55 lines
1.8 KiB
Plaintext
55 lines
1.8 KiB
Plaintext
###############################################################################
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#
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# Bug#21697821 RELAYLOG.LOG_LOCK IS NOT RELEASED IN
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# AN ERROR CASE (IN NEXT_EVENT())
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#
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# Problem: In an error case, relaylog.log_lock acquired by SQL thread is not
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# released which is causing all threads, which are looking to acquire
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# the lock, to hang forever.
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#
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# Steps to reproduce:
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#
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# 1) Inject sql thread error using a simulation point and start SQL thread.
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#
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# 2) Wait till SQL thread goes down (before fix, it wont release the log_lock).
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#
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# 3) start SQL thread (before fix, it will wait for log_lock)
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#
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# 4) After the fix, make sure the replication is working fine.
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#
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###############################################################################
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--source include/have_debug.inc
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--source include/have_binlog_format_statement.inc
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--let rpl_skip_start_slave=1
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--source include/master-slave.inc
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# Step 1) Set a simulation on Slave SQL thread so that it enters
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# into faulty code (before fix) path.
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--source include/rpl_connection_slave.inc
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CALL mtr.add_suppression("Relay log read failure");
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SET @save_debug=@@GLOBAL.debug;
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SET GLOBAL debug="d,force_sql_thread_error";
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# Start SQL thread
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START SLAVE SQL_THREAD;
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# Step 2) Wait for SQL thread to go down with the injected error.
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# Before fix, SQL thread would not have released
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# relay_log.log_lock.
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--let $slave_sql_errno= convert_error(ER_SLAVE_RELAY_LOG_READ_FAILURE)
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--source include/wait_for_slave_sql_to_stop.inc
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# Step 3) Before fix, when SQL thread is trying to acquire
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# relay_log.log_lock which was not released will hang
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# forever.
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SET GLOBAL debug=@save_debug;
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--source include/start_slave.inc
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# Step 4) Execute dummy statements on master and see that it
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# replication is working fine.
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--source include/rpl_connection_master.inc
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CREATE TABLE t1(i INT);
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DROP TABLE t1;
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--source include/rpl_end.inc
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