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https://issues.apache.org/jira/browse/YARN-4308?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15244309#comment-15244309
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Sunil G commented on YARN-4308:
-------------------------------
I also tested this by adding some more debug logs. I am not seeing any -ve
values as I saw earlier. Looks fine for me.
{noformat}
2016-04-16 22:36:21,127 ERROR
org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerNode:
ContainersResource Utilization : CpuTrackerUsagePercent : 0.0
2016-04-16 22:36:22,129 ERROR
org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerNode:
ContainersResource Utilization : CpuTrackerUsagePercent : 0.0
2016-04-16 22:36:23,132 ERROR
org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerNode:
ContainersResource Utilization : CpuTrackerUsagePercent : 4.509
{noformat}
> 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
> Attachments: 0001-YARN-4308.patch, 0002-YARN-4308.patch
>
>
> 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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