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  1. Hadoop Map/Reduce
  2. MAPREDUCE-2632

Avoid calling the partitioner when the numReduceTasks is 1.

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Details

    • Improvement
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • 0.23.0
    • 3.0.0-alpha1
    • None
    • None
    • Incompatible change, Reviewed
    • A partitioner is now only created if there are multiple reducers.

    Description

      We can avoid the call to the partitioner when the number of reducers is 1.This will avoid the unnecessary computations by the partitioner.

      Attachments

        1. mr-2632-4.patch
          11 kB
          Karthik Kambatla
        2. mr-2632-3.patch
          9 kB
          Karthik Kambatla
        3. mr-2632-2.patch
          6 kB
          Karthik Kambatla
        4. 0001-MAPREDUCE-2632.patch
          7 kB
          Sunil G
        5. MAPREDUCE-2632-1.patch
          9 kB
          Ravi Teja Ch N V
        6. MAPREDUCE-2632.patch
          3 kB
          Ravi Teja Ch N V

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              sunilg Sunil G
              raviteja Ravi Teja Ch N V
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              Dates

                Created:
                Updated:
                Resolved: