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ab0034a789
Temporary tables are typically short-lived, and temporary tables are assumed to be accessed only by the thread that is handling the owning connection. Hence, they must not be subject to defragmenting. ha_innobase::optimize(): Do not add temporary tables to the defragment_table() queue.
103 lines
3.3 KiB
Plaintext
103 lines
3.3 KiB
Plaintext
SET @n_pages= @@GLOBAL.innodb_defragment_n_pages;
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SET @accuracy= @@GLOBAL.innodb_defragment_stats_accuracy;
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SET @sp= @@GLOBAL.innodb_stats_persistent;
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SET GLOBAL innodb_stats_persistent = 0;
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set global innodb_defragment_stats_accuracy = 80;
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CREATE TABLE t1 (a INT NOT NULL PRIMARY KEY AUTO_INCREMENT,
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b VARCHAR(256),
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c INT,
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g GEOMETRY NOT NULL,
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t VARCHAR(256),
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KEY second(a, b),
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KEY third(c),
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SPATIAL gk(g),
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FULLTEXT INDEX fti(t)) ENGINE=INNODB;
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connect con1,localhost,root,,test,$MASTER_MYPORT,$MASTER_MYSOCK;
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connect con2,localhost,root,,test,$MASTER_MYPORT,$MASTER_MYSOCK;
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connect con3,localhost,root,,test,$MASTER_MYPORT,$MASTER_MYSOCK;
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connect con4,localhost,root,,test,$MASTER_MYPORT,$MASTER_MYSOCK;
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connection default;
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SET @@global.innodb_defragment_n_pages = 20;
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CREATE TEMPORARY TABLE tt (a INT, KEY(a)) ENGINE=InnoDB ROW_FORMAT=REDUNDANT;
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INSERT INTO tt SELECT 0 FROM seq_1_to_180;
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INSERT INTO tt SELECT 5 FROM seq_1_to_160;
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INSERT INTO tt SELECT 1 FROM seq_1_to_1000;
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OPTIMIZE TABLE tt;
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Table Op Msg_type Msg_text
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test.tt optimize note Table does not support optimize, doing recreate + analyze instead
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test.tt optimize status OK
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select count(*) from t1;
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count(*)
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20000
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select count(*) from t1 force index (second);
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count(*)
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20000
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select count(*) from t1 force index (third);
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count(*)
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20000
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select count(*) from t1;
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count(*)
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15800
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select count(*) from t1 force index (second);
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count(*)
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15800
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select count(*) from t1 force index (third);
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count(*)
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15800
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select count(stat_value) > 0 from mysql.innodb_index_stats where table_name like '%t1%' and stat_name in ('n_pages_freed');
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count(stat_value) > 0
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0
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select count(stat_value) > 0 from mysql.innodb_index_stats where table_name like '%t1%' and stat_name in ('n_page_split');
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count(stat_value) > 0
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1
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select count(stat_value) > 0 from mysql.innodb_index_stats where table_name like '%t1%' and stat_name in ('n_leaf_pages_defrag');
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count(stat_value) > 0
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1
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connection con1;
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optimize table t1;;
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connection default;
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INSERT INTO t1 VALUES (400000, REPEAT('A', 256),300000, Point(1,1),'More like a test but different.');;
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connection con2;
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INSERT INTO t1 VALUES (500000, REPEAT('A', 256),400000, Point(1,1),'Totally different text book.');;
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connection con3;
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DELETE FROM t1 where a between 1 and 100;;
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connection con4;
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UPDATE t1 SET c = c + 1 where c between 2000 and 8000;;
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connection con1;
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connection con2;
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connection con3;
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connection con4;
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connection default;
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disconnect con1;
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disconnect con2;
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disconnect con3;
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disconnect con4;
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optimize table t1;
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Table Op Msg_type Msg_text
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test.t1 optimize status OK
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check table t1 extended;
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Table Op Msg_type Msg_text
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test.t1 check status OK
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select count(*) from t1;
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count(*)
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15723
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select count(*) from t1 force index (second);
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count(*)
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15723
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select count(*) from t1 force index (third);
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count(*)
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15723
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select count(stat_value) > 0 from mysql.innodb_index_stats where table_name like '%t1%' and stat_name in ('n_pages_freed');
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count(stat_value) > 0
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1
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select count(stat_value) > 0 from mysql.innodb_index_stats where table_name like '%t1%' and stat_name in ('n_page_split');
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count(stat_value) > 0
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1
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select count(stat_value) > 0 from mysql.innodb_index_stats where table_name like '%t1%' and stat_name in ('n_leaf_pages_defrag');
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count(stat_value) > 0
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1
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drop table t1;
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SET GLOBAL innodb_defragment_n_pages = @n_pages;
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SET GLOBAL innodb_defragment_stats_accuracy = @accuracy;
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SET GLOBAL innodb_stats_persistent = @sp;
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