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72 lines
1.8 KiB
Text
72 lines
1.8 KiB
Text
# 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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--source include/have_log_bin.inc
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# And it requires InnoDB
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--source include/have_log_bin.inc
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--source include/have_innodb.inc
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--echo # Save the initial number of concurrent sessions
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--source include/count_sessions.inc
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--echo # Establish connection con1 (user=root)
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connect (con1,localhost,root,,);
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--echo # Establish connection con2 (user=root)
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connect (con2,localhost,root,,);
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# FLUSH TABLES WITH READ LOCK should block writes to binlog too
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--echo # Switch to connection con1
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connection con1;
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CREATE TABLE t1 (a INT) ENGINE=innodb;
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RESET MASTER;
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SET AUTOCOMMIT=0;
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SELECT 1;
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--echo # Switch to connection con2
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connection con2;
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FLUSH TABLES WITH READ LOCK;
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--source include/show_binlog_events.inc
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--echo # Switch to connection con1
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connection con1;
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send INSERT INTO t1 VALUES (1);
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--echo # Switch to connection con2
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connection con2;
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sleep 1;
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--source include/show_binlog_events.inc
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UNLOCK TABLES;
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--echo # Switch to connection con1
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connection con1;
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reap;
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DROP TABLE t1;
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SET AUTOCOMMIT=1;
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# GLR blocks new transactions
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create table t1 (a int) engine=innodb;
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connection con1;
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flush tables with read lock;
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connection con2;
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begin;
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--send insert into t1 values (1);
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connection con1;
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let $wait_condition=
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select count(*) = 1 from information_schema.processlist
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where state = "Waiting for release of readlock" and
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info = "insert into t1 values (1)";
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--source include/wait_condition.inc
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unlock tables;
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connection con2;
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--reap
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commit;
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drop table t1;
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--echo # Switch to connection default and close connections con1 and con2
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connection default;
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disconnect con1;
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disconnect con2;
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--echo # Wait till all disconnects are completed
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--source include/wait_until_count_sessions.inc
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