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Posted to hdfs-dev@hadoop.apache.org by "Kihwal Lee (JIRA)" <ji...@apache.org> on 2013/05/01 23:30:16 UTC

[jira] [Created] (HDFS-4786) WebHdfsFileSystem hangs on close()

Kihwal Lee created HDFS-4786:
--------------------------------

             Summary: WebHdfsFileSystem hangs on close()
                 Key: HDFS-4786
                 URL: https://issues.apache.org/jira/browse/HDFS-4786
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: webhdfs
    Affects Versions: 2.0.4-alpha
            Reporter: Kihwal Lee


When close() is called via fs shoutdown hook, the synchronized method, removeRenewAction() hangs. This is because DelegationTokenRenewer calls DelayQueue.take() inside a synchronized block. Since this is a blocking call, it hangs forever.

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