Siddharth Wagle created AMBARI-19858:
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             Summary: Add "live_hosts" metric in AMS for apps
                 Key: AMBARI-19858
                 URL: https://issues.apache.org/jira/browse/AMBARI-19858
             Project: Ambari
          Issue Type: Task
          Components: ambari-metrics
    Affects Versions: 2.5.0
            Reporter: Siddharth Wagle
            Assignee: Siddharth Wagle
             Fix For: 2.5.0


{quote}
live_hosts                                => # count of total hosts reporting 
metrics
live_hosts & appId = <appId> => # count of hosts hosting this appId
{quote}

Where appId = { namenode, datanode, hbase ... etc }





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