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Re: xlog filename formatting functions in recovery

From: Daniel Farina <daniel(at)heroku(dot)com>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: Magnus Hagander <magnus(at)hagander(dot)net>, Amit Kapila <amit(dot)kapila(at)huawei(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: xlog filename formatting functions in recovery
Date: 2012-07-03 16:37:08
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Lists: pgsql-hackers
On Tue, Jul 3, 2012 at 5:30 AM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
> On Tue, Jul 3, 2012 at 8:16 AM, Magnus Hagander <magnus(at)hagander(dot)net> wrote:
>> On Tuesday, July 3, 2012, Robert Haas wrote:
>>> On Tue, Jul 3, 2012 at 6:43 AM, Amit Kapila <amit(dot)kapila(at)huawei(dot)com>
>>> wrote:
>>> >>(added to commitfest:
>>> >>
>>> > It seems you have added it in current commit fest.
>>> > Shouldn't it be added for next CF.
>>> Yep.  The current CF has been closed to new submissions for two and a
>>> half weeks.
>> Might this be something to consder for 9.2, though? It could be considered a
>> bugfix.
>>> On the substance of the patch, I believe the reason why this is
>>> currently disallowed is because the TLI is implicitly taken from the
>>> running system, and on the standby that might be the wrong value.
>>> I might be misremembering.
>> That is, however, assuming that this part is not true. I don't recall for
>> sure, but I have a feeling it might be correct. In which case a much bigger
>> patch is needed, and definitely not something for 9.2...
> Even if we were to conclude that the argument about TLIs is not valid,
> I'd be very reluctant to slip something like this into 9.2, because we
> have no time left to recant if it later turns out that there's some
> other reason why it's not a good idea.  Removing error checks is one
> of those things that you want to try to get done early in the release
> cycle, because the consequences are sometimes difficult to foresee,
> and you may not find out why it was a bad idea until users start
> complaining.

Ah. The placement in that particular commitfest was an oversight. I'll move it.


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