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From Ted Dunning <ted.dunn...@gmail.com>
Subject Re: How large an ensemble can one build with Zookeeper?
Date Wed, 04 Mar 2009 05:33:06 GMT
zookeeper is not really what you would call a scalable system because  
all transactions that are updates go through the leader for  
serialization. Zookeeper is, instead, a high throughput HA system.  
That said, the throughput of a modest zookeeper  cluster is fairly  
prodigous so for the normal application of coordinating a large  
cluster, these limits are beyond what just about anyone needs.

For other uses, though, 50 K updates per second wouldn't cut it.

Sent from my iPhone

On Mar 3, 2009, at 17:30, Chad Harrington <charrington@datascaler.com>  

> Clearly Zookeeper can handle ensembles of a dozen or so servers.   
> How large
> an ensemble can one build with Zookeeper?  100 servers?  10,000  
> servers?
> Are there limitations that make the system unusable at large numbers  
> of
> servers?
> Thanks,
> -- 
> Chad Harrington
> DataScaler, Inc.
> charrington@datascaler.com
> 201A Ravendale Dr.
> Mountain View, CA  94043
> Phone: 650-515-3437
> Fax: 650-887-1544

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