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https://issues.apache.org/jira/browse/HDFS-5132?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13752383#comment-13752383
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Hudson commented on HDFS-5132:
------------------------------

SUCCESS: Integrated in Hadoop-Hdfs-trunk #1505 (See 
[https://builds.apache.org/job/Hadoop-Hdfs-trunk/1505/])
HDFS-5132. Deadlock in NameNode between SafeModeMonitor#run and 
DatanodeManager#handleHeartbeat. Contributed by Kihwal Lee. (kihwal: 
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1517989)
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* 
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java

                
> Deadlock in NameNode between SafeModeMonitor#run and 
> DatanodeManager#handleHeartbeat
> ------------------------------------------------------------------------------------
>
>                 Key: HDFS-5132
>                 URL: https://issues.apache.org/jira/browse/HDFS-5132
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 2.1.0-beta
>            Reporter: Arpit Gupta
>            Assignee: Kihwal Lee
>            Priority: Blocker
>             Fix For: 3.0.0, 2.1.1-beta
>
>         Attachments: HDFS-5132.001.patch, HDFS-5132.patch, jstack.log
>
>
> While running nn load generator with 15 threads for 20 mins the standby 
> namenode deadlocked.

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