Re: max_parallel_degree > 0 for 9.6 beta

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>, Noah Misch <noah(at)leadboat(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: max_parallel_degree > 0 for 9.6 beta
Date: 2016-08-16 02:16:08
Message-ID: CA+Tgmob7=NUf_RU9tM8SymFnEHgmAragPNW9RvUwxkBDncAvNg@mail.gmail.com
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On Mon, Aug 15, 2016 at 9:10 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Robert Haas <robertmhaas(at)gmail(dot)com> writes:
>> On Sat, Aug 13, 2016 at 11:56 AM, Alvaro Herrera
>> <alvherre(at)2ndquadrant(dot)com> wrote:
>>> I too prefer to keep it turned off in 9.6 and consider enabling it by
>>> default on a future release (10 is probably good). Interested users can
>>> carefully test the feature without endangering other unsuspecting users.
>>> I agree with the idea of keeping it enabled in master, so that it'll get
>>> a modicum of testing there by hackers, too.
>
>> Sounds like that is the consensus. Who's going to implement it?
>
> I believe we're talking about reverting 77cd477c4 (in 9.6 only not
> master), correct? It's a little harder than just "git revert" because
> of the subsequent max_parallel_degree -> max_parallel_workers_per_gather
> name change, but still not exactly rocket science.
>
> Since 77cd477c4 was your commit, I'd sort of expect you to do the
> honors, but if you don't want to I can.

OK, I'll do it.

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

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