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The test case runs SHOW SLAVE HOSTS. The output of this is only stable after all slaves have had time to register with the master; this happens asynchroneously. The test was waiting for the slave with server_id=3 to appear in the output, but it was missing a similar wait for server_id=2. Thus, if server_id=2 was much slower to connect for some reason, it could be missing from the output, causing the test to fail.
52 lines
1.9 KiB
Text
52 lines
1.9 KiB
Text
###############################################################################
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# Bug#13963 SHOW SLAVE HOSTS is unreliable
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#
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# Slaves only appear in the output of SHOW SLAVE HOSTS when report-host option
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# is set. If an expected slave does not appear in the list, nobody knows
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# whether the slave does not connect or has started without the "report-host"
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# option.
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#
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# Remove the "Rpl_recovery_rank" column from SHOW SLAVE HOSTS, It is not
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# implemented.
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#######################################################################
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source include/master-slave.inc;
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connect (slave2,127.0.0.1,root,,test,$SLAVE_MYPORT2,);
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connection slave2;
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RESET SLAVE;
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--replace_result $MASTER_MYPORT MASTER_PORT
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--eval CHANGE MASTER TO master_host='127.0.0.1',master_port=$MASTER_MYPORT,master_user='root'
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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 master;
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let $show_statement= SHOW SLAVE HOSTS;
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let $field= Server_id;
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# 3 is server_id of slave2.
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let $condition= ='3';
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source include/wait_show_condition.inc;
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# Make sure that the other slave also had time to register. Otherwise we get
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# occasional spurious failures where server_id=2 is missing from SHOW SLAVE
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# HOSTS, when that slave is much slower to register due to thread scheduling.
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let $condition= ='2';
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source include/wait_show_condition.inc;
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--replace_column 3 'SLAVE_PORT'
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--replace_result $SLAVE_MYPORT SLAVE_PORT $DEFAULT_MASTER_PORT DEFAULT_PORT
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SHOW SLAVE HOSTS;
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connection slave2;
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--source include/stop_slave_io.inc
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connection master;
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let $show_statement= SHOW SLAVE HOSTS;
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let $field= Server_id;
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# 3 is server_id of slave2.
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let $condition= <> '3';
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# All rows of 'SHOW SLAVE HOSTS' are not equal to 3. It mean that master has
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# knew the leave of slave2 and has unregistered it.
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let $wait_for_all= 1;
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source include/wait_show_condition.inc;
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--replace_result $SLAVE_MYPORT SLAVE_PORT
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SHOW SLAVE HOSTS;
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--source include/rpl_end.inc
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