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 <charring...@datascaler.com> wrote:

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


Chad Harrington
DataScaler, Inc.
201A Ravendale Dr.
Mountain View, CA  94043
Phone: 650-515-3437
Fax: 650-887-1544

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