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SHOW RELAYLOG EVENTS works for a slave with the empty name and its logs, but doesn't work for slaves with non-empty names (even if the name is set as default_master_connection.
In the test case below, the last two statements return empty lists, while there should be events in the log. If the same test case is run for an empty name instead of 'master1', it works all right.
The test case is supposed to be run with my.cnf from the multi_source suite. There is no need to add it as a separate file to the suite, because it will be a part of a bigger test (which is why it doesn't have a "cleanup" section).
cat relaylog_events.test
--connect (slave,127.0.0.1,root,,,$SERVER_MYPORT_3)
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--replace_result $SERVER_MYPORT_1 MYPORT_1
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eval change master 'master1' to
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master_port=$SERVER_MYPORT_1,
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master_host='127.0.0.1',
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master_user='root';
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start slave 'master1';
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set default_master_connection = 'master1';
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--source include/wait_for_slave_to_start.inc
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--connect (master1,127.0.0.1,root,,,$SERVER_MYPORT_1)
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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 (i int) engine=MyISAM;
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--save_master_pos
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--connection slave
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--sync_with_master 0,'master1'
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--let $datadir = `SELECT @@datadir`
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--list_files $datadir mysqld-relay-bin-master1.*
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show relaylog events in 'mysqld-relay-bin-master1.000002';
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show relaylog events;
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End of output:
mysqld-relay-bin-master1.000001
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mysqld-relay-bin-master1.000002
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show relaylog events in 'mysqld-relay-bin-master1.000002';
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Log_name Pos Event_type Server_id End_log_pos Info
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show relaylog events;
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Log_name Pos Event_type Server_id End_log_pos Info
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***Warnings generated in error logs during shutdown after running tests: multi_source.relay
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[MDEV-554]