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https://issues.apache.org/jira/browse/YARN-3122?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14348755#comment-14348755
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Ram Venkatesh commented on YARN-3122:
-------------------------------------
Hi [~adhoot], thank you for working on this.
This introduces a breaking change in ResourceCalculatorProcessTree
{code}
+ /**
+ * Get the CPU usage by all the processes in the process-tree based on
+ * average between samples as a ratio of overall CPU cycles similar to top.
+ * Thus, if 2 out of 4 cores are used this should return 200.0.
+ *
+ * @return percentage CPU usage since the process-tree was created
+ * return {@link CpuTimeTracker#UNAVAILABLE} if it cannot be
calculated
+ */
+ public abstract float getCpuUsagePercent();
{code}
Can it be changed to virtual and return UNAVAILABLE?
Thanks!
Ram
> Metrics for container's actual CPU usage
> ----------------------------------------
>
> Key: YARN-3122
> URL: https://issues.apache.org/jira/browse/YARN-3122
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: nodemanager
> Affects Versions: 2.6.0
> Reporter: Anubhav Dhoot
> Assignee: Anubhav Dhoot
> Fix For: 2.7.0
>
> Attachments: YARN-3122.001.patch, YARN-3122.002.patch,
> YARN-3122.003.patch, YARN-3122.004.patch, YARN-3122.005.patch,
> YARN-3122.006.patch, YARN-3122.007.patch, YARN-3122.prelim.patch,
> YARN-3122.prelim.patch
>
>
> It would be nice to capture resource usage per container, for a variety of
> reasons. This JIRA is to track CPU usage.
> YARN-2965 tracks the resource usage on the node, and the two implementations
> should reuse code as much as possible.
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