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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.
203 lines
3.8 KiB
SQL
203 lines
3.8 KiB
SQL
#
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# wl#7277: InnoDB: Bulk Load for Create Index
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#
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# Not supported in embedded
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-- source include/not_embedded.inc
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-- source include/have_debug.inc
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-- source include/have_debug_sync.inc
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# Create Insert Procedure
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DELIMITER |;
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CREATE PROCEDURE populate_t1()
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BEGIN
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DECLARE i int DEFAULT 1;
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START TRANSACTION;
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WHILE (i <= 10000) DO
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INSERT INTO t1 VALUES (i, i, CONCAT('a', i));
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SET i = i + 1;
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END WHILE;
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COMMIT;
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END|
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DELIMITER ;|
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# Test scenarios:
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# 1. Test restart;
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# 2. Test crash recovery.
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# Test Restart
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if ($row_format != 'COMPRESSED')
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{
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eval CREATE TABLE t1(
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class INT,
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id INT,
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title VARCHAR(100)
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) ENGINE=InnoDB ROW_FORMAT=$row_format;
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}
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if ($row_format == 'COMPRESSED')
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{
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eval CREATE TABLE t1(
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class INT,
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id INT,
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title VARCHAR(100)
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) ENGINE=InnoDB ROW_FORMAT=$row_format KEY_BLOCK_SIZE=4;
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}
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-- disable_query_log
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CALL populate_t1();
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-- enable_query_log
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SELECT COUNT(*) FROM t1;
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--enable_info
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CREATE INDEX idx_title ON t1(title);
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--disable_info
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RENAME TABLE t1 TO t0;
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-- echo # Test Blob
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if ($row_format != 'COMPRESSED') {
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eval CREATE TABLE t1(
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a INT PRIMARY KEY,
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b TEXT,
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c TEXT) ENGINE=InnoDB ROW_FORMAT=$row_format;
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}
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if ($row_format == 'COMPRESSED') {
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eval CREATE TABLE t1(
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a INT PRIMARY KEY,
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b TEXT,
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c TEXT) ENGINE=InnoDB ROW_FORMAT=$row_format KEY_BLOCK_SIZE=4;
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}
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INSERT INTO t1 VALUES
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(1, REPEAT('a',10000), 'a'),
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(2, REPEAT('b',20000), 'b'),
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(3, REPEAT('c',40000), 'c'),
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(4, REPEAT('d',60000), 'd');
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SELECT CHAR_LENGTH(b) FROM t1;
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--enable_info
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ALTER TABLE t1 DROP COLUMN c, FORCE;
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--disable_info
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--source include/restart_mysqld.inc
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CHECK TABLE t0,t1;
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SELECT CHAR_LENGTH(b) FROM t1;
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DROP TABLE t1;
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RENAME TABLE t0 to t1;
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CHECK TABLE t1;
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SELECT * FROM t1 WHERE title = 'a10';
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SELECT * FROM t1 WHERE title = 'a5000';
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SELECT * FROM t1 WHERE title = 'a10000';
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SELECT * FROM t1 WHERE title = 'a10010';
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DROP TABLE t1;
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# Test Crash Recovery
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if ($row_format != 'COMPRESSED')
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{
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eval CREATE TABLE t1(
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class INT,
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id INT,
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title VARCHAR(100)
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) ENGINE=InnoDB ROW_FORMAT=$row_format;
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}
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if ($row_format == 'COMPRESSED')
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{
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eval CREATE TABLE t1(
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class INT,
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id INT,
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title VARCHAR(100)
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) ENGINE=InnoDB ROW_FORMAT=$row_format KEY_BLOCK_SIZE=4;
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}
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-- disable_query_log
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CALL populate_t1();
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-- enable_query_log
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connect (hang,localhost,root);
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SET DEBUG_SYNC='alter_table_inplace_trans_commit SIGNAL hung WAIT_FOR ever';
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send
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CREATE INDEX idx_title ON t1(title);
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connection default;
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SET DEBUG_SYNC='now WAIT_FOR hung';
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let $shutdown_timeout=0;
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--source include/restart_mysqld.inc
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disconnect hang;
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SELECT COUNT(*) FROM t1;
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CHECK TABLE t1;
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EXPLAIN SELECT * FROM t1 WHERE title = 'a10';
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SELECT * FROM t1 WHERE title = 'a10';
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SELECT * FROM t1 WHERE title = 'a5000';
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SELECT * FROM t1 WHERE title = 'a10000';
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SELECT * FROM t1 WHERE title = 'a10010';
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DROP TABLE t1;
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-- echo # Test Blob
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if ($row_format != 'COMPRESSED') {
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eval CREATE TABLE t1(
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a INT PRIMARY KEY,
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b TEXT,
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c TEXT) ENGINE=InnoDB ROW_FORMAT=$row_format;
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}
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if ($row_format == 'COMPRESSED') {
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eval CREATE TABLE t1(
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a INT PRIMARY KEY,
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b TEXT,
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c TEXT) ENGINE=InnoDB ROW_FORMAT=$row_format KEY_BLOCK_SIZE=4;
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}
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INSERT INTO t1 VALUES
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(1, REPEAT('a',10000), 'a'),
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(2, REPEAT('b',20000), 'b'),
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(3, REPEAT('c',40000), 'c'),
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(4, REPEAT('d',60000), 'd');
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SELECT CHAR_LENGTH(b) FROM t1;
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connect (hang,localhost,root);
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SET DEBUG_SYNC='alter_table_inplace_trans_commit SIGNAL hung WAIT_FOR ever';
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send
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ALTER TABLE t1 DROP COLUMN c, FORCE;
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connection default;
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SET DEBUG_SYNC='now WAIT_FOR hung';
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--source include/restart_mysqld.inc
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disconnect hang;
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let $shutdown_timeout=60;
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CHECK TABLE t1;
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SELECT CHAR_LENGTH(b) FROM t1;
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DROP TABLE t1;
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DROP PROCEDURE populate_t1;
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