Re: Remove Deprecated Exclusive Backup Mode

Greetings,

* Magnus Hagander (magnus(at)hagander(dot)net) wrote:
> On Mon, Feb 18, 2019 at 6:13 AM David Steele <david(at)pgmasters(dot)net> wrote:
> > On 2/16/19 5:57 AM, Andres Freund wrote:
> > > On 2019-01-05 13:19:20 -0500, Stephen Frost wrote:
> > >> * Peter Eisentraut (peter(dot)eisentraut(at)2ndquadrant(dot)com) wrote:
> > >>> On 12/12/2018 05:31, Robert Haas wrote:
> > >>>> Most of the features I've been involved in removing have been
> > >>>> deprecated for 5+ years. The first release where this one was
> > >>>> deprecated was only 2 years ago. So it feels dramatically faster to
> > >>>> me than what I think we have typically done.
> > >>>
> > >>> I was just looking this up as well, and I find it too fast. The
> > >>> nonexclusive backups were introduced in 9.6. So I'd say that we could
> > >>> remove the exclusive ones when 9.5 goes EOL. (That would mean this
> > >>> patch could be submitted for PostgreSQL 13, since 9.5 will go out of
> > >>> support around the time PG13 would be released.)
> > >>
> > >> I don't agree with either the notion that we have to wait 5 years in
> > >> this case or that we've only had a good alternative to the exclusive
> > >> backup mode since 9.5 as we've had pg_basebackup since 9.1.
> > >
> > > I don't agree with a general 5 year deprecation window either. But it
> > > seems pretty clear that there's no majority for removing exclusive
> > > backups in v12. I think it'd be good to make the warning about its
> > > impending death more explicit, but otherwise mark this CF entry either
> > > as rejected or returned with feedback.
> >
> > I think there is support for the patch in PG13 so I was planning to move
> > it out of the March CF to the first PG13 CF as soon as the app will
> > allow it, i.e., once there is only a single open CF.
>
> Agreed, and I think we should also update the documentation for 12 with the
> suggested more explicit mention of the deprecation.

+1.

Thanks!

Stephen