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9bc874a594
Let us introduce the parameter innodb_read_only_compressed that is ON by default, making any ROW_FORMAT=COMPRESSED tables read-only. I developed the ROW_FORMAT=COMPRESSED format based on Heikki Tuuri's rough design between 2005 and 2008. It might have been a good idea back then, but no proper benchmarks were ever run to validate the design or the implementation. The format has been more or less obsolete for years. It limits innodb_page_size to 16384 bytes (the default), and instant ALTER TABLE is not supported. This is the first step towards deprecating and removing write support for ROW_FORMAT=COMPRESSED tables.
129 lines
3.3 KiB
Text
129 lines
3.3 KiB
Text
--echo #
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--echo # This tests the use of large blobs in InnoDB.
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--echo #
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--source include/have_innodb.inc
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--source include/not_debug.inc
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--source include/big_test.inc
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--disable_query_log
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# These values can change during the test
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let $innodb_file_per_table_orig = `SELECT @@innodb_file_per_table`;
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# Create a 20MB blob that does not compress easily.
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# 1000 Random characters is enough to keep compression low.
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set @alphabet="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
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set @r=abs(rand()*52) + 1;
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set @blob=substr(@alphabet,@r,1);
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let $1=1000;
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while ($1 > 1)
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{
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set @r=abs(rand()*52) + 1;
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set @letter=substr(@alphabet,@r,1);
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set @blob=concat(@blob,@letter);
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dec $1;
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}
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# The loop above is extremely slow compared to repeat().
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set @longblob=repeat(@blob,200000);
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--enable_query_log
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call mtr.add_suppression("InnoDB: Warning: a long semaphore wait");
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SET GLOBAL innodb_file_per_table = OFF;
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--echo #
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--echo # System tablespace, Row Format = Redundant
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--echo #
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CREATE TABLE t1 (
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c1 INT DEFAULT NULL,
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c2 LONGBLOB NOT NULL,
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KEY k2 (c2(250), c1)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1 ROW_FORMAT=REDUNDANT;
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INSERT INTO t1 VALUES (1, '');
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UPDATE t1 SET c2=@longblob;
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DROP TABLE t1;
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--echo #
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--echo # System tablespace, Row Format = Compact
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--echo #
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CREATE TABLE t1 (
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c1 INT DEFAULT NULL,
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c2 LONGBLOB NOT NULL,
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KEY k2 (c2(250), c1)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1 ROW_FORMAT=COMPACT;
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INSERT INTO t1 VALUES (1, '');
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UPDATE t1 SET c2=@longblob;
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DROP TABLE t1;
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SET GLOBAL innodb_file_per_table = ON;
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--echo #
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--echo # Separate tablespace, Row Format = Redundant
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--echo #
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CREATE TABLE t1 (
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c1 INT DEFAULT NULL,
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c2 LONGBLOB NOT NULL,
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KEY k2 (c2(250), c1)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1 ROW_FORMAT=REDUNDANT;
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INSERT INTO t1 VALUES (1, '');
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UPDATE t1 SET c2=@longblob;
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DROP TABLE t1;
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--echo #
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--echo # Separate tablespace, Row Format = Compact
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--echo #
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CREATE TABLE t1 (
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c1 INT DEFAULT NULL,
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c2 LONGBLOB NOT NULL,
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KEY k2 (c2(250), c1)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1 ROW_FORMAT=COMPACT;
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INSERT INTO t1 VALUES (1, '');
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UPDATE t1 SET c2=@longblob;
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DROP TABLE t1;
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--disable_query_log
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SET @save_innodb_read_only_compressed=@@GLOBAL.innodb_read_only_compressed;
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SET GLOBAL innodb_read_only_compressed=OFF;
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--enable_query_log
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--echo #
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--echo # Separate tablespace, Row Format = Compressed, Key Block Size = 2k
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--echo #
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CREATE TABLE t1 (
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c1 INT DEFAULT NULL,
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c2 LONGBLOB NOT NULL,
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KEY k2 (c2(250), c1)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1 KEY_BLOCK_SIZE=2;
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INSERT INTO t1 VALUES (1, '');
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UPDATE t1 SET c2=@longblob;
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DROP TABLE t1;
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--echo #
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--echo # Separate tablespace, Row Format = Compressed, Key Block Size = 1k
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--echo #
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CREATE TABLE t1 (
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c1 INT DEFAULT NULL,
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c2 LONGBLOB NOT NULL,
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KEY k2 (c2(250), c1)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1 KEY_BLOCK_SIZE=1;
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INSERT INTO t1 VALUES (1, '');
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UPDATE t1 SET c2=@longblob;
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--disable_query_log
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SET GLOBAL innodb_read_only_compressed=@save_innodb_read_only_compressed;
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--enable_query_log
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DROP TABLE t1;
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--echo #
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--echo # Separate tablespace, Row Format = Dynamic
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--echo #
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CREATE TABLE t1 (
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c1 INT DEFAULT NULL,
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c2 LONGBLOB NOT NULL,
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KEY k2 (c2(250), c1)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1 ROW_FORMAT=DYNAMIC;
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INSERT INTO t1 VALUES (1, '');
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UPDATE t1 SET c2=@longblob;
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DROP TABLE t1;
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--disable_query_log
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EVAL SET GLOBAL innodb_file_per_table = $innodb_file_per_table_orig;
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--enable_query_log
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