database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-08-07 00:04:31 +03:00
Code Activity

MDEV-5189: Incorrect parallel apply in parallel replication

Browse Source 
Two problems were fixed:

1. When not in GTID mode (master_use_gtid=no), then we must not apply events
   in different domains in parallel (in non-GTID mode we are not capable of
   restarting at different points in different domains).

2. When transactions B and C group commit together, but after and separate
   from A, we can apply B and C in parallel, but both B and C must not start
   until A has committed. Fix sub_id to be globally increasing (not just
   per-domain increasing) so that this wait (which is based on sub_id) can be
   done correctly.
This commit is contained in:
unknown
2013-10-25 21:17:14 +02:00
parent 80d0dd7bab
commit 6a38b59475
3 changed files with 10 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
sql/rpl_parallel.cc
View File

@@ -657,8 +657,10 @@ rpl_parallel::do_event(rpl_group_info *serial_rgi, Log_event *ev,
if (typ == GTID_EVENT)
{
Gtid_log_event *gtid_ev= static_cast<Gtid_log_event *>(ev);
uint32 domain_id= (rli->mi->using_gtid == Master_info::USE_GTID_NO ?
0 : gtid_ev->domain_id);
if (!(e= find(gtid_ev->domain_id)) ||
if (!(e= find(domain_id)) ||
!(rgi= new rpl_group_info(rli)) ||
event_group_new_gtid(rgi, gtid_ev))
{