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79 lines
1.6 KiB
Plaintext
79 lines
1.6 KiB
Plaintext
# 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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# This test doesn't work with the embedded server
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-- source include/not_embedded.inc
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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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