Re: CLUSTER, reform_and_rewrite_tuple(), and parallelism

From: Claudio Freire <klaussfreire(at)gmail(dot)com>
To: Peter Geoghegan <pg(at)heroku(dot)com>
Cc: Pg Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: CLUSTER, reform_and_rewrite_tuple(), and parallelism
Date: 2016-10-27 15:54:26
Message-ID: CAGTBQpYb-nGKqPngyk=NOJY0bVDiHRYyBrMOpH6Xi2zfo2=MYw@mail.gmail.com
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On Wed, Oct 26, 2016 at 9:33 PM, Peter Geoghegan <pg(at)heroku(dot)com> wrote:
> Besides, parallel CREATE INDEX alone will probably
> be quite effective at speeding up CLUSTER in practice, simply because
> that's often where most wall clock time is spent during a CLUSTER
> operation.

Creating all indexes in parallel could also help considerably, for the
case when there are multiple indexes, and seems far simpler.

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