On Fri, May 29, 2015 at 3:09 PM, Magnus Hagander <mag...@hagander.net> wrote: > Do you have any feeling of how likely people are to actually hit the > multixact one? I've followed some of that impressive debugging you guys did, > and I know it's a pretty critical bug if you hit it, but how wide-spread > will it be?
That precise problem has been reported a few times, but it may not be widespread. I don't know. My bigger concern is that, at present, taking a base backup is broken. I haven't figured out the exact reproduction scenario, but I think it's something like this: - begin base backup - checkpoint happens, truncating pg_multixact - at this point pg_multixact gets copied - end base backup I think what will happen on replay is that replaying the checkpoint, it will try to reference pg_multixact files that don't exist any more and die with a fatal error. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
