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From David Rosenstrauch <dar...@darose.net>
Subject Ok to share ZK nodes with Hadoop nodes?
Date Mon, 08 Mar 2010 18:58:53 GMT
I'm contemplating an upcoming zookeeper rollout and was wondering what 
the zookeeper brain trust here thought about a network deployment question:

Is it generally considered bad practice to just deploy zookeeper on our 
existing hdfs/MR nodes?  Or is it better to run zookeeper instances on 
their own dedicated nodes?

On the one hand, we're not going to be making heavy-duty use of 
zookeeper, so it might be sufficient for zookeeper nodes to share box 
resources with HDFS & MR.  On the other hand, though, I don't want 
zookeeper to become unavailable if the nodes are running a resource 
intensive job that's hogging CPU or network.

What's generally considered best practice for Zookeeper?



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