From: Tom Lane <tgl@sss.pgh.pa.us>
To: Tomas Vondra <tomas.vondra@2ndquadrant.com>
cc: James Coleman <jtc331@gmail.com>,
        Alvaro Herrera <alvherre@2ndquadrant.com>,
        Michael Paquier <michael@paquier.xyz>,
        Rafia Sabih <rafia.pghackers@gmail.com>, Peter Geoghegan <pg@bowt.ie>,
        Simon Riggs <simon@2ndquadrant.com>,
        Shaun Thomas <shaun.thomas@2ndquadrant.com>,
        Dmitry Dolgov <9erthalion6@gmail.com>,
        Alexander Korotkov <a.korotkov@postgrespro.ru>,
        PostgreSQL Developers <pgsql-hackers@lists.postgresql.org>,
        Andreas Karlsson <andreas@proxel.se>
Subject: Re: [PATCH] Incremental sort (was: PoC: Partial sort)
In-reply-to: <20200406201145.ig56cdzrkt4u5mou@development>
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Comments: In-reply-to Tomas Vondra <tomas.vondra@2ndquadrant.com>
	message dated "Mon, 06 Apr 2020 22:11:45 +0200"
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Date: Mon, 06 Apr 2020 16:14:38 -0400
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Tomas Vondra <tomas.vondra@2ndquadrant.com> writes:
> Hmmm, I see the buildfarm is not happy about it - a couple of animals
> failed, but some succeeded. The failure seems like a simple difference
> in explain output, but it's not clear why would it happen (and I've
> ran the tests many times but never seen this failure).

Did you ever use force_parallel_mode = regress?

			regards, tom lane