Re: Asynchronous execution on FDW

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Heikki Linnakangas <hlinnaka(at)iki(dot)fi>
Cc: Kouhei Kaigai <kaigai(at)ak(dot)jp(dot)nec(dot)com>, Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Asynchronous execution on FDW
Date: 2015-08-10 15:01:06
Message-ID: CA+TgmoZLpjDQhV_uKz97GqKo2EGMGcGMB8+YT=0nqzVhhP8viA@mail.gmail.com
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On Mon, Aug 10, 2015 at 3:23 AM, Heikki Linnakangas <hlinnaka(at)iki(dot)fi> wrote:
> I've marked this as rejected in the commitfest, because others are
> working on a more general solution with parallel workers. That's still
> work-in-progress, and it's not certain if it's going to make it into
> 9.6, but if it does it will largely render this obsolete. We can revisit
> this patch later in the release cycle, if the parallel scan patch hasn't
> solved the same use case by then.

I think the really important issue for this patch is the one discussed here:

http://www.postgresql.org/message-id/CA+TgmoaiJK1svzw_GkFU+zsSxciJKFELqu2AOMVUPhpSFw4BsQ@mail.gmail.com

You raised an important issue there but never really expressed an
opinion on the points I raised, here or on the other thread. And
neither did anyone else except the patch author who, perhaps
unsurprisingly, thinks it's OK. I wish we could get more discussion
about that.

--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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