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From "Sunil G (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-4308) ContainersAggregated CPU resource utilization reports negative usage in first few heartbeats
Date Wed, 28 Oct 2015 16:17:27 GMT
Sunil G created YARN-4308:
-----------------------------

             Summary: ContainersAggregated CPU resource utilization reports negative usage
in first few heartbeats
                 Key: YARN-4308
                 URL: https://issues.apache.org/jira/browse/YARN-4308
             Project: Hadoop YARN
          Issue Type: Bug
          Components: nodemanager
    Affects Versions: 2.7.1
            Reporter: Sunil G
            Assignee: Sunil G


NodeManager reports ContainerAggregated CPU resource utilization as -ve value in first few
heartbeats cycles. I added a new debug print and received below values from heartbeats.
{noformat}
INFO org.apache.hadoop.yarn.server.nodemanager.containermanager.monitor.ContainersMonitorImpl:
ContainersResource Utilization : CpuTrackerUsagePercent : -1.0 
INFO org.apache.hadoop.yarn.server.nodemanager.containermanager.monitor.ContainersMonitorImpl:ContainersResource
Utilization :  CpuTrackerUsagePercent : 198.94598
{noformat}

Its better we send 0 as CPU usage rather than sending a negative values in heartbeats eventhough
its happening in only first few heartbeats.



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