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

From: Michael Paquier <michael(at)paquier(dot)xyz>
To: "Tsunakawa, Takayuki" <tsunakawa(dot)takay(at)jp(dot)fujitsu(dot)com>
Cc: 'Tom Lane' <tgl(at)sss(dot)pgh(dot)pa(dot)us>, 'Andres Freund' <andres(at)anarazel(dot)de>, Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>, Julien Rouhaud <rjuju123(at)gmail(dot)com>, David Steele <david(at)pgmasters(dot)net>, "Bossart, Nathan" <bossartn(at)amazon(dot)com>, Andrew Dunstan <andrew(dot)dunstan(at)2ndquadrant(dot)com>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at>, "Jamison, Kirk" <k(dot)jamison(at)jp(dot)fujitsu(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: reloption to prevent VACUUM from truncating empty pages at the end of relation
Date: 2019-04-08 04:43:38
Message-ID: 20190408044338.GB2712@paquier.xyz
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On Mon, Apr 08, 2019 at 03:56:52AM +0000, Tsunakawa, Takayuki wrote:
> Consensus on the name seems to use truncate rather than shrink (a
> few poople kindly said they like shrink, and I'm OK with either
> name.) And there's no dispute on the behavior. Do you see any
> other point?

I personally much prefer "truncate" than "shrink", which was my
initial opinion in upthread as well.

Please note that the feature freeze will be effective in just a bit
more than 7 hours, as of the 8th of April 0AM on the AoE timezone
(Anywhere on Earth).
--
Michael

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