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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Simon Riggs <simon@2ndQuadrant.com>
Cc: Andres Freund <andres@2ndQuadrant.com>
Cc: KONDO Mitsumasa <kondo.mitsumasa@lab.ntt.co.jp>
Cc: Pavel Stehule <pavel.stehule@gmail.com>
Cc: Fabrízio Mello <fabriziomello@gmail.com>
Cc: Robert Haas <robertmhaas@gmail.com>
Cc: Pgsql Hackers <pgsql-hackers@postgresql.org>
Subject: Re: Time-Delayed Standbys
Date: Thu, 12 Dec 2013 09:52:39 -0500
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Simon Riggs <simon@2ndQuadrant.com> writes:
> On 12 December 2013 11:05, Andres Freund <andres@2ndquadrant.com> wrote:
>>> My suggestion would be to add the TZ to the checkpoint record. This
>>> way all users of WAL can see the TZ of the master and act accordingly.
>>> I'll do a separate patch for that.

>> Intuitively I'd say that might be useful - but I am not reall sure what
>> for. And we don't exactly have a great interface for looking at a
>> checkpoint's data. Maybe add it to the control file instead?

> That's actually what I had in mind, I just phrased it badly in mid-thought.

I don't think you realize what a can of worms that would be.  There's
no compact representation of "a timezone", unless you are only proposing
to store the UTC offset; and frankly I'm not particularly seeing the point
of that.

			regards, tom lane


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