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CLUSTER_NAME=NULL(0 bytes),
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SPACE=0x00000005)
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header=0x000028150236 (NAME='test/tr',
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DB_TRX_ID=0x000000000000,
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DB_ROLL_PTR=0x80000000000000,
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ID=0x000000000000000e,
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N_COLS=0x00000001,
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TYPE=0x00000001,
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MIX_ID=0x0000000000000000,
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MIX_LEN=0x00000050,
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CLUSTER_NAME=NULL(0 bytes),
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SPACE=0x00000001)
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header=0x000040150074 (NAME='test/tz',
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DB_TRX_ID=0x000000000000,
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DB_ROLL_PTR=0x80000000000000,
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ID=0x0000000000000011,
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N_COLS=0x80000001,
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TYPE=0x00000023,
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MIX_ID=0x0000000000000000,
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MIX_LEN=0x00000050,
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CLUSTER_NAME=NULL(0 bytes),
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SPACE=0x00000004)
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header=0x050008030000 (NAME=0x73757072656d756d00)
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# restart: with restart_parameters
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SHOW CREATE TABLE tr;
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ERROR 42S02: Table 'test.tr' doesn't exist in engine
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SHOW CREATE TABLE tc;
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ERROR 42S02: Table 'test.tc' doesn't exist in engine
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SELECT * FROM tc;
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ERROR 42S02: Table 'test.tc' doesn't exist in engine
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SHOW CREATE TABLE td;
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Table Create Table
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td CREATE TABLE `td` (
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`a` int(11) NOT NULL,
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PRIMARY KEY (`a`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci ROW_FORMAT=DYNAMIC
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SELECT * FROM td;
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a
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SHOW CREATE TABLE tz;
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Table Create Table
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tz CREATE TABLE `tz` (
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`a` int(11) NOT NULL,
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PRIMARY KEY (`a`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=1
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BEGIN;
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INSERT INTO tz VALUES(42);
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ROLLBACK;
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SELECT * FROM tz;
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a
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42
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SHOW CREATE TABLE tp;
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ERROR 42S02: Table 'test.tp' doesn't exist in engine
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FOUND 5 /InnoDB: Table test/t[cp] in InnoDB data dictionary contains invalid flags\. SYS_TABLES\.TYPE=(129|289|3873|1232[13]) SYS_TABLES\.N_COLS=2147483649/ in mysqld.1.err
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FOUND 2 /InnoDB: Table test/tr in InnoDB data dictionary contains invalid flags\. SYS_TABLES\.TYPE=65 SYS_TABLES\.MIX_LEN=4294967295\b/ in mysqld.1.err
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Restoring SYS_TABLES clustered index root page (8)
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# restart: with restart_parameters
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SHOW CREATE TABLE tr;
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Table Create Table
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tr CREATE TABLE `tr` (
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`a` int(11) NOT NULL,
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PRIMARY KEY (`a`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci ROW_FORMAT=REDUNDANT
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SHOW CREATE TABLE tc;
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Table Create Table
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tc CREATE TABLE `tc` (
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`a` int(11) NOT NULL,
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PRIMARY KEY (`a`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci ROW_FORMAT=COMPACT
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SHOW CREATE TABLE td;
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Table Create Table
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td CREATE TABLE `td` (
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`a` int(11) NOT NULL,
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PRIMARY KEY (`a`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci ROW_FORMAT=DYNAMIC
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SHOW CREATE TABLE tz;
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Table Create Table
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tz CREATE TABLE `tz` (
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`a` int(11) NOT NULL,
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PRIMARY KEY (`a`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=1
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SHOW CREATE TABLE tp;
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Table Create Table
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tp CREATE TABLE `tp` (
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`a` int(11) NOT NULL,
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PRIMARY KEY (`a`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci ROW_FORMAT=DYNAMIC `PAGE_COMPRESSED`=1 `PAGE_COMPRESSION_LEVEL`=9
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BEGIN;
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INSERT INTO tr VALUES(1);
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INSERT INTO tc VALUES(1);
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INSERT INTO td VALUES(1);
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INSERT INTO tp VALUES(1);
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ROLLBACK;
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SELECT * FROM tr;
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a
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SELECT * FROM tc;
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a
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SELECT * FROM td;
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a
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SELECT * FROM tp;
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a
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DROP TABLE tr,tc,td,tz,tp;
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# restart
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ib_logfile0
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ibdata1
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sys_tables.bin
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call mtr.add_suppression("ERROR HY000: Can't create table `test`.`t1`");
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CREATE TABLE t1(f1 INT, f2 VARCHAR(1), KEY k1(f2),
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FULLTEXT KEY(f2),
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FOREIGN KEY (f2) REFERENCES t1(f3))ENGINE=InnoDB;
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ERROR HY000: Can't create table `test`.`t1` (errno: 150 "Foreign key constraint is incorrectly formed")
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#
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# MDEV-23199 page_compression flag is missing
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# for full_crc32 tablespace
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#
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CREATE TABLE t1(f1 BIGINT PRIMARY KEY)ENGINE=InnoDB;
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INSERT INTO t1 VALUES(1);
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ALTER TABLE t1 PAGE_COMPRESSED = 1;
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INSERT INTO t1 VALUES(2);
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# restart
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DROP TABLE t1;
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