| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
| Cc: | Andres Freund <andres(at)2ndQuadrant(dot)com>, KONDO Mitsumasa <kondo(dot)mitsumasa(at)lab(dot)ntt(dot)co(dot)jp>, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>, Fabrízio Mello <fabriziomello(at)gmail(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Pgsql Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Time-Delayed Standbys |
| Date: | 2013-12-12 14:52:39 |
| Message-ID: | 3398.1386859959@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Simon Riggs <simon(at)2ndQuadrant(dot)com> writes:
> On 12 December 2013 11:05, Andres Freund <andres(at)2ndquadrant(dot)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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