On Fri, Jul 31, 2020 at 3:05 PM Andres Freund <and...@anarazel.de> wrote: > The page could have been wrongly marked all-frozen. There could be > interactions between heap and toast table that are checked. Other bugs > could apply, like a broken hot chain or such.
OK, at least the first two of these do sound like problems. Not sure about the third one. > > If we do need to do something special in terms of advertising xmin, > > how would you do it? Normally it happens by registering a snapshot, > > but here all we would have is an XID; specifically, the value of > > relfrozenxid that we observed. > > An appropriate procarray or snapmgr function would probably suffice? Not sure; I guess that'll need some investigation. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company
