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https://issues.apache.org/jira/browse/HADOOP-8050?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13211588#comment-13211588
]
Hudson commented on HADOOP-8050:
--------------------------------
Integrated in Hadoop-Common-trunk-Commit #1757 (See
[https://builds.apache.org/job/Hadoop-Common-trunk-Commit/1757/])
HADOOP-8050. Deadlock in metrics. Contributed by Kihwal Lee. (Revision
1291084)
Result = SUCCESS
mattf : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1291084
Files :
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/impl/MetricsSourceAdapter.java
> Deadlock in metrics
> -------------------
>
> Key: HADOOP-8050
> URL: https://issues.apache.org/jira/browse/HADOOP-8050
> Project: Hadoop Common
> Issue Type: Bug
> Components: metrics
> Affects Versions: 0.20.204.0, 0.20.205.0, 0.23.0, 1.0.0
> Reporter: Kihwal Lee
> Assignee: Kihwal Lee
> Fix For: 1.0.1, 0.23.2
>
> Attachments: hadoop-8050-branch-1.patch.txt,
> hadoop-8050-branch-1.patch.txt, hadoop-8050-branch-1.patch.txt,
> hadoop-8050-branch-1.patch.txt, hadoop-8050-trunk.patch.txt,
> hadoop-8050-trunk.patch.txt, hadoop-8050-trunk.patch.txt,
> hadoop-8050.patch.txt
>
>
> The metrics serving thread and the periodic snapshot thread can deadlock.
> It happened a few times on one of namenodes we have. When it happens RPC
> works but the web ui and hftp stop working. I haven't look at the trunk too
> closely, but it might happen there too.
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