Re: Block level parallel vacuum WIP

From: Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>
To: David Steele <david(at)pgmasters(dot)net>
Cc: Robert Haas <robertmhaas(at)gmail(dot)com>, Claudio Freire <klaussfreire(at)gmail(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, Pavan Deolasee <pavan(dot)deolasee(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Block level parallel vacuum WIP
Date: 2017-03-05 07:09:14
Message-ID: CAD21AoBYQZeMgTocXCDc0bP3f7LXjbVmbw5LCK5f1OtS3_RMFg@mail.gmail.com
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On Sun, Mar 5, 2017 at 12:14 PM, David Steele <david(at)pgmasters(dot)net> wrote:
> On 3/4/17 9:08 PM, Masahiko Sawada wrote:
>> On Sat, Mar 4, 2017 at 5:47 PM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
>>> On Fri, Mar 3, 2017 at 9:50 PM, Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com> wrote:
>>>> Yes, it's taking a time to update logic and measurement but it's
>>>> coming along. Also I'm working on changing deadlock detection. Will
>>>> post new patch and measurement result.
>>>
>>> I think that we should push this patch out to v11. I think there are
>>> too many issues here to address in the limited time we have remaining
>>> this cycle, and I believe that if we try to get them all solved in the
>>> next few weeks we're likely to end up getting backed into some choices
>>> by time pressure that we may later regret bitterly. Since I created
>>> the deadlock issues that this patch is facing, I'm willing to try to
>>> help solve them, but I think it's going to require considerable and
>>> delicate surgery, and I don't think doing that under time pressure is
>>> a good idea.
>>>
>>> From a fairness point of view, a patch that's not in reviewable shape
>>> on March 1st should really be pushed out, and we're several days past
>>> that.
>>>
>>
>> Agreed. There are surely some rooms to discuss about the design yet,
>> and it will take long time. it's good to push this out to CF2017-07.
>> Thank you for the comment.
>
> I have marked this patch "Returned with Feedback." Of course you are
> welcome to submit this patch to the 2017-07 CF, or whenever you feel it
> is ready.

Thank you!

Regards,

--
Masahiko Sawada
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
NTT Open Source Software Center

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