Re: Regarding Checkpoint Redo Record

From: Simon Riggs <simon(at)2ndQuadrant(dot)com>
To: Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>
Cc: Amit Kapila <amit(dot)kapila(at)huawei(dot)com>, PG Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Regarding Checkpoint Redo Record
Date: 2012-01-04 16:02:03
Message-ID: CA+U5nMLcxEhdAU_EJ1VuyesZM-zaTiqB35u6JXSVRT_k2hhA_A@mail.gmail.com
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-hackers

On Wed, Jan 4, 2012 at 3:56 PM, Heikki Linnakangas
<heikki(dot)linnakangas(at)enterprisedb(dot)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

In response to

Responses

Browse pgsql-hackers by date

  From Date Subject
Next Message Tom Lane 2012-01-04 16:15:51 Re: PL/Perl Does not Like vstrings
Previous Message Heikki Linnakangas 2012-01-04 15:56:55 Re: Regarding Checkpoint Redo Record