Horton

RE: reloption to prevent VACUUM from truncating empty pages at the end of relation

Tsunakawa, Takayuki <tsunakawa.takay@jp.fujitsu.com>

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From: "Tsunakawa, Takayuki" <tsunakawa.takay@jp.fujitsu.com>
To: 'Michael Paquier' <michael@paquier.xyz>, Masahiko Sawada <sawada.mshk@gmail.com>
Cc: Julien Rouhaud <rjuju123@gmail.com>, Laurenz Albe <laurenz.albe@cybertec.at>, "Jamison, Kirk" <k.jamison@jp.fujitsu.com>, Alvaro Herrera <alvherre@2ndquadrant.com>, Amit Kapila <amit.kapila16@gmail.com>, Tom Lane <tgl@sss.pgh.pa.us>, Fujii Masao <masao.fujii@gmail.com>, pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2019-02-25T10:01:08Z
Lists: pgsql-hackers

Commits

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  1. Add TRUNCATE parameter to VACUUM.

  2. Add vacuum_truncate reloption.

  3. Allow VACUUM to be run with index cleanup disabled.

From: Michael Paquier [mailto:michael@paquier.xyz]
On Mon, Feb 25, 2019 at 03:59:21PM +0900, Masahiko Sawada wrote:
> > Also, I think that this test may fail in case where concurrent
> > transactions are running. So maybe should not run it in parallel to
> > other tests.
> 
> That's why autovacuum is disabled in this specific test, no?  A comment
> may be a good idea.

Exactly.  The table is disabled for autovacuum to avoid being influenced by autovacuum.


Regards
Takayuki Tsunakawa