Andres Freund <and...@anarazel.de> writes:
> On 2021-05-16 18:21:21 -0400, Tom Lane wrote:
>> Hm, yeah. I'm not sure if transferring the value forward from the
>> old cluster is entirely safe, but if it is, that seems like a
>> promising route to a fix. (We should still have more sanity checking
>> around the GlobalVis code, though.)
> Why would it not be safe?
I'm just wondering about the catalog tuples set up by pg_upgrade
itself. If they're all frozen then they probably don't matter to
this, but it might take some thought.
> I think we should remove the heuristic thing from pg_resetwal entirely,
> and error out if next-xid is set to something too far away from oldest
> xid, unless oldexid is also specified.
Seems plausible ...
regards, tom lane
