Re: select_parallel test failure: gather sometimes losing tuples (maybe during rescans)?

From: Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: select_parallel test failure: gather sometimes losing tuples (maybe during rescans)?
Date: 2018-03-05 20:37:01
Message-ID: CAEepm=2frLdYnq=JpHNGvhAvwPr-V+5txbVnvysF3XaTGKgk2w@mail.gmail.com
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On Tue, Mar 6, 2018 at 9:17 AM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
> The optimistic approach seems a little bit less likely to slow this
> down on systems where barriers are expensive, so I committed that one.
> Thanks for debugging this; I hope this fixes it, but I guess we'll
> see.

Thanks.

For the record, the commit message (written by me) should have
acknowledged Tomas's help as reviewer and tester. Sorry about that.

--
Thomas Munro
http://www.enterprisedb.com

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