CSC352 Problem of the Day

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Homework #4, Problem #2

  • Conditions:
    • Processing of wiki pages with Hadoop on 6-PC cluster
    • Same Mapper and same Reducer program to process two different input folders



Number of files Number of wiki pages Number of categories Execution Time
(seconds)
589 589 832 388
1 117,617 51,120 30.7
Ratio=589/1 Ratio=1/199 Ratio=1/61.4 Ratio=12.6/1



  • Discuss these results
  • Identify the parties responsible for this surprising difference
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