On 3/4/19, 2:05 PM, "Andres Freund" <and...@anarazel.de> wrote: > 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.
That seems reasonable to me. Nathan
