Date: Mon, 29 Jan 2018 09:06:31 -0800
From: Andres Freund <andres@anarazel.de>
To: Tomas Vondra <tomas.vondra@2ndquadrant.com>
Cc: Tom Lane <tgl@sss.pgh.pa.us>,
	"Todd A. Cook" <tcook@blackducksoftware.com>,
	Thomas Munro <thomas.munro@enterprisedb.com>,
	PostgreSQL Bugs <pgsql-bugs@postgresql.org>
Subject: Re: BUG #14932: SELECT DISTINCT val FROM table gets stuck in an
 infinite loop
Message-ID: <20180129170631.kdr2dtu5rodvovhv@alap3.anarazel.de>
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Hi,

On 2018-01-29 14:41:49 +0100, Tomas Vondra wrote:
> Do you think repeating the performance testing is necessary? Not sure
> when do you plan to push the changes, I may not have time for the tests
> until after FOSDEM.

Hm, it surely wouldn't hurt, but your previous result does give a lot of
confidence - there's not a lot of fundamental difference leaving one
more mitigation that should never reduce hashtable "quality" aside.  So
I think going ahead with pushing and then benchmarking if possible, is
reasonable?

Greetings,

Andres Freund