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https://issues.apache.org/jira/browse/YARN-4563?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15126383#comment-15126383
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ASF GitHub Bot commented on YARN-4563:
--------------------------------------

GitHub user steveloughran opened a pull request:

    https://github.com/apache/hadoop/pull/72

    YARN-4563

    Attempt to document YARN security, including HADOOP_TOKEN_FILE_LOCATION 
propagation

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/steveloughran/hadoop 
HADOOP-12649-security/YARN-4653-yarn

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/hadoop/pull/72.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #72
    
----
commit 73baa11ff74201faa56ce1fc18941bdad43263fe
Author: Steve Loughran <ste...@apache.org>
Date:   2016-01-28T20:04:14Z

    YARN-4653 document YARN security: first pass

commit 778f623f7c436a975a1020d8a1eea55b67a630bf
Author: Steve Loughran <ste...@apache.org>
Date:   2016-01-29T20:04:53Z

    YARN-4653 document YARN security: more, though more is needed

commit 6b4ce5fa7ed6a83e471d14994bd26aa01bf37552
Author: Steve Loughran <ste...@apache.org>
Date:   2016-02-01T15:20:35Z

    YARN-4653 document YARN security with instructions on propagating oozie 
credentials

----


> ContainerMetrics deadlocks
> --------------------------
>
>                 Key: YARN-4563
>                 URL: https://issues.apache.org/jira/browse/YARN-4563
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: nodemanager
>         Environment: HDP 2.3.2 (Hadoop 2.7.1 + patches)
>            Reporter: Akira AJISAKA
>            Priority: Blocker
>         Attachments: 0001-YARN-4563.patch, jstack.log
>
>
> On one of our environment, some NodeManagers' webapp do not working. I found 
> a dead lock in the thread dump.
> {noformat}
> Found one Java-level deadlock:
> =============================
> "1193752357@qtp-907815246-22238":
>   waiting to lock monitor 0x0000000005e20a18 (object 0x00000000f6afa048, a 
> org.apache.hadoop.yarn.server.nodemanager.containermanager.monitor.ContainerMetrics),
>   which is held by "2107307914@qtp-907815246-19994"
> "2107307914@qtp-907815246-19994":
>   waiting to lock monitor 0x0000000001a000a8 (object 0x00000000d4f1e1f8, a 
> org.apache.hadoop.metrics2.impl.MetricsSystemImpl),
>   which is held by "Timer for 'NodeManager' metrics system"
> "Timer for 'NodeManager' metrics system":
>   waiting to lock monitor 0x00000000027ade88 (object 0x00000000f6582df0, a 
> org.apache.hadoop.yarn.server.nodemanager.containermanager.monitor.ContainerMetrics),
>   which is held by "1530638165@qtp-907815246-19992"
> "1530638165@qtp-907815246-19992":
>   waiting to lock monitor 0x0000000001a000a8 (object 0x00000000d4f1e1f8, a 
> org.apache.hadoop.metrics2.impl.MetricsSystemImpl),
>   which is held by "Timer for 'NodeManager' metrics system"
> {noformat}



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