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From "Devaraj Das (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-7268) FileContext.getLocalFSFileContext() behavior needs to be fixed w.r.t tokens
Date Mon, 09 May 2011 05:04:03 GMT
FileContext.getLocalFSFileContext() behavior needs to be fixed w.r.t tokens
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                 Key: HADOOP-7268
                 URL: https://issues.apache.org/jira/browse/HADOOP-7268
             Project: Hadoop Common
          Issue Type: Bug
          Components: fs, security
    Affects Versions: 0.23.0
            Reporter: Devaraj Das
             Fix For: 0.23.0


FileContext.getLocalFSFileContext() instantiates a FileContext object upon the first call
to it, and for all subsequent calls returns back that instance (a static localFsSingleton
object). With security turned on, this causes some hard-to-debug situations when that fileContext
is used for doing HDFS operations. This is because the UserGroupInformation is stored when
a FileContext is instantiated. If the process in question wishes to use different UserGroupInformation
objects for different file system operations (where the corresponding FileContext objects
are obtained via calls to FileContext.getLocalFSFileContext()), it doesn't work.

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