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Re: Regarding Checkpoint Redo Record - Mailing list pgsql-hackers

From Simon Riggs
Subject Re: Regarding Checkpoint Redo Record
Date
Msg-id CA+U5nMLcxEhdAU_EJ1VuyesZM-zaTiqB35u6JXSVRT_k2hhA_A@mail.gmail.com
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In response to Re: Regarding Checkpoint Redo Record  (Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>)
Responses Re: Regarding Checkpoint Redo Record  (Robert Haas <robertmhaas@gmail.com>)
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On Wed, Jan 4, 2012 at 3:56 PM, Heikki Linnakangas
<heikki.linnakangas@enterprisedb.com> wrote:
> On 04.01.2012 08:42, Amit Kapila wrote:
>>
>> Why PostgreSQL needs to write WAL record for Checkpoint when it maintains
>> same information in pg_control file?
>
>
> I guess it wouldn't be strictly necessary...

Apart from replicated standbys, which need that info for running restartpoints.

--
 Simon Riggs                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services

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