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https://issues.apache.org/jira/browse/YARN-9830?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16949904#comment-16949904
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Bibin Chundatt commented on YARN-9830:
--------------------------------------

[~sunil.gov...@gmail.com] Could you take a look



> Improve ContainerAllocationExpirer it blocks scheduling
> -------------------------------------------------------
>
>                 Key: YARN-9830
>                 URL: https://issues.apache.org/jira/browse/YARN-9830
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Bibin Chundatt
>            Assignee: Bibin Chundatt
>            Priority: Critical
>              Labels: perfomance
>         Attachments: YARN-9830.001.patch
>
>
> {quote}
>    java.lang.Thread.State: BLOCKED (on object monitor)
>         at 
> org.apache.hadoop.yarn.util.AbstractLivelinessMonitor.register(AbstractLivelinessMonitor.java:106)
>         - waiting to lock <0x00007fa348749550> (a 
> org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.ContainerAllocationExpirer)
>         at 
> org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.RMContainerImpl$AcquiredTransition.transition(RMContainerImpl.java:601)
>         at 
> org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.RMContainerImpl$AcquiredTransition.transition(RMContainerImpl.java:592)
>         at 
> org.apache.hadoop.yarn.state.StateMachineFactory$SingleInternalArc.doTransition(StateMachineFactory.java:362)
>         at 
> org.apache.hadoop.yarn.state.StateMachineFactory.doTransition(StateMachineFactory.java:302)
>         at 
> org.apache.hadoop.yarn.state.StateMachineFactory.access$500(StateMachineFactory.java:46)
>         at 
> org.apache.hadoop.yarn.state.StateMachineFactory$InternalStateMachine.doTransition(StateMachineFactory.java:487)
>         - locked <0x00007fc8852f8200> (a 
> org.apache.hadoop.yarn.state.StateMachineFactory$InternalStateMachine)
>         at 
> org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.RMContainerImpl.handle(RMContainerImpl.java:474)
>         at 
> org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.RMContainerImpl.handle(RMContainerImpl.java:65)
> {quote}



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