From: Alvaro Herrera <alvherre@2ndquadrant.com>
To: Andres Freund <andres@anarazel.de>
Cc: Robert Haas <robertmhaas@gmail.com>
Cc: Simon Riggs <simon@2ndquadrant.com>
Cc: Pg Hackers <pgsql-hackers@lists.postgresql.org>
Cc: David Fetter <david@fetter.org>
Cc: Rahila Syed <rahila.syed@2ndquadrant.com>
Cc: Pavan Deolasee <pavan.deolasee@gmail.com>
Cc: Amit Langote <Langote_Amit_f8@lab.ntt.co.jp>
Subject: Re: monitoring CREATE INDEX [CONCURRENTLY]
Date: Fri, 29 Mar 2019 12:16:37 -0300
Message-ID: <20190329151637.GA28886@alvherre.pgsql> (raw)
In-Reply-To: <20190329150828.s2bu4zckuxnceo6u@alap3.anarazel.de>
On 2019-Mar-29, Andres Freund wrote:
> Hi,
>
> On 2019-03-29 12:02:18 -0300, Alvaro Herrera wrote:
> > I just noticed that the CLUSTER calls index_build, which my patch
> > modifies to include additional progress metrics; this means that during
> > the index build phase, the metrics set by CLUSTER will be trashed by the
> > ones my patch introduces.
>
> Yea, it really seems that the index build infrastructure needs to
> support cooperating with the caller's progress reporting. For CLUSTER,
> REINDEX, ALTER TABLE rewrites etc, they all would likely want to have
> insight into the index build while also having their own progress.
So, CLUSTER and ALTER TABLE rewrites only do non-concurrent index
builds; and REINDEX can reuse pretty much the same wait-for metrics
columns as CIC. So I think it's okay if I move only the metrics that
conflict for index_build.
--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-hackers@postgresql.org
Cc: alvherre@2ndquadrant.com, andres@anarazel.de, robertmhaas@gmail.com, simon@2ndquadrant.com, pgsql-hackers@lists.postgresql.org, david@fetter.org, rahila.syed@2ndquadrant.com, pavan.deolasee@gmail.com, Langote_Amit_f8@lab.ntt.co.jp
Subject: Re: monitoring CREATE INDEX [CONCURRENTLY]
In-Reply-To: <20190329151637.GA28886@alvherre.pgsql>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox