| From: | Alexander Korotkov <aekorotkov(at)gmail(dot)com> |
|---|---|
| To: | Peter Geoghegan <pg(at)heroku(dot)com> |
| Cc: | Andreas Karlsson <andreas(at)proxel(dot)se>, David Rowley <dgrowleyml(at)gmail(dot)com>, Marti Raudsepp <marti(at)juffo(dot)org>, Robert Haas <robertmhaas(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>, Andres Freund <andres(at)2ndquadrant(dot)com>, Martijn van Oosterhout <kleptog(at)svana(dot)org> |
| Subject: | Re: PoC: Partial sort |
| Date: | 2015-10-20 11:17:26 |
| Message-ID: | CAPpHfds7bKqPnMEC7zne8XXVTp3kX1DyF_vq1PZxtNvTmJAhFg@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Fri, Oct 16, 2015 at 7:11 PM, Alexander Korotkov <aekorotkov(at)gmail(dot)com>
wrote:
> On Sun, Jun 7, 2015 at 11:01 PM, Peter Geoghegan <pg(at)heroku(dot)com> wrote:
>
>> On Sun, Jun 7, 2015 at 8:10 AM, Andreas Karlsson <andreas(at)proxel(dot)se>
>> wrote:
>> > Are you planning to work on this patch for 9.6?
>>
>> FWIW I hope so. It's a nice patch.
>>
>
> I'm trying to to whisk dust. Rebased version of patch is attached. This
> patch isn't passing regression tests because of plan changes. I'm not yet
> sure about those changes: why they happens and are they really regression?
> Since I'm not very familiar with planning of INSERT ON CONFLICT and RLS,
> any help is appreciated.
>
Planner regression is fixed in the attached version of patch. It appears
that get_cheapest_fractional_path_for_pathkeys() behaved wrong when no
ordering is required.
------
Alexander Korotkov
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company
| Attachment | Content-Type | Size |
|---|---|---|
| partial-sort-basic-4.patch | application/octet-stream | 74.3 KB |
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