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a4fa940bad
Problem was that we could take page latches on different order than wat is entitled with SX-lock. To follow the latching order defined in WL#6326, acquire index->lock X-latch. This entitles us to acquire page latches in any order for the index. btr0btr.cc Document latch rules before and after MariaDB 10.2.2 sync0rw.cc Document latch compatibility rules better. btr_defragment_merge_pages Fix parameter value. btr_defragment_thread Acquire X-lock to dict_index_t::lock before restoring cursor position and continuing defragmentation. ha_innobase::optimize Restore defragment feature. Testing Add GIS-index and FT-index to table being defragmented. Defragmentation is not done to GIS-indexes and FT auxiliary tables.
92 lines
2.7 KiB
Plaintext
92 lines
2.7 KiB
Plaintext
DROP TABLE if exists t1;
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select @@global.innodb_stats_persistent;
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@@global.innodb_stats_persistent
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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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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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