Re: unlogged tables

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От Andres Freund
Тема Re: unlogged tables
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Msg-id 201011162330.29993.andres@anarazel.de
обсуждение исходный текст
Ответ на Re: unlogged tables  (Josh Berkus <josh@agliodbs.com>)
Ответы Re: unlogged tables  ("Kevin Grittner" <Kevin.Grittner@wicourts.gov>)
Re: unlogged tables  (Andres Freund <andres@anarazel.de>)
Re: unlogged tables  (Robert Haas <robertmhaas@gmail.com>)
Список pgsql-hackers
On Tuesday 16 November 2010 23:12:10 Josh Berkus wrote:
> On 11/16/10 2:08 PM, Peter Eisentraut wrote:
> > On tis, 2010-11-16 at 14:00 -0800, Josh Berkus wrote:
> >> It seems to me
> >> that most people using unlogged tables won't want to back them up ...
> >> especially since the share lock for pgdump will add overhead for the
> >> kinds of high-volume updates people want to do with unlogged tables.
> > 
> > Or perhaps most people will want them backed up, because them being
> > unlogged the backup is the only way to get them back in case of a crash?
> 
> Yeah, hard to tell, really.   Which default is less likely to become a
> foot-gun?
Well. Maybe both possibilities are just propable(which I think is unlikely), 
but the different impact is pretty clear.

One way your backup runs too long and too much data changes, the other way 
round you loose the data which you assumed safely backuped.

Isn't that a *really* easy decision?

Andres


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