73 lines
1.7 KiB
PHP
73 lines
1.7 KiB
PHP
# include/wait_innodb_all_purged.inc
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#
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# SUMMARY
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#
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# Waits until purged all undo records of innodb, or operation times out.
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#
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# USAGE
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#
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# --source include/wait_innodb_all_purged.inc
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#
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--let $is_debug= `select (version() like '%debug%') as debug`
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if ($is_debug)
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{
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--disable_query_log
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let $wait_counter_init= 300;
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if ($wait_timeout)
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{
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let $wait_counter_init= `SELECT $wait_timeout * 10`;
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}
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# Reset $wait_timeout so that its value won't be used on subsequent
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# calls, and default will be used instead.
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let $wait_timeout= 0;
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let $wait_counter= $wait_counter_init;
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# Keep track of how many times the wait condition is tested
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let $wait_condition_reps= 0;
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let $prev_trx_age= 0;
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let $age_log=0;
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while ($wait_counter)
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{
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--disable_warnings
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let $trx_age = `SELECT VARIABLE_VALUE FROM performance_schema.global_status
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WHERE VARIABLE_NAME = 'INNODB_PURGE_TRX_SCN_AGE';`;
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# Don't wait for purge blocked by active ReadView(s)
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let $trx_view_age = `SELECT VARIABLE_VALUE FROM performance_schema.global_status
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WHERE VARIABLE_NAME = 'INNODB_PURGE_VIEW_TRX_SCN_AGE';`;
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--enable_warnings
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if ($trx_age != $prev_trx_age)
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{
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let $age_log=$age_log:$wait_condition_reps $trx_age;
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let $wait_counter= $wait_counter_init;
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let $prev_trx_age= $trx_age;
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}
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let $success= `SELECT $trx_age <= $trx_view_age`;
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inc $wait_condition_reps;
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if ($success)
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{
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let $wait_counter= 0;
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}
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if (!$success)
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{
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set global innodb_purge_run_now=ON;
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real_sleep 0.1;
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dec $wait_counter;
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}
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}
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if (!$success)
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{
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let $age_log=$age_log:$wait_condition_reps;
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echo INNODB_PURGE_TRX_SCN_AGE = $trx_age (previous id:count $age_log);
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die Timeout in wait_innodb_all_purged.inc;
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}
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--enable_query_log
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}
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