Suresh Srinivas created HDFS-4893:
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             Summary: Report number of readers and writes from Datanode to 
Namenode
                 Key: HDFS-4893
                 URL: https://issues.apache.org/jira/browse/HDFS-4893
             Project: Hadoop HDFS
          Issue Type: Improvement
    Affects Versions: 2.0.0-alpha
            Reporter: Suresh Srinivas


Currently datanode reports combined number of readers and writers as 
transceiver count to the namenode in heartbeats. This jira proposes reporting 
number of readers and writers as separate fields in heartbeats.

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