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__________ maps input key/value pairs to a set of intermediate key/value pairs.

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__________ maps input key/value pairs to a set of intermediate key/value pairs.

(a) Mapper

(b) Reducer

(c) Both Mapper and Reducer

(d) None of the mentioned

The question was posed to me during an interview.

My question is from Introduction to Mapreduce in division Mapreduce of Hadoop

1 Answer

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Best answer
Right option is (a) Mapper

The explanation is: Maps are the individual tasks that transform input records into intermediate records.

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