Re: pgsql: Fix building of large (bigger than shared_buffers) hash indexes.

From: Peter Geoghegan <pg(at)heroku(dot)com>
To: Bruce Momjian <bruce(at)momjian(dot)us>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-committers <pgsql-committers(at)postgresql(dot)org>
Subject: Re: pgsql: Fix building of large (bigger than shared_buffers) hash indexes.
Date: 2016-06-27 21:30:53
Message-ID: CAM3SWZR9ei4nHxutYCvT6x4BqZvrhDaNAvxAzJYodu6-C3fuUA@mail.gmail.com
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On Mon, Jun 27, 2016 at 2:27 PM, Bruce Momjian <bruce(at)momjian(dot)us> wrote:
> Do we have any way of helping people find out if they need to recreate
> their hash indexes?

No, but I don't think that it's especially needed. It ought to be
completely obvious when the problem arises, because the resulting
index is total garbage.

This tells us a lot about how many people use hash indexes in
production, of course. 9.5 has been out for months.

--
Peter Geoghegan

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