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25d69ea012
ha_innobase::defragment_table(): Skip corrupted indexes and FULLTEXT INDEX. In InnoDB, FULLTEXT INDEX is implemented with auxiliary tables. We will not defragment them on OPTIMIZE TABLE.
125 lines
5.0 KiB
Plaintext
125 lines
5.0 KiB
Plaintext
set global innodb_defragment_stats_accuracy = 80;
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CREATE TABLE t1 (a INT NOT NULL PRIMARY KEY AUTO_INCREMENT, b VARCHAR(256), KEY SECOND(a, b)) ENGINE=INNODB;
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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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INSERT INTO t1 VALUES (100000, REPEAT('A', 256));
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INSERT INTO t1 VALUES (200000, REPEAT('A', 256));
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INSERT INTO t1 VALUES (300000, REPEAT('A', 256));
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INSERT INTO t1 VALUES (400000, REPEAT('A', 256));
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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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create procedure defragment()
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begin
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set @i = 0;
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repeat
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set @i = @i + 1;
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optimize table t1;
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until @i = 3 end repeat;
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end //
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select count(stat_value) from mysql.innodb_index_stats where table_name like '%t1%' and stat_name in ('n_pages_freed');
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count(stat_value)
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0
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select count(stat_value) from mysql.innodb_index_stats where table_name like '%t1%' and stat_name in ('n_page_split');
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count(stat_value)
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2
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select count(stat_value) 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)
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2
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select count(*) from t1;
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count(*)
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10004
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call defragment();
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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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select count(*) from t1;
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count(*)
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7904
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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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select count(*) from t1 force index (second);
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count(*)
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7904
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select count(stat_value) = 0 from mysql.innodb_index_stats where table_name like '%t1%' and index_name = 'second' 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 index_name = 'second' 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 index_name = 'second' 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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SET @@global.innodb_defragment_n_pages = 3;
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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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select count(stat_value) < 3 from mysql.innodb_index_stats where table_name like '%t1%' and stat_name in ('n_pages_freed');
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count(stat_value) < 3
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1
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select count(stat_value) < 3 from mysql.innodb_index_stats where table_name like '%t1%' and stat_name in ('n_page_split');
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count(stat_value) < 3
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1
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select count(stat_value) < 3 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) < 3
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1
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select count(*) from t1;
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count(*)
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6904
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select count(stat_value) < 3 from mysql.innodb_index_stats where table_name like '%t1%' and stat_name in ('n_pages_freed');
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count(stat_value) < 3
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1
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select count(stat_value) < 3 from mysql.innodb_index_stats where table_name like '%t1%' and stat_name in ('n_page_split');
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count(stat_value) < 3
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1
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select count(stat_value) < 3 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) < 3
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1
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select count(*) from t1 force index (second);
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count(*)
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6904
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select count(stat_value) = 0 from mysql.innodb_index_stats where table_name like '%t1%' and index_name = 'second' 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 index_name = 'second' 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 index_name = 'second' 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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SET @@global.innodb_defragment_n_pages = 10;
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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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select count(stat_value) > 1 from mysql.innodb_index_stats where table_name like '%t1%' and stat_name in ('n_pages_freed');
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count(stat_value) > 1
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1
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select count(stat_value) > 1 from mysql.innodb_index_stats where table_name like '%t1%' and stat_name in ('n_page_split');
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count(stat_value) > 1
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1
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select count(stat_value) > 1 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) > 1
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1
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select count(*) from t1 force index (second);
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count(*)
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6904
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select count(stat_value) = 0 from mysql.innodb_index_stats where table_name like '%t1%' and index_name = 'second' 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 index_name = 'second' 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 index_name = 'second' 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 PROCEDURE defragment;
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DROP TABLE t1;
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