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Re: Recovery target 'immediate'

From: Heikki Linnakangas <hlinnakangas(at)vmware(dot)com>
To: Simon Riggs <simon(at)2ndQuadrant(dot)com>
Cc: Bruce Momjian <bruce(at)momjian(dot)us>, Cédric Villemain <cedric(at)2ndquadrant(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, Magnus Hagander <magnus(at)hagander(dot)net>, Robert Haas <robertmhaas(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Subject: Re: Recovery target 'immediate'
Date: 2013-05-07 12:50:05
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-hackers
On 07.05.2013 15:38, Simon Riggs wrote:
> On 3 May 2013 14:40, Heikki Linnakangas<hlinnakangas(at)vmware(dot)com>  wrote:
>> If we want to avoid adding a new option for this, how about a magic restore
>> point called "consistent" or "immediate":
>> recovery_target_name='immediate'
>> That would stop recovery right after reaching consistency, but there
>> wouldn't be an actual restore point record in the WAL stream.
> recovery_target_name='something'
> for me. Either constent or immediate works.
> I request that the docs recommend this be used in conjunction with
> pause_at_recovery_target = on, so that the user can begin inspecting
> the database at the first available point and then roll forward from
> that point if desired. That would cover my concern that this stopping
> point is arbitrary and not intrinsically worth stopping at of itself.

Sounds good. I've added this to the TODO.

> Can I suggest that we discuss a range of related changes together? So
> we have a roadmap of agreed changes in this area. That will be more
> efficient than discussing each one individually; often each one makes
> sense only as part of the wider context.

Sure, do you have something else in mind related to this?

- Heikki

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