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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Simon Riggs <simon@2ndQuadrant.com>
Cc: List pgsql-patches <pgsql-patches@postgresql.org>
Cc: pgsql-hackers <pgsql-hackers@postgresql.org>
Subject: Re: [PATCHES] Infrastructure changes for recovery
Date: Thu, 18 Sep 2008 10:09:43 -0400
Message-ID: <18549.1221746983@sss.pgh.pa.us> (raw)
In-Reply-To: <1221745847.3913.2408.camel@ebony.2ndQuadrant>
References: <1218109459.4549.423.camel@ebony.2ndQuadrant>
	<1220213074.4371.173.camel@ebony.2ndQuadrant>
	<1905.1220895241@sss.pgh.pa.us>
	<1221080797.3913.768.camel@ebony.2ndQuadrant>
	<15776.1221594318@sss.pgh.pa.us>
	<1221725145.3913.2315.camel@ebony.2ndQuadrant>
	<16992.1221743196@sss.pgh.pa.us>
	<1221745847.3913.2408.camel@ebony.2ndQuadrant>

Simon Riggs <simon@2ndQuadrant.com> writes:
> On Thu, 2008-09-18 at 09:06 -0400, Tom Lane wrote:
>> Do we really need a checkpoint there at all?

> "Timelines only change at shutdown checkpoints".

Hmm.  I *think* that that is just a debugging crosscheck rather than a
critical property.  But yeah, it would take some close investigation,
which maybe isn't warranted if you have a less-invasive solution.

			regards, tom lane



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