Re: Latest version of Hot Standby patch

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От Simon Riggs
Тема Re: Latest version of Hot Standby patch
Дата
Msg-id 1231920737.28919.82.camel@ebony.2ndQuadrant
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Ответ на Re: Latest version of Hot Standby patch  (Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>)
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On Wed, 2009-01-14 at 08:27 +0200, Heikki Linnakangas wrote:
> Thanks for picking this up, despite my report was so vague.
> 
> Simon Riggs wrote:
> > Best way seems to be to do (almost) the same thing as ExtendSubtrans()
> > during recovery, so we zero out pages at the point that recovering
> > transactions get written to pg_subtrans.
> 
> Yep.
> 
> Do we have the same bug with ExtendCLOG?

No, the clog issues WAL records for that. 8 times less than subtrans
would if we allowed it to, so its not as bad performance wise either.

-- Simon Riggs           www.2ndQuadrant.comPostgreSQL Training, Services and Support



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