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| author | unknown <knielsen@knielsen-hq.org> | 2014-03-04 08:48:32 +0100 |
|---|---|---|
| committer | unknown <knielsen@knielsen-hq.org> | 2014-03-04 08:48:32 +0100 |
| commit | ec374f1e53fc384bca65f9ab51dd5e0f4af20a1e (patch) | |
| tree | 4de7df8073eefdb9093519d58dcae9ac5c4ba1e2 /sql/rpl_parallel.h | |
| parent | 641feed481800d9baadc492a293723da274d8ed6 (diff) | |
| download | mariadb-git-ec374f1e53fc384bca65f9ab51dd5e0f4af20a1e.tar.gz | |
MDEV-5769: Slave crashes on attempt to do parallel replication from an older master
Older master has no GTID events, so such events are not available for
deciding on scheduling of event groups and so on.
With this patch, we run such events from old masters single-threaded, in the
sql driver thread.
This seems better than trying to make the parallel code handle the data from
older masters; while possible, this would require a lot of testing (as well as
possibly some extra overhead in the scheduling of events), which hardly seems
worthwhile.
Diffstat (limited to 'sql/rpl_parallel.h')
| -rw-r--r-- | sql/rpl_parallel.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/sql/rpl_parallel.h b/sql/rpl_parallel.h index 31a6a035dd8..128ef698240 100644 --- a/sql/rpl_parallel.h +++ b/sql/rpl_parallel.h @@ -225,8 +225,7 @@ struct rpl_parallel { void wait_for_done(THD *thd, Relay_log_info *rli); void stop_during_until(); bool workers_idle(); - bool do_event(rpl_group_info *serial_rgi, Log_event *ev, - ulonglong event_size); + int do_event(rpl_group_info *serial_rgi, Log_event *ev, ulonglong event_size); }; |