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  1. Hadoop Map/Reduce
  2. MAPREDUCE-4423

Potential infinite fetching of map output

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Details

    • Bug
    • Status: Closed
    • Critical
    • Resolution: Fixed
    • 0.23.3, 2.0.0-alpha, 3.0.0-alpha1
    • 0.23.3, 2.0.2-alpha
    • mrv2
    • None

    Description

      Inside Fetcher.java there are a few cases where an error can happen and the corresponding map task is not marked as a fetch failure. One of these is if the Shuffle server returns a malformed result.

      MAPREDUCE-3992 makes this case a lot less common, but it is still possible. IF the shuffle handler always returns a malformed result, but a OK response the Fetcher will never stop trying to fetch those results.

      Attachments

        1. MR-4423-trunk.txt
          15 kB
          Robert Joseph Evans
        2. MR-4423-branch-0.23.txt
          15 kB
          Robert Joseph Evans
        3. MR-4423-trunk.txt
          12 kB
          Robert Joseph Evans
        4. MR-4423.txt
          12 kB
          Robert Joseph Evans
        5. MR-4423.txt
          11 kB
          Robert Joseph Evans
        6. MR-4423.txt
          11 kB
          Robert Joseph Evans

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            revans2 Robert Joseph Evans
            revans2 Robert Joseph Evans
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            Dates

              Created:
              Updated:
              Resolved: