Re: Autovacuum on partitioned table (autoanalyze)
Justin Pryzby <pryzby@telsasoft.com>
From: Justin Pryzby <pryzby@telsasoft.com>
To: Álvaro Herrera <alvherre@alvh.no-ip.org>
Cc: Andres Freund <andres@anarazel.de>, Kyotaro HORIGUCHI <horiguchi.kyotaro@lab.ntt.co.jp>, yuzuko <yuzukohosoya@gmail.com>, Tomas Vondra <tomas.vondra@enterprisedb.com>, David Steele <david@pgmasters.net>, Kyotaro Horiguchi <horikyota.ntt@gmail.com>, Daniel Gustafsson <daniel@yesql.se>, Amit Langote <amitlangote09@gmail.com>, Masahiko Sawada <masahiko.sawada@2ndquadrant.com>, Laurenz Albe <laurenz.albe@cybertec.at>, "pgsql-hackers@lists.postgresql.org" <pgsql-hackers@lists.postgresql.org>, Greg Stark <stark@mit.edu>
Date: 2021-08-16T22:28:10Z
Lists: pgsql-hackers
On Mon, Aug 16, 2021 at 05:42:48PM -0400, Álvaro Herrera wrote: > On 2021-Aug-16, Álvaro Herrera wrote: > > > Here's the reversal patch for the 14 branch. (It applies cleanly to > > master, but the unused member of PgStat_StatTabEntry needs to be > > removed and catversion bumped). > > I have pushed this to both branches. (I did not remove the item from > the release notes in the 14 branch.) | I retained the addition of relkind 'p' to tables included by | pg_stat_user_tables, because reverting that would require a catversion | bump. Right now, on v15dev, it shows 0, which is misleading. Shouldn't it be null ? analyze_count | 0 Note that having analyze_count and last_analyze would be an an independently useful change. Since parent tables aren't analyzed automatically, I have a script to periodically process them if they weren't processed recently. Right now, for partitioned tables, the best I could find is to check its partitions: | MIN(last_analyzed) FROM pg_stat_all_tables psat JOIN pg_inherits i ON psat.relid=i.inhrelid In 20200418050815.GE26953@telsasoft.com I wrote: |This patch includes partitioned tables in pg_stat_*_tables, which is great; I |complained awhile ago that they were missing [0]. It might be useful if that |part was split out into a separate 0001 patch (?). | [0] https://www.postgresql.org/message-id/20180601221428.GU5164%40telsasoft.com -- Justin
Commits
-
Keep stats up to date for partitioned tables
- e1efc5b465c8 14.0 landed
- 375aed36ad83 15.0 landed
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Revert analyze support for partitioned tables
- b3d24cc0f0aa 14.0 landed
- 6f8127b73901 15.0 landed
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Document ANALYZE storage parameters for partitioned tables
- 41badeaba8be 14.0 landed
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autovacuum: handle analyze for partitioned tables
- 0827e8af70f4 14.0 landed