mirror of
https://github.com/MariaDB/server.git
synced 2025-02-22 05:13:08 +01:00
063f4ac25e
MDEV-31749 sporadic assert in MDEV-30619 new test If the workers of a parallel replica are busy (potentially with long queues), but the SQL thread has no events left to distribute (so it goes idle), then the next event that comes from the primary will update mi->last_master_timestamp with its timestamp, even if the workers have not yet finished. This patch changes the parallel replica logic which updates last_master_timestamp after idling from using solely sql_thread_caught_up (added in MDEV-29639) to using the latter with rli queued/dequeued event counters. That is, if the queued count is equal to the dequeued count, it means all events have been processed and the replica is considered idle when the driver thread has also distributed all events. Low level details of the commit include - to make a more generalized test for Seconds_Behind_Master on the parallel replica, rpl_delayed_parallel_slave_sbm.test is renamed to rpl_parallel_sbm.test for this purpose. - pause_sql_thread_on_next_event usage was removed with the MDEV-30619 fixes. Rather than remove it, we adapt it to the needs of this test case - added test case to cover SBM spike of relay log read and LMT update that was fixed by MDEV-29639 - rpl_seconds_behind_master_spike.test is made to use the negate_clock_diff_with_master debug eval. Reviewed By: ============ Andrei Elkin <andrei.elkin@mariadb.com>
1 line
27 B
Text
1 line
27 B
Text
--slave-parallel-threads=2
|