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From "shanyu zhao (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-8914) HDFSCleanup thread holds reference to FileSystem
Date Wed, 19 Nov 2014 16:36:34 GMT
shanyu zhao created HIVE-8914:
---------------------------------

             Summary: HDFSCleanup thread holds reference to FileSystem
                 Key: HIVE-8914
                 URL: https://issues.apache.org/jira/browse/HIVE-8914
             Project: Hive
          Issue Type: Bug
          Components: WebHCat
    Affects Versions: 0.13.1
            Reporter: shanyu zhao
            Assignee: shanyu zhao


WebHCat server has a long running cleanup thread (HDFSCleanup) which holds a reference to
FileSystem. Because of this reference, many FileSystem related objects (e.g. MetricsSystemImpl)
cannot be garbage collected. Sometimes this causes OOM exception. Since the cleanup is done
every 12 hours by default, we can simply recreate a FileSystem when we need to use it.



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