Hi, On 2019-03-04 22:00:47 +0000, Bossart, Nathan wrote: > On 3/4/19, 1:44 PM, "Andres Freund" <and...@anarazel.de> wrote: > > Yea, I do think that's a danger. But we allow disabling autovacuum, so > > I'm not sure it matters that much... And for indexes you'd still have > > the index page-level vacuum that'd continue to work. > > I think the difference here is that there isn't something like > autovacuum_freeze_max_age to force index cleanup at some point. > Granted, you can set autovacuum_freeze_max_age to 2B if you want, but > at least there's a fallback available.
Well, but your cluster doesn't suddenly shut down because of index bloat (in contrast to xid wraparound). So I don't quite see an equivalent need for an emergency valve. I think we should just put a warning into the reloption's docs, and leave it at that. Greetings, Andres Freund
