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https://issues.apache.org/jira/browse/HADOOP-7964?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13184395#comment-13184395
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Suresh Srinivas commented on HADOOP-7964:
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I committed the change to trunk and merged it into 0.23. Daryn, when you get a
chance, please upload 0.20 version of the patch.
> Deadlock in class init.
> -----------------------
>
> Key: HADOOP-7964
> URL: https://issues.apache.org/jira/browse/HADOOP-7964
> Project: Hadoop Common
> Issue Type: Bug
> Components: security, util
> Affects Versions: 0.20.205.0, 0.24.0, 0.23.1, 1.0.0, 1.1.0
> Reporter: Kihwal Lee
> Assignee: Daryn Sharp
> Priority: Blocker
> Attachments: HADOOP-7964-2.patch, HADOOP-7964-3.patch,
> HADOOP-7964.patch
>
>
> After HADOOP-7808, client-side commands hang occasionally. There are cyclic
> dependencies in NetUtils and SecurityUtil class initialization. Upon initial
> look at the stack trace, two threads deadlock when they hit the either of
> class init the same time.
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