Zookeeper is deployed as an ensemble of quorum peers in order to be highly 
available. Ensembles should be odd so one of a set of conflicting votes (should 
they occur) is always a majority. Typical deployments are of 3, 5, and 7 
dedicated servers. 

   - Andy




________________________________
From: "[email protected]" <[email protected]>
To: [email protected]
Sent: Tuesday, August 25, 2009 4:26:17 AM
Subject: Re: HBase-0.20.0 multi read

Hi,

By increasing two zookeeper servers, I've solved my multi read problem.
Thank you very much.

By the way, does anyone where to fine the machine spec or suggestion of
production deployment?
I want to know the percentage of each component will be better.
Maybe like zookeeper server 50% of region servers
           region server    10% of hadoop data nodes
Thank you

ps. sorry I don't understand -> a dedicated 2N+1 Zookeeper ensemble (N ~=
1...3)


      

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