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1
by brian
clean slate |
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# Let's see if FLUSH TABLES WITH READ LOCK blocks COMMIT of existing |
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# transactions. |
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# We verify that we did not introduce a deadlock. |
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# This is intended to mimick how mysqldump and innobackup work. |
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# And it requires InnoDB |
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-- source include/have_innodb.inc
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connect (con1,localhost,root,,); |
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connect (con2,localhost,root,,); |
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connect (con3,localhost,root,,); |
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connection con1; |
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--disable_warnings
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drop table if exists t1; |
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--enable_warnings
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create table t1 (a int) engine=innodb; |
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# blocks COMMIT ? |
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begin; |
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insert into t1 values(1); |
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connection con2; |
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flush tables with read lock; |
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select * from t1; |
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connection con1; |
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send commit; # blocked by con2 |
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sleep 1; |
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connection con2; |
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select * from t1; # verify con1 was blocked and data did not move |
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unlock tables; |
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connection con1; |
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reap; |
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# No deadlock ? |
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connection con1; |
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begin; |
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select * from t1 for update; |
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connection con2; |
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begin; |
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send select * from t1 for update; # blocked by con1 |
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sleep 1; |
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connection con3; |
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send flush tables with read lock; # blocked by con2 |
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connection con1; |
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commit; # should not be blocked by con3 |
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connection con2; |
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reap; |
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connection con3; |
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reap; |
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unlock tables; |
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# BUG#6732 FLUSH TABLES WITH READ LOCK + COMMIT hangs later FLUSH TABLES |
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# WITH READ LOCK |
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connection con2; |
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commit; # unlock InnoDB row locks to allow insertions |
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connection con1; |
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begin; |
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insert into t1 values(10); |
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flush tables with read lock; |
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commit; |
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unlock tables; |
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connection con2; |
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flush tables with read lock; # bug caused hang here |
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unlock tables; |
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# BUG#7358 SHOW CREATE DATABASE fails if open transaction |
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begin; |
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select * from t1; |
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show create database test; |
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drop table t1; |
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# End of 4.1 tests |