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_________ function is responsible for consolidating the results produced by each of the Map() functions/tasks.

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+1 vote
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in Hadoop by (122k points)
_________ function is responsible for consolidating the results produced by each of the Map() functions/tasks.

(a) Reduce

(b) Map

(c) Reducer

(d) All of the mentioned

I have been asked this question during an interview.

Query is from Introduction to Mapreduce topic in division Mapreduce of Hadoop

1 Answer

+1 vote
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Best answer
The correct option is (a) Reduce

To explain I would say: Reduce function collates the work and resolves the results.

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