Re: Comment in snapbuild.c file

From: Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>
To: Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>
Cc: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Comment in snapbuild.c file
Date: 2017-08-13 03:28:41
Message-ID: 20170813032841.i4mcgbqlok62x5md@alvherre.pgsql
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Alvaro Herrera wrote:
> Masahiko Sawada wrote:
> > Hi all,
> >
> > In snapbuild.c file, there is a comment as follows.
> >
> > * NB: Because of that xmax can be lower than xmin, because we only
> > * increase xmax when a catalog modifying transaction commits. While odd
> > * looking, it's correct and actually more efficient this way since we hit
> > * fast paths in tqual.c.
> > */
>
> I think the whole para needs to be rethought.

Pushed, thanks.

--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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