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Date: Wed, 11 Jan 2012 15:50:40 +0000 (UTC)
From: "Daryn Sharp (Updated) (JIRA)" <jira@apache.org>
To: common-issues@hadoop.apache.org
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Subject: [jira] [Updated] (HADOOP-7964) Deadlock in class init.
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     [ https://issues.apache.org/jira/browse/HADOOP-7964?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Daryn Sharp updated HADOOP-7964:
--------------------------------

    Attachment: HADOOP-7964-3.patch

Didn't generate patch correctly for moved file.  Let's try again.
                
> 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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