Yes - rebalance => consumers trying to coordinate through ZK.
Rebalances can happen when one or more of the following happen:
- a consumed topic partition appears or disappears - i.e., if a broker
comes or goes.
- a consumer instance in the group comes or goes
"goes" could also be triggered by session expirations in zookeeper -
typically caused by client-side GC or flaky connections to zookeeper.

On Mon, Jul 15, 2013 at 10:15 AM, Vaibhav Puranik <[EMAIL PROTECTED]> wrote:

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