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CC: byambajargal <byambaa.0111@gmail.com>, "cdh-user@cloudera.org"
	<cdh-user@cloudera.org>
Date: Wed, 11 May 2011 11:18:25 -0400
Subject: RE: What is the recommended  number of zookeeper server on 11 nodes
 cluster
Thread-Topic: What is the recommended  number of zookeeper server on 11
 nodes cluster
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See the performance section of the HBase book.

http://hbase.apache.org/book.html#performance


-----Original Message-----
From: Ferdy Galema [mailto:ferdy.galema@kalooga.com]=20
Sent: Wednesday, May 11, 2011 10:25 AM
To: user@hbase.apache.org
Cc: byambajargal; cdh-user@cloudera.org
Subject: Re: What is the recommended number of zookeeper server on 11 nodes=
 cluster

A rowcounter is a scan job, so you should use hbase.client.scanner.caching =
for better scan performance. (Depending on your value sizes, set to 1000 or=
 something like that).

For us, 1 zookeeper is able to manage our 15node cluster perfectly fine.

On 05/11/2011 02:40 PM, byambajargal wrote:
> Hello everybody
>
> I have run  a cluster with 11 nodes hbase CDH3u0 and i have 2=20
> zookeeper server in my cluster It seems very slowly when i run the=20
> rowcounter example my question is what is the recommended number of=20
> zookeeper server should i run for 11 nodes cluster
>
> cheers
>
>
> Byambajargal