On Sun, Jul 5, 2020 at 2:24 AM Jeff Davis <pgsql@j-davis.com> wrote:
>
> On Sat, 2020-07-04 at 14:49 +0530, Amit Kapila wrote:
> > > We don't even have a user report yet of a
> > > regression compared to PG 12, or one that can't be fixed by
> > > increasing
> > > work_mem.
> > >
> >
> > Yeah, this is exactly the same point I have raised above. I feel we
> > should wait before designing any solution to match pre-13 behavior
> > for
> > hashaggs to see what percentage of users face problems related to
> > this
> > and how much is a problem for them to increase work_mem to avoid
> > regression.
>
> I agree that it's good to wait for actual problems. But the challenge
> is that we can't backport an added GUC.
>
Is it because we won't be able to edit existing postgresql.conf file
or for some other reasons?
--
With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com