Re: multivariate statistics v14

From: Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>
To: Robert Haas <robertmhaas(at)gmail(dot)com>, David Steele <david(at)pgmasters(dot)net>
Cc: Tatsuo Ishii <ishii(at)postgresql(dot)org>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Álvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Petr Jelinek <petr(at)2ndquadrant(dot)com>, Jeff Janes <jeff(dot)janes(at)gmail(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: multivariate statistics v14
Date: 2016-04-08 18:55:24
Message-ID: 5d1d62a6-6228-188c-e079-c1be59942168@2ndquadrant.com
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On 04/08/2016 05:55 PM, Robert Haas wrote:
> On Tue, Mar 29, 2016 at 11:18 AM, David Steele <david(at)pgmasters(dot)net> wrote:
>> On 3/28/16 4:42 AM, Tomas Vondra wrote:
>>> Yes, those are valid omissions. I plan to address them, and I'd also
>>> considering adding a section to 65.1 (How the Planner Uses Statistics),
>>> explaining more thoroughly how the planner uses multivariate stats.
>>
>> It looks you need post a new patch so I have marked this "waiting on
>> author".
>
> Since no new version of this patch has been posted in the last 10
> days, it seems clear that there will not be time for this to
> reasonably become ready for committer and then get committed in the
> few hours remaining before the deadline. That is a bummer, since I
> was hoping we would have this feature in this release, but hopefully
> we will get it into 9.7. I am marking it Returned with Feedback.
>

Well, me to. But my feeling is the patch received entirely insufficient
amount of thorough code review, considering how important part of the
code it touches. I agree docs are an important part of a patch, but
polishing user-level docs would hardly move the patch closer to being
committable (especially when there's ~50kB of READMEs).

regards

--
Tomas Vondra http://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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