Horton

Re: Teaching users how they can get the most out of HOT in Postgres 14

Peter Geoghegan <pg@bowt.ie>

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From: Peter Geoghegan <pg@bowt.ie>
To: Masahiko Sawada <sawada.mshk@gmail.com>
Cc: Michael Paquier <michael@paquier.xyz>, Justin Pryzby <pryzby@telsasoft.com>, Andres Freund <andres@anarazel.de>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2021-06-11T22:28:01Z
Lists: pgsql-hackers 
On Sun, May 30, 2021 at 6:30 PM Masahiko Sawada <sawada.mshk@gmail.com> wrote:
> > Another concern with this approach is what it
> > means for the VACUUM command itself. I haven't added an 'auto'
> > spelling that is accepted by the VACUUM command in this POC version.
> > But do I need to at all? Can that just be implied by not having any
> > INDEX_CLEANUP option?
>
> It seems to me that it's better to have INDEX_CLEANUP option of VACUUM
> command support AUTO for consistency. Do you have any concerns about
> supporting it?

I suppose we should have it. But now we have to teach vacuumdb about
this new boolean-like enum too. It's a lot more new code than I would
have preferred, but I suppose that it makes sense.


-- 
Peter Geoghegan

Commits

  1. Support disabling index bypassing by VACUUM.

  2. Teach VACUUM to bypass unnecessary index vacuuming.