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From "Haibo Chen (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-8911) NM incorrectly account for container cpu utilization by their number of vcores
Date Thu, 18 Oct 2018 20:44:00 GMT
Haibo Chen created YARN-8911:
--------------------------------

             Summary: NM incorrectly account for container cpu utilization by their number
of vcores
                 Key: YARN-8911
                 URL: https://issues.apache.org/jira/browse/YARN-8911
             Project: Hadoop YARN
          Issue Type: Bug
          Components: nodemanager
            Reporter: Haibo Chen
            Assignee: Haibo Chen


ResourceUtilization represents the cpu utilization with a float number in [0, 1.0], i.e. the
percentage of cpu usage across the node.  However, when Containers Monitor tracks the total
aggregate resource utilization of all containers, it adds up the total number of vcores used
by all running containers.

See [the code|https://github.com/apache/hadoop/blob/beb850d8f7f1fefa7a6d9502df2b4a4eea372523/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/monitor/ContainersMonitorImpl.java#L672]



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