On Fri, Jul 31, 2020 at 3:05 PM Andres Freund <andres@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
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