Re: PoC: Partial sort

On Fri, Apr 8, 2016 at 10:09 PM, Peter Geoghegan <pg@heroku.com> wrote:

On Wed, Mar 30, 2016 at 8:02 AM, Alexander Korotkov
<aekorotkov@gmail.com> wrote:
> Hmm... I'm not completely agree with that. In typical usage partial sort
> should definitely use quicksort.  However, fallback to other sort methods is
> very useful.  Decision of partial sort usage is made by planner.  But
> planner makes mistakes.  For example, our HashAggregate is purely in-memory.
> In the case of planner mistake it causes OOM.  I met such situation in
> production and not once.  This is why I'd like partial sort to have graceful
> degradation for such cases.

I think that this should be moved to the next CF, unless a committer
wants to pick it up today.

------
Alexander Korotkov
Postgres Professional: http://www.postgrespro.com