Re: found xmin from before relfrozenxid on pg_catalog.pg_authid

Hi,

On 2018-06-19 10:26:26 -0300, Matheus de Oliveira wrote:
> Hello friends.
>
> On Tue, Jun 12, 2018 at 3:31 PM, Andres Freund <andres(at)anarazel(dot)de> wrote:
>
> >
> > On 2018-06-11 17:39:14 -0700, Andres Freund wrote:
> > > I plan to go over the change again tomorrow, and then push. Unless
> > > somebody has comments before then, obviously.
> >
> > Done.
> >
> >
> Sorry to bother about this, but do you have any plan to do the minor
> release before planned due to this bug?

Unclear at this point. There's been discussion about it, without coming
to a conclusion.

> I'm pondering what is the best option to avoid a forced shutdown of this
> server:
> - should I just wait for a release (if it is soon, I would be fine)?
> - build PG from the git version by myself?
> - or is there a safer workaround to the problem? (not clear to me if
> deleting the `global/pg_internal.init` file is really the way to go, and
> the details, is it safe? Should I stop the server, delete, start?)

You should first make sure it's actually this problem - which tables are
holding back the xmin horizon? After that, yes, deleting the
global/pg_internal.init file is the way to go, and I can't think of a
case where it's problematic, even without stopping the server.

Greetings,

Andres Freund