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Mapreduce

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  • pretty clear and concise explanation!
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Transcript

  • 1. 3
    MAPREDUCE
    4
    3
    2
  • 2. K
    V
    1
    MAP
    1
    1
    1
    1
    MAP
    1
    1
    1
    1
    MAP
    1
    1
    1
  • 3.
  • 4. 1
    SORT
    1
    1
    1
    1
    SORT
    1
    1
    1
    1
    SORT
    1
    1
    1
  • 5. 1
    SORT
    REDUCE
    1
    4
    1
    1
    1
    SORT
    REDUCE
    1
    2
    1
    3
    1
    1
    REDUCE
    SORT
    1
    3
    1
    1
  • 6. 1
    1
    SORT
    MAP
    REDUCE
    1
    1
    4
    1
    1
    1
    1
    1
    1
    MAP
    SORT
    REDUCE
    1
    1
    2
    1
    1
    3
    1
    1
    1
    1
    REDUCE
    MAP
    SORT
    1
    1
    3
    1
    1
    1
    1

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