From: | Andres Freund <andres(at)anarazel(dot)de> |
---|---|
To: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> |
Cc: | Maxim Boguk <maxim(dot)boguk(at)gmail(dot)com>, Peter Geoghegan <pg(at)bowt(dot)ie>, Jeremy Finzel <finzelj(at)gmail(dot)com>, Postgres General <pgsql-general(at)postgresql(dot)org> |
Subject: | Re: found xmin from before relfrozenxid on pg_catalog.pg_authid |
Date: | 2018-05-24 21:17:38 |
Message-ID: | 20180524211738.i2hr3dokhv6eqrrr@alap3.anarazel.de |
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Lists: | pgsql-general pgsql-hackers |
On 2018-05-24 17:13:11 -0400, Alvaro Herrera wrote:
> On 2018-May-24, Andres Freund wrote:
>
> > On 2018-05-24 16:49:40 -0400, Alvaro Herrera wrote:
> > > BTW is it just a coincidence or are all the affected tables pg_authid?
> > > Maybe the problem is shared relations ..? Maybe the fact that they have
> > > separate relfrozenxid (!?) in different databases?
> >
> > Yes, that appears to be part of the problem. I've looked at a number of
> > shared relation related codepaths, but so far my theory is that the
> > relcache is wrong. Note that one of the reports in this thread clearly
> > had a different relcache relfrozenxid than in the catalog.
>
> Hmm ... is that because they read the values on different databases?
> Are you referring to the reports by Maxim Boguk? I see one value from
> template1, another value from template0.
I was referring to
https://www.postgresql.org/message-id/20180522193007.4bi5oluqb7c72oq2@alap3.anarazel.de
but you're right, it's possible that that's just caused by time passing
or different databases.
Greetings,
Andres Freund
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