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From Samuel Rash <sl.r...@fb.com>
Subject performance of watches
Date Fri, 17 Dec 2010 03:42:02 GMT

I am looking to run about 40 zookeeper clients with the following watch

1. Up to 25,000 paths that every host has a watch on (each path has one
child and the watch is one for that child, an ephemeral node, being
2. An individual host "owns" 625 of these paths in this example; one going
down will fire 625 watches to the other 39 hosts

Is there any limit on the rate at which these watches can be sent off?
What's the right size cluster? (3? 5?)  Does it need to be dedicated hw?


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