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  1. Hadoop HDFS
  2. HDFS-1331

dfs -test should work like /bin/test

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Details

    • Bug
    • Status: Closed
    • Minor
    • Resolution: Fixed
    • 0.20.2, 2.0.2-alpha, 3.0.0-alpha1
    • 2.0.3-alpha
    • tools
    • None
    • Incompatible change, Reviewed
    • "test" will not print a warning for non-existent paths when testing for existence

    Description

      hadoop dfs -test doesn't act like its shell equivalent, making it difficult to actually use if you are used to the real test command:

      hadoop:
      $hadoop dfs -test -d /nonexist; echo $?
      test: File does not exist: /nonexist
      255

      shell:
      $ test -d /nonexist; echo $?
      1

      a) Why is it spitting out a message? Even so, why is it saying file instead of directory when I used -d?

      b) Why is the return code 255? I realize this is documented as '0' if true. But docs basically say the value is undefined if it isn't.

      c) where is -f?

      d) Why is empty -z instead of -s ? Was it a misunderstanding of the man page?

      Attachments

        1. hdfs1331.txt
          5 kB
          Andy Isaacson
        2. hdfs1331-2.txt
          5 kB
          Andy Isaacson
        3. hdfs1331-3.txt
          5 kB
          Andy Isaacson
        4. hdfs1331-4.txt
          6 kB
          Andy Isaacson
        5. hdfs1331-with-hadoop8994.txt
          6 kB
          Andy Isaacson

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            adi2 Andy Isaacson
            aw Allen Wittenauer
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              Updated:
              Resolved:

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