Re: Re: [COMMITTERS] pgsql: Basic Recovery Control functions for use in Hot Standby. Pause,

From: Fujii Masao <masao(dot)fujii(at)gmail(dot)com>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: Simon Riggs <simon(at)2ndquadrant(dot)com>, Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Magnus Hagander <magnus(at)hagander(dot)net>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Re: [COMMITTERS] pgsql: Basic Recovery Control functions for use in Hot Standby. Pause,
Date: 2011-03-24 11:02:49
Message-ID: AANLkTikfb_3VibHjPs6xq1ZpakLbHxx1qHjTOqXO0wkC@mail.gmail.com
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On Thu, Mar 24, 2011 at 12:19 AM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
> On Wed, Mar 23, 2011 at 9:38 AM, Simon Riggs <simon(at)2ndquadrant(dot)com> wrote:
>>> Actually, my previous email was all nonsense, wasn't it?  If we don't
>>> reach the consistency point, we can't enter normal running anyway -
>>> shut down is the only option no matter what.
>>
>> Presumably you mean that the way its currently coded is the way it should stay?
>
> Uh, maybe, but it's not obvious to me that it actually is coded that
> way.  I don't see any safeguard that prevents recovery from pausing
> before consistency is released.  Is there one?  Where?

Oh, sorry for my poor explanation.

My explanation is true if we'll just change the code so that it ignores
pause_at_recovery_target until recovery reaches the consistency point.
Simon changed the code in that way yesterday.

Regards,

--
Fujii Masao
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
NTT Open Source Software Center

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