Re: BUG #15323: wal_keep_segments must be >= 1 for WAL archiving + streaming to work

Andres,

* Andres Freund (andres(at)anarazel(dot)de) wrote:
> On 2018-08-13 11:22:11 -0400, Stephen Frost wrote:
> > Greetings,
> >
> > * Andres Freund (andres(at)anarazel(dot)de) wrote:
> > > On August 13, 2018 4:59:32 PM GMT+02:00, Phil Endecott <spam_from_pgsql_lists(at)chezphil(dot)org> wrote:
> > > but in general, I think it's still
> > > >possible
> > > >that the master will remove the segment that is needed to start
> > > >streaming.
> > >
> > > That's why I told you about replication slots....
> >
> > This should really work even without replication slots though.
>
> Why? I fail to see what'd be gained by adding "always retain one
> segment" rule. It'd not make the setup any more reliable. If anything
> it'd make it harder to spot issues in test setups.

What exactly is wrong with the setup where this should be failing?

Thanks!

Stephen