It's all handled by the zookeeper library, check out their
documentation: http://zookeeper.apache.org/doc/trunk/

J-D

On Fri, Jul 27, 2012 at 11:53 AM, Yongcheng Li <yongcheng...@sas.com> wrote:
> I am testing my multi-master HBase configuration and want to know how HBase 
> master keep its Zookeeper session alive. Does the master (version .94 or 
> later) send heartbeat message to ZooKeeper periodically? If yes, how often 
> does it send the heartbeat message? If not, how does it present the session 
> from expiring?
>
> Thanks!
>
> Yongcheng Li

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