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* handler::get_auto_increment() was not expecting any errors from the storage engine. That was wrong, errors could happen. * ha_partition::get_auto_increment() was doing index lookups in partition under a mutex. This was redundant (engine transaction isolation was covering that anyway) and harmful (causing deadlocks).
51 lines
1.1 KiB
Text
51 lines
1.1 KiB
Text
#
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# MDEV-6605 Multiple Clients Inserting Causing Error: Failed to read auto-increment value from storage engine
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#
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--source include/have_partition.inc
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create table t1 (a int auto_increment, b bigint(20), primary key (b,a)) engine=tokudb;
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# first, without partitions
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start transaction;
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insert t1 (b) values (1);
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--connect(con2,localhost,root)
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set tokudb_lock_timeout=1;
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# auto-inc value is locked
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--error ER_LOCK_WAIT_TIMEOUT
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insert t1 (b) values (1);
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# but no deadlock
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set tokudb_lock_timeout=default;
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--send insert t1 (b) values (1)
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--connection default
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insert t1 (b) values (1);
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commit;
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--connection con2
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--reap
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commit;
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select * from t1;
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# now with partitions
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--connection default
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alter table t1 partition by range (b) (partition p0 values less than (9));
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start transaction;
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insert t1 (b) values (2);
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--connection con2
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set tokudb_lock_timeout=1;
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# auto-inc value is locked
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--error ER_LOCK_WAIT_TIMEOUT
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insert t1 (b) values (2);
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# but no deadlock
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set tokudb_lock_timeout=default;
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--send insert t1 (b) values (2)
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--connection default
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insert t1 (b) values (2);
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commit;
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--connection con2
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--reap
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commit;
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select * from t1;
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drop table t1;
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