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86975e0492
Table before collecting engine independent statistics now is reopened in read mode, InnoDB allow write operations in this case.
36 lines
983 B
Text
36 lines
983 B
Text
--source include/have_innodb.inc
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--source include/have_sequence.inc
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--source include/have_stat_tables.inc
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--source include/have_debug_sync.inc
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--source include/not_embedded.inc
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--echo #
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--echo # MDEV-7901: re-implement analyze table for low impact
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--echo #
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create table t1 (a int, b int, c int, key IDX1(a), key IDX2(a,b)) engine=innodb;
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insert into t1 select seq/10, seq/2, seq from seq_0_to_9;
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SET DEBUG_SYNC='statistics_collection_start1 SIGNAL analyzing WAIT_FOR written';
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send analyze table t1 persistent for all;
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connect (con1, localhost, root,,);
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--connection con1
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SET DEBUG_SYNC= 'now WAIT_FOR analyzing';
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select count(*) from t1;
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# insert will work even with MyISAM because it allow to append file
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insert into t1 values (333,333,333);
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# but update now hang for MyISAM bacause can't get lock (InnoDB/XtraDB works)
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update t1 set a=1;
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SET DEBUG_SYNC= 'now SIGNAL written';
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--connection default
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--reap
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select count(*) from t1;
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set debug_sync='RESET';
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drop table t1;
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