Region server going down as a result of expiration by ZK
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                 Key: HBASE-1601
                 URL: https://issues.apache.org/jira/browse/HBASE-1601
             Project: Hadoop HBase
          Issue Type: Bug
    Affects Versions: 0.20.0
            Reporter: Amandeep Khurana
             Fix For: 0.20.0


During an MR job, ZK expires one of the nodes. This results in losing contact 
with a region server and eventually the map task timing out and the job failing.

Attaching the following logs:
1. HBase master logs
2. Logs from the web UI
3. Logs from the particular RS that went down.
4. Logs from the particular node that ZK expired.

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