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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Robert Haas <robertmhaas@gmail.com>
Cc: David G. Johnston <david.g.johnston@gmail.com>
Cc: Josh berkus <josh@agliodbs.com>
Cc: Amit Kapila <amit.kapila16@gmail.com>
Cc: Peter Geoghegan <pg@heroku.com>
Cc: Noah Misch <noah@leadboat.com>
Cc: David Rowley <david.rowley@2ndquadrant.com>
Cc: Alvaro Herrera <alvherre@2ndquadrant.com>
Cc: Magnus Hagander <magnus@hagander.net>
Cc: Bruce Momjian <bruce@momjian.us>
Cc: PostgreSQL-development <pgsql-hackers@postgresql.org>
Subject: Re: Rename max_parallel_degree?
Date: Fri, 03 Jun 2016 09:39:43 -0400
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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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