Re: pgsql: Fix race in test of pg_switch_wal().

On Mon, Sep 14, 2020 at 05:27:07PM +0900, Michael Paquier wrote:
> On Mon, Sep 14, 2020 at 06:19:38AM +0000, Noah Misch wrote:
> > Fix race in test of pg_switch_wal().
> > 
> > The test failed when something added WAL between pg_switch_wal() and
> > pg_current_wal_lsn(), seen on buildfarm members hornet and sungazer.
> > Fix v10, v9.6 and v9.5 by making this code mirror its v13+ counterpart.
> > v12 and v11 lack a counterpart.
> 
> Thanks Noah for that, I did not notice those buildfarm failures:
> https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=hornet&dt=2020-07-24%2010%3A24%3A56
> 
> It is fine to ping me or just to begin a thread if there is a problem,
> I would have taken care of it.

There's a new 020_archive_status.pl failure:
https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=mandrill&dt=2020-10-05%2023%3A02%3A17

Would you like to diagnose/fix that one?