From: Tom Lane <tgl@sss.pgh.pa.us>
To: Robert Haas <robertmhaas@gmail.com>
cc: "David G. Johnston" <david.g.johnston@gmail.com>,
        Josh berkus <josh@agliodbs.com>,
 Amit Kapila <amit.kapila16@gmail.com>,
        Peter Geoghegan <pg@heroku.com>, Noah Misch <noah@leadboat.com>,
        David Rowley <david.rowley@2ndquadrant.com>,
        Alvaro Herrera <alvherre@2ndquadrant.com>,
        Magnus Hagander <magnus@hagander.net>,
        Bruce Momjian <bruce@momjian.us>,
        PostgreSQL-development <pgsql-hackers@postgresql.org>
Subject: Re: Rename max_parallel_degree?
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Comments: In-reply-to Robert Haas <robertmhaas@gmail.com>
	message dated "Fri, 03 Jun 2016 08:34:47 -0400"
Date: Fri, 03 Jun 2016 09:39:43 -0400
Message-ID: <11330.1464961183@sss.pgh.pa.us>
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Robert Haas <robertmhaas@gmail.com> writes:
> I think we should just go with max_parallel_workers for a limit on
> total parallel workers within max_work_processes, and
> max_parallel_workers_per_gather for a per-Gather limit.  It's slightly
> annoying that we may end up renaming the latter GUC, but not as
> annoying as spending another three weeks debating this and missing
> beta2.

+1.  I'm not as convinced as you are that we'll replace the GUC later,
but in any case this is an accurate description of the current
semantics.  And I'm really *not* in favor of fudging the name with
the intent of changing the GUC's semantics later --- that would fail
all sorts of compatibility expectations.

			regards, tom lane


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