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

From: Fujii Masao <masao(dot)fujii(at)gmail(dot)com>
To: Julien Rouhaud <rjuju123(at)gmail(dot)com>
Cc: Takayuki Tsunakawa <tsunakawa(dot)takay(at)jp(dot)fujitsu(dot)com>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Robert Haas <robertmhaas(at)gmail(dot)com>, Masahiko Sawada <sawada(dot)mshk(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>, Michael Paquier <michael(at)paquier(dot)xyz>, 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 08:15:17
Message-ID: CAHGQGwEjKr_Lj1nBgBJGBqSY4vFP9ML4ippGrbtrqmX+X13FYA@mail.gmail.com
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On Mon, Apr 8, 2019 at 3:58 PM Julien Rouhaud <rjuju123(at)gmail(dot)com> wrote:
>
> On Mon, Apr 8, 2019 at 8:01 AM Fujii Masao <masao(dot)fujii(at)gmail(dot)com> wrote:
> >
> > 2019年4月8日(月) 14:22 Tsunakawa, Takayuki <tsunakawa(dot)takay(at)jp(dot)fujitsu(dot)com>:
> >>
> >> From: Alvaro Herrera [mailto:alvherre(at)2ndquadrant(dot)com]
> >> > "vacuum_truncate" gets my vote too.
> >>
> >> +1
> >
> >
> > +1
> > ISTM that we have small consensus to
> > use "vacuum_truncate".
>
> I'm also fine with this name, and I also saw reports that this option
> is already needed in some production workload, as Andres explained.

OK, so I pushed the "vacuum_truncate" version of the patch.
But it has not been actually pushed into the community's git
repository yet.That's maybe because it's been a while since
my last commit and my commit bit is temporarily limited?
Anyway the patch has been pushed before April 8th 0:00 in AoE.

Regards,

--
Fujii Masao

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