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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3619) ContainerMetrics unregisters during getMetrics and leads to ConcurrentModificationException
Date Fri, 02 Oct 2015 20:32:27 GMT

    [ https://issues.apache.org/jira/browse/YARN-3619?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14941718#comment-14941718
] 

Hudson commented on YARN-3619:
------------------------------

FAILURE: Integrated in Hadoop-trunk-Commit #8559 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/8559/])
YARN-3619. ContainerMetrics unregisters during getMetrics and leads to (jlowe: rev fdf02d1f26cea372bf69e071f57b8bfc09c092c4)
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/impl/MetricsSystemImpl.java
* 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
* hadoop-yarn-project/CHANGES.txt
* hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/monitor/TestContainerMetrics.java
* hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java
* hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/monitor/ContainerMetrics.java
* hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/yarn-default.xml


> ContainerMetrics unregisters during getMetrics and leads to ConcurrentModificationException
> -------------------------------------------------------------------------------------------
>
>                 Key: YARN-3619
>                 URL: https://issues.apache.org/jira/browse/YARN-3619
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: nodemanager
>    Affects Versions: 2.7.0
>            Reporter: Jason Lowe
>            Assignee: zhihai xu
>             Fix For: 2.7.2
>
>         Attachments: YARN-3619.000.patch, YARN-3619.001.patch, YARN-3619.alt.patch, YARN-3619.branch-2.7.patch,
test.patch
>
>
> ContainerMetrics is able to unregister itself during the getMetrics method, but that
method can be called by MetricsSystemImpl.sampleMetrics which is trying to iterate the sources.
 This leads to a ConcurrentModificationException log like this:
> {noformat}
> 2015-05-11 14:00:20,360 [Timer for 'NodeManager' metrics system] WARN impl.MetricsSystemImpl:
java.util.ConcurrentModificationException
> {noformat}



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