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54 lines
1.4 KiB
PHP
54 lines
1.4 KiB
PHP
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# include/wait_for_purge.inc
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#
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# SUMMARY
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#
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# Repeatedly attempt to purge binlogs up to a specific point, until
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# SHOW BINARY LOGS shows it has succeeded.
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# This can be useful to avoid races where slaves are stopped but the
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# corresponding binlog dump thread on the master has not yet terminated.
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# Async binlog checkpoints can also delay purge.
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#
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# Note that it may be necessary to inject at least one event in the binlog
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# after stopping slaves, or master may not detect stop of slave for a long
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# time (or forever), depending on details of test case, if replication
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# heartbeat is enabled, etc.
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#
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# USAGE:
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#
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# --let $purge_binlogs_to=master-bin.000003
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# --source include/wait_for_purge.inc
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#
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# SIDE EFFECTS:
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#
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# Disables --query_log while running, enables it afterwards.
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--echo include/wait_for_purge.inc "$purge_binlogs_to"
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let $_wait_count= 300;
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let $_done= 0;
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--disable_query_log
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while ($_wait_count)
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{
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dec $_wait_count;
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eval PURGE BINARY LOGS TO "$purge_binlogs_to";
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let $_cur_binlog= query_get_value(SHOW BINARY LOGS, Log_name, 1);
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if (`SELECT "$_cur_binlog" = "$purge_binlogs_to"`)
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{
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let $_done= 1;
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let $_wait_count= 0;
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}
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if ($_wait_count)
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{
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real_sleep 0.1;
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}
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}
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if (!$_done)
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{
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SHOW FULL PROCESSLIST;
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eval SHOW BINARY LOGS;
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--die ERROR: failed while waiting for binlog purge to $purge_binlogs_to
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}
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--enable_query_log
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