Re: [COMMITTERS] pgsql: Remove secondary checkpoint - Mailing list pgsql-committers

From Andres Freund
Subject Re: [COMMITTERS] pgsql: Remove secondary checkpoint
Date
Msg-id 20171107191415.ubl7klakaxy6eu6z@alap3.anarazel.de
Whole thread Raw
In response to Re: [COMMITTERS] pgsql: Remove secondary checkpoint  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: [COMMITTERS] pgsql: Remove secondary checkpoint  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-committers
On 2017-11-07 14:12:19 -0500, Tom Lane wrote:
> Andres Freund <andres@anarazel.de> writes:
> > On 2017-11-07 17:57:31 +0000, Simon Riggs wrote:
> >> Remove secondary checkpoint
> 
> > FWIW, I don't think this should be applied without a pg_resetxlog
> > feature allowing to manually use older checkpoints.
> 
> Uh, what?  We have never before insisted on pg_resetxlog being able
> to use WAL across a WAL format change, and there have been many of
> those.

I think you misunderstand my point - I'm saying that pg_resetxlog should
be able to force the use of older checkpoints, basically as a fallback
to cases where the previous approach might actually have worked, not
that it needs to work across format changes.

Greetings,

Andres Freund


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