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  1. Hadoop Common
  2. HADOOP-4842

Streaming combiner should allow command, not just JavaClass

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Details

    • Improvement
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 0.21.0
    • None
    • None
    • Reviewed
    • Streaming option -combiner allows any streaming command (not just Java class) to be a combiner.

    Description

      Streaming jobs are way slower than Java jobs for many reasons, but certainly stopping the shell-only programmer from using the combiner feature won't help. Right now, the streaming usage says:

      -mapper <cmd|JavaClassName> The streaming command to run
      -combiner <JavaClassName> Combiner has to be a Java class
      -reducer <cmd|JavaClassName> The streaming command to run

      Attachments

        1. patch-4842.txt
          6 kB
          Amareshwari Sriramadasu
        2. patch-4842-1.txt
          6 kB
          Amareshwari Sriramadasu
        3. patch-4842-2.txt
          8 kB
          Amareshwari Sriramadasu
        4. patch-4842-3.txt
          7 kB
          Amareshwari Sriramadasu

        Activity

          People

            amareshwari Amareshwari Sriramadasu
            menicosia Marco Nicosia
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            Dates

              Created:
              Updated:
              Resolved: