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65 lines
2.3 KiB
Text
65 lines
2.3 KiB
Text
#
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# MDEV-6619 SHOW PROCESSLIST returns empty result set after KILL QUERY
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#
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--source include/not_embedded.inc
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--source include/have_debug_sync.inc
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# Ensure no lingering connections from an earlier test run, which can very
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# rarely still be visible in SHOW PROCESSLIST here.
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--let $wait_condition= SELECT COUNT(*) = 1 from information_schema.processlist
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--source include/wait_condition.inc
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# This is to ensure that the following SHOW PROCESSLIST does not show the query
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#
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# The use of DEBUG_SYNC here is quite tricky, and there were several bugs in
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# this test case before. The dispatch_command_end* sync points will trigger at
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# the end of the statement that sets them, so we need to use EXECUTE 2/3 to
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# make them trigger also during the "select 1" statement. And we need to use
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# two separate sync points so that we can wait first and signal after;
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# otherwise the last wait from dispatch_command_end may time out as its signal
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# gets overridden from the later sync point "before_execute_sql_command".
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#
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SET DEBUG_SYNC='dispatch_command_end2 SIGNAL ready EXECUTE 3';
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--connect (con1,localhost,root,,)
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SET DEBUG_SYNC='now wait_for ready';
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--connection default
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SET DEBUG_SYNC='dispatch_command_end WAIT_FOR go EXECUTE 2';
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--send select 1
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--connection con1
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SET DEBUG_SYNC='now signal go';
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SET DEBUG_SYNC='now wait_for ready';
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SET DEBUG_SYNC='now signal go';
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SET DEBUG_SYNC='now wait_for ready';
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SET DEBUG_SYNC='RESET';
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--let $con_id = `SELECT CONNECTION_ID()`
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--replace_result Execute Query
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--replace_column 1 # 3 # 6 # 7 #
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SHOW PROCESSLIST;
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SET DEBUG_SYNC='before_execute_sql_command SIGNAL ready WAIT_FOR go';
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send SHOW PROCESSLIST;
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--connection default
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--reap
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# We must wait for the SHOW PROCESSLIST query to have started before sending
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# the kill. Otherwise, the KILL may be lost since it is reset at the start of
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# query execution.
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SET DEBUG_SYNC='now WAIT_FOR ready';
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--replace_result $con_id con_id
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eval KILL QUERY $con_id;
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SET DEBUG_SYNC='now SIGNAL go';
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--connection con1
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--error ER_QUERY_INTERRUPTED
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reap;
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SET DEBUG_SYNC='reset';
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# Wait until default connection has reset query string
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let $wait_condition=
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SELECT COUNT(*) = 1 from information_schema.processlist
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WHERE Command = "Sleep" AND info is NULL;
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--source include/wait_condition.inc
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--replace_result Execute Query
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--replace_column 1 # 3 # 6 # 7 #
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SHOW PROCESSLIST;
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