mirror of
https://github.com/MariaDB/server.git
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116 lines
3.5 KiB
Plaintext
116 lines
3.5 KiB
Plaintext
--source include/have_innodb.inc
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--source include/not_windows.inc
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--source include/not_valgrind.inc
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--source include/not_embedded.inc
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# DEBUG_SYNC must be compiled in.
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--source include/have_debug_sync.inc
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connect (con1,localhost,root,,);
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connect (con2,localhost,root,,);
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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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connection con1;
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eval create table t1 (id integer, x integer) engine = InnoDB;
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insert into t1 values(0, 0);
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# Enable the debug injection.
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SET @saved_dbug = @@SESSION.debug_dbug;
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set DEBUG_DBUG='+d,fatal-semaphore-timeout';
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set autocommit=0;
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# The following query will hang for an hour since the debug injection
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# code will sleep an hour after holding the lock table mutex
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--echo # Sending query on con1,
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--echo # the session will hold lock table mutex and sleep
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--send
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SELECT * from t1 where id = 0 FOR UPDATE;
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# To make sure con1 holding the lock table mutex and sleeping
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--sleep 2
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connection con2;
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set autocommit=0;
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# The following query will be blocked on the lock table mutex held by
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# con1 so it will be put into sync array.
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--echo # Sending query on con2,
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--echo # the session will be blocked on the lock table mutex and
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--echo # thus be put into sync arry
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--send
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SELECT * from t1 where id = 0 FOR UPDATE;
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# Waitting for mysqld to abort due to fatal semaphore timeout.
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# Please note that, in the master.opt file, the fatal timeout
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# was set to 1 second, but in mysqld debug mode, this timeout
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# value will be timed 10 because UNIV_DEBUG_VALGRIND is set
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# (see sync_array_print_long_waits_low() in storage/innobase/sync/sync0arr.cc)
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# so the actual timeout will be 1 * 10 = 10 seconds. Besides,
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# mysqld will abort after detecting this fatal timeout 10 times in
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# a loop with interval of 1 second (see srv_error_monitor_thread
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# thread in torage/innobase/srv/srv0srv.cc), so mysqld will abort
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# in 1 * 10 + 1 * 10 = 20 seconds after con2 being blocked on
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# the lock table mutex.
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#
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# P.S. the default fatal sempahore timeout is 600 seconds,
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# so mysqld will abort after 600 * 10 + 1 * 10 = 6010 seconds
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# in debug mode and 600 + 1 * 10 = 610 seconds in release mode.
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connection default;
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--disable_result_log
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--disable_query_log
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# Since this test generates lot of errors in log, suppress checking errors
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call mtr.add_suppression(".*");
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# The crash is expected
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exec echo "restart" > $MYSQLTEST_VARDIR/tmp/mysqld.1.expect;
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--echo # Waitting for mysqld to crash
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# It will take 20 seconds to detect the long semaphore and mysqld to abort.
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# This test will be treated as pass as long as mysqld crash/restart is dectected
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# in 80 seconds.
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let $counter= 80;
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let $mysql_errno= 0;
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while (!$mysql_errno)
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{
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--error 0,ER_SERVER_SHUTDOWN,ER_CONNECTION_KILLED,2002,2006,2013
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show status;
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--error 0,ER_SERVER_SHUTDOWN,ER_CONNECTION_KILLED,2002,2006,2013
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select * from information_schema.innodb_sys_semaphore_waits;
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dec $counter;
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if (!$counter)
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{
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# This will fail this test.
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--die Server failed to dissapear
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}
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--sleep 1
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}
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--echo # Mysqld crash was detected
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--echo # Waitting for reconnect after mysqld restarts
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enable_reconnect;
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connection default;
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--exec echo "restart:--log-error=$error_log" > $MYSQLTEST_VARDIR/tmp/mysqld.1.expect
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# Call script that will poll the server waiting for it to be back online again
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source include/wait_until_connected_again.inc;
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--echo # Reconnected after mysqld was successfully restarted
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--echo # Cleaning up before exit
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--disable_warnings
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SET debug_dbug = @saved_dbug;
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drop table if exists t1;
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--enable_warnings
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--echo # Clean exit
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