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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Created: (HDFS-967) DelegationTokenSecretManager lifecycle is inconsistent
Date Wed, 10 Feb 2010 02:50:28 GMT
DelegationTokenSecretManager lifecycle is inconsistent
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                 Key: HDFS-967
                 URL: https://issues.apache.org/jira/browse/HDFS-967
             Project: Hadoop HDFS
          Issue Type: Bug
    Affects Versions: 0.22.0
            Reporter: Todd Lipcon
         Attachments: hdfs-967.txt

FSNamesystem.dtSecretManager is initialized in FSNamesystem.initialize(), but not started
until activate(). In FSN.stop() it calls dtSecretManager.stopThreads so long as it's non-null,
but doesn't check that the threads have started (ie activate() may never have been called).
This causes an NPE in stopThreads()

To fix this, stopThreads should check tokenRemoverThread against null before interrupting
it.

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