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  1. Hadoop Map/Reduce
  2. MAPREDUCE-6044

Fully qualified intermediate done directory will break per-user dir creation on Windows

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Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • 2.6.0, 3.0.0-alpha1
    • 2.6.0
    • jobhistoryserver
    • None
    • Windows

    • Reviewed

    Description

      After MAPREDUCE-6032, the string of the intermediate done dir will be a fully qualified path.

      The following code in JobHistoryUtils tries to concat this path and user name to create a per-user dir path, using File.separator as the seperator (on Windows, it is "\").

        public static String getHistoryIntermediateDoneDirForUser(Configuration conf) throws IOException {
          return getConfiguredHistoryIntermediateDoneDirPrefix(conf) + File.separator
              + UserGroupInformation.getCurrentUser().getShortUserName();
        }
      

      Therefore, an intermediate done dir for user will become "hdfs://localhost:9201/mapred/history/done_intermediate\user". With the scheme available in the path, Path class will not replace "\" with "/", and finally FS cannot handle this path correctly: it will take "done_intermediateuser" as a single directory name.

      Attachments

        1. MAPREDUCE-6044.1.patch
          4 kB
          Zhijie Shen

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            zjshen Zhijie Shen
            zjshen Zhijie Shen
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