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Re: Clustering features for upcoming developer meeting -- please claim yours!

From: Hannu Krosing <hannu(at)2ndquadrant(dot)com>
To: Marko Kreen <markokr(at)gmail(dot)com>
Cc: Jan Wieck <JanWieck(at)yahoo(dot)com>, Josh Berkus <josh(at)agliodbs(dot)com>, pgsql-cluster-hackers(at)postgresql(dot)org
Subject: Re: Clustering features for upcoming developer meeting -- please claim yours!
Date: 2010-05-10 22:48:13
Message-ID: 1273531693.15431.66.camel@hvost (view raw or flat)
Thread:
Lists: pgsql-cluster-hackers
On Tue, 2010-05-11 at 01:08 +0300, Marko Kreen wrote:
> On 5/11/10, Jan Wieck <JanWieck(at)yahoo(dot)com> wrote:
> >  This means that a generalized data queue needs to have hooks, so that DDL
> > triggers can inject their payload into it.
> 
> If you mean "hooks" as pgq.insert_event() function, then yes..
> I hope you are designing a generally usable queue with the GDQ.

The only way to have a generally usable queue different from pgQ is
having something that copies all events off the server (to either final
subscriber or some forwarding/processing station) and leaves the
commit/abort resolution to "the other server".

event id should still provide an usable order for applying these events.


-- 
Hannu Krosing   http://www.2ndQuadrant.com
PostgreSQL Scalability and Availability 
   Services, Consulting and Training



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