Simon Riggs wrote: > commit 02c3eadb766201db084b668daa271db4a900adc9 > Author: Simon Riggs <sri...@ebony.(none)> > Date: Sat Nov 28 06:23:33 2009 +0000 > > Added wal_standby_info GUC to turn RM_STANDBY_ID messages on/off. > Various comments added also. >
This patch makes it unsafe to start hot standby mode from a shutdown checkpoint, because we don't know if wal_standby_info was enabled in the master. I still don't think we need the GUC. But for future-proofing, perhaps we should add a flag to shutdown checkpoint records, indicating whether it's safe to start hot standby from it. That way, if we decide to add a GUC like that at a later stage, we don't need to change the on-disk format. -- Heikki Linnakangas EnterpriseDB http://www.enterprisedb.com -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
