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From: Markus Schiltknecht <[email protected]>
Cc: Bruce Momjian <[email protected]>
Cc: Peter Eisentraut <[email protected]>
Cc: [email protected]
Subject: Re: "Clustering"
Date: Tue, 21 Nov 2006 16:50:06 +0100
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
	<[email protected]>

Hi,

I wrote:
> That reminds me of the requirement of having Multi Master Replication in 
> place to do Parallel Query Execution. Sync Multi Master Replication 
> being better, while Async Multi Master Replication obviously leads to 
> inconsistent responses, when queried in parallel. That may be acceptable 
> in certain situations.

Oops, during rereading "Clustering For Parallel Query Execution", I've 
noticed that you mention Data Partitioning as one possible way to do 
Parallel Query Execution. Thus Multi Master Replication obviously is not 
a requirement, but just another way to allow for Parallel Query 
Execution. Mentioning that as well would probably be good.

IMHO, the advice to use multiple, independent databases to do parallel 
query execution sounds a little meager. Of course it's also parallel 
query execution, but it's not what most people suspect to find under 
that section, I would guess.

Regards

Markus

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