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5407117a59
The InnoDB internal tables SYS_TABLESPACES and SYS_DATAFILES as well as the INFORMATION_SCHEMA views INNODB_SYS_TABLESPACES and INNODB_SYS_DATAFILES were introduced in MySQL 5.6 for no good reason in mysql/mysql-server/commit/e9255a22ef16d612a8076bc0b34002bc5a784627 when the InnoDB support for the DATA DIRECTORY attribute was introduced. The file system should be the authoritative source of information on files. Storing information about file system paths in the file system (symlinks, or even the .isl files that were unfortunately chosen as the solution) is sufficient. If information is additionally stored in some hidden tables inside the InnoDB system tablespace, everything unnecessarily becomes more complicated, because more copies of data mean more opportunity for the copies to be out of sync, and because modifying the data in the system tablespace in the desired way might not be possible at all without modifying the InnoDB source code. So, the copy in the system tablespace basically is a redundant, non-authoritative source of information. We will stop creating or accessing the system tables SYS_TABLESPACES and SYS_DATAFILES. We will also remove the view INFORMATION_SCHEMA.INNODB_SYS_DATAFILES along with SYS_DATAFILES. The view INFORMATION_SCHEMA.INNODB_SYS_TABLESPACES will be repurposed to directly reflect fil_system.space_list. The column PAGE_SIZE, which would always contain the value of the GLOBAL read-only variable innodb_page_size, is removed. The column ZIP_PAGE_SIZE, which would actually contain the physical page size of a page, is renamed to PAGE_SIZE. Finally, a new column FILENAME is added, as a replacement of SYS_DATAFILES.PATH. This will also address MDEV-21801 (files that were created before upgrading to MySQL 5.6 or MariaDB 10.0 or later were never registered in SYS_TABLESPACES or SYS_DATAFILES) and MDEV-21801 (information about the system tablespace is not stored in SYS_TABLESPACES or SYS_DATAFILES).
193 lines
5.6 KiB
Plaintext
193 lines
5.6 KiB
Plaintext
# restart: with restart_parameters
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SET GLOBAL innodb_file_per_table=1;
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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 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 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 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 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 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 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 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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