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MDEV-20220: Merge 5.7 P_S replication table 'replication_applier_status_by_worker

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Step 3:
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Preserve worker pool information on either STOP SLAVE/Error.  In case STOP
SLAVE is executed worker threads will be gone, hence worker threads will be
unavailable. Querying the table at this stage will give empty rows. To
address this case when worker threads are about to stop, due to an error or
forced stop, create a backup pool and preserve the data which is relevant to
populate performance schema table. Clear the backup pool upon slave start.
This commit is contained in:
Sujatha
2021-04-08 17:12:59 +05:30
parent 036ee61246
commit f9bd7f2012
8 changed files with 260 additions and 2 deletions
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6
mysql-test/suite/rpl/t/rpl_parallel_retry.test
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@@ -149,6 +149,12 @@ let $new_retry= query_get_value(SHOW STATUS LIKE 'Slave_retried_transactions', V
--disable_query_log
eval SELECT $new_retry - $old_retry AS retries;
--enable_query_log
let $ps_value= query_get_value(select last_trans_retry_count from
performance_schema.replication_applier_status_by_worker where
last_trans_retry_count > 0, last_trans_retry_count, 1);
let $assert_text= Performance Schema retries should match with actual retries;
let $assert_cond= "$ps_value" = $new_retry - $old_retry;
source include/assert.inc;
SELECT * FROM t1 ORDER BY a;
STOP SLAVE IO_THREAD;