Are all the consumers in the same group? If so there could be longer
rebalance latencies; but in general you should be able to have that
many consumers.

Also, to which servers are you seeing the timeouts - Zookeeper or
kafka? Also, any reason why you are lowering the zk session timeout in
your code? Can you share some of your logs?

Joel

On Thu, Jan 9, 2014 at 5:07 AM, Klaus Schaefers
<[EMAIL PROTECTED]> wrote:

 
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