Re: pgsql: Ensure that XLOG_HEAP2_VISIBLE always targets an initialized pag

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: Stefan Kaltenbrunner <stefan(at)kaltenbrunner(dot)cc>
Cc: Andres Freund <andres(at)2ndquadrant(dot)com>, Robert Haas <rhaas(at)postgresql(dot)org>, pgsql-committers(at)postgresql(dot)org
Subject: Re: pgsql: Ensure that XLOG_HEAP2_VISIBLE always targets an initialized pag
Date: 2014-03-07 19:04:23
Message-ID: 20140307190423.GB16324@momjian.us
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On Fri, Nov 22, 2013 at 08:04:07PM +0100, Stefan Kaltenbrunner wrote:
> On 11/18/2013 10:40 PM, Andres Freund wrote:
> > On 2013-11-18 16:33:25 -0500, Bruce Momjian wrote:
> >> On Sun, Nov 10, 2013 at 11:51:06PM +0100, Andres Freund wrote:
> >>> Hi,
> >>>
> >>> On 2013-06-06 14:22:12 +0000, Robert Haas wrote:
> >>>> Ensure that XLOG_HEAP2_VISIBLE always targets an initialized page.
> >>>
> >>> This didn't make it to the release notes for 9.2.5. Since there have
> >>> been several people asking for it since, can we maybe add it
> >>> retroactively?
> >>
> >> OK, what text would I use? This?
> >>
> >> * Prevent unitialized heap pages from causing standby replay
> >> failures
> >
> > Maybe:
> >
> > * Prevent errors in WAL replay due to references to unitilizated empty
> > pages in vacuum.
>
> s/unitilizated/uninitialized I guess - also not sure the "in vacuum"
> makes the actual issue very clear.

Applied and backpatched through 9.2. Thanks.

--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com

+ Everyone has their own god. +

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