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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.
40 lines
2.0 KiB
Plaintext
40 lines
2.0 KiB
Plaintext
-- source include/innodb_page_size_small.inc
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-- source include/have_file_key_management_plugin.inc
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# embedded does not support restart
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-- source include/not_embedded.inc
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call mtr.add_suppression("InnoDB: The page \\[page id: space=[1-9][0-9]*, page number=[1-9][0-9]*\\] in file '.*test.t[123]\\.ibd' cannot be decrypted; key_version=1");
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call mtr.add_suppression("InnoDB: Recovery failed to read page");
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call mtr.add_suppression("InnoDB: Unable to decompress ..test.t[1-3]\\.ibd\\[page id: space=[1-9][0-9]*, page number=[0-9]+\\]");
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call mtr.add_suppression("InnoDB: Table `test`\\.`t[12]` is corrupted");
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--echo # Restart mysqld --file-key-management-filename=keys2.txt
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-- let $restart_parameters=--file-key-management-filename=$MYSQL_TEST_DIR/std_data/keys2.txt
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-- source include/restart_mysqld.inc
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set GLOBAL innodb_default_encryption_key_id=4;
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create table t1(a int not null primary key, b blob, index(b(10))) engine=innodb row_format=compressed;
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create table t2(a int not null primary key, b blob, index(b(10))) engine=innodb row_format=compressed encrypted=yes;
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create table t3(a int not null primary key, b blob, index(b(10))) engine=innodb row_format=compressed encrypted=no;
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insert into t1 values (1, repeat('secret',6000));
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insert into t2 values (1, repeat('secret',6000));
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insert into t3 values (1, repeat('secret',6000));
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--echo # Restart mysqld --file-key-management-filename=keys3.txt
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-- let $restart_parameters=--file-key-management-filename=$MYSQL_TEST_DIR/std_data/keys3.txt
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-- source include/restart_mysqld.inc
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--error ER_NO_SUCH_TABLE_IN_ENGINE
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select count(*) from t1 FORCE INDEX (b) where b like 'secret%';
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--error ER_NO_SUCH_TABLE_IN_ENGINE
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select count(*) from t2 FORCE INDEX (b) where b like 'secret%';
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select count(*) from t3 FORCE INDEX (b) where b like 'secret%';
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--echo # Restart mysqld --file-key-management-filename=keys2.txt
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-- let $restart_parameters=--file-key-management-filename=$MYSQL_TEST_DIR/std_data/keys2.txt
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-- source include/restart_mysqld.inc
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drop table t1,t2,t3;
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