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103 lines
3.1 KiB
Text
103 lines
3.1 KiB
Text
#
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# Testing chain/circular replication scenario of MDEV-9670
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# The effect of the bug was that we got a commit with a GTID with server_id
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#
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--source include/have_binlog_format_row.inc
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--source include/have_innodb.inc
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--source include/have_debug.inc
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--source include/have_debug_sync.inc
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--let $rpl_topology= 1->2->1
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--source include/rpl_init.inc
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--let $rpl_connection_name= M4
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--let $rpl_server_number= 1
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--source include/rpl_connect.inc
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--let $rpl_connection_name= M2
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--let $rpl_server_number= 2
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--source include/rpl_connect.inc
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# The parameter reflects binlog-row-event-max-size @cnf.
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--let $row_size=1024
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--connection M2
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STOP SLAVE;
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SET @old_debug= @@global.debug_dbug;
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SET GLOBAL debug_dbug= "d,dbug.rows_events_to_delay_relay_logging";
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START SLAVE IO_THREAD;
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--source include/wait_for_slave_io_to_start.inc
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--connection M2
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# This query also creates a Gtid event group whose Gtid will remain in
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# ignored status for too long causing a following group split.
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CREATE TABLE t1 (a INT AUTO_INCREMENT PRIMARY KEY, b VARCHAR(30000)) ENGINE=innodb;
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--sync_slave_with_master M4
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# This INSERT will be logged as two Write_log events which the buggy
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# slave applier would split.
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--connection M4
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eval INSERT INTO `t1` VALUES (null, repeat('a', $row_size)), (null, repeat('b', $row_size));
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# START M2 IO thread and wait for its signal to follow with the SQL
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# thread start. At this moment the SQL thread shall be having 2 and
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# "half" groups to execute. The "hafl" one would be committed by the
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# buggy applier after which the IO is released to queue the rest of
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# the 3rd group which the SQL thread commits separately to complete
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# the split.
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--connection M2
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# wait for IO signal to start the SQL thread. IO will be hanging upon that.
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SET debug_sync='now WAIT_FOR start_sql_thread';
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# Now the slave server has relay log whose last group is incomplete.
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# An unfixed slave server would go to "insert" a "fake"
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# Gtid_list_log_event event which actually would commit the incomplete
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# group. However before to actual commit do_apply_event() hits some assert.
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# In the fixed server the fake Gtid_list_log_event is *not* inserted
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# in the middle of a group.
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START SLAVE SQL_THREAD;
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# Sleep for a little time to give SQL thread a chance to commit while
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# the IO thread is hanging (see
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# DBUG_EXECUTE_IF("dbug.rows_events_to_delay_relay_logging"...) in
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# queue_event). Alternatively to reproduce the case when buggy slave
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# wait for the 1st group commit
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#--let $count= 1
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#--let $table= t1
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#--source include/wait_until_rows_count.inc
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--sleep 2
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# Demonstrate either no split group in the correct slave or the 1nd
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# group in the buggy one
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--source include/show_binlog_events.inc
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# Release the IO thread
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SET debug_sync='now SIGNAL go_on_relay_logging';
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# Sync servers
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--sync_slave_with_master M4
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--connection M4
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--sync_slave_with_master M2
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--connection M2
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# Demonstrate replication goes correctly not to create any split, or
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# the 2nd group in the buggy slave
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--source include/show_binlog_events.inc
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#
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# Cleanup
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#
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--connection M4
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drop table t1;
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--connection M2
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SET GLOBAL debug_dbug= @old_debug;
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SET debug_sync='RESET';
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--source include/rpl_end.inc
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