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Ranjeet • 34.60K Points
Instructor I 

Q. What is the role of the Combiner in the MapReduce model?

  • (A) Data compression
  • (B) Combine intermediate key-value pairs on the mapper side
  • (C) Aggregate values on the reducer side
  • (D) Data sorting and grouping
  • Correct Answer - Option(B)
  • Views: 20
  • Filed under category Hadoop

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