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Hadoop · Q30

Developing MapReduce Applications

Programming · Hadoop · question 30

Q30

What is the primary function of the Hadoop Reducer class in a MapReduce application?

A.
Aggregate values on the reducer side
Answer
B.
Generate intermediate key-value pairs
C.
Execute MapReduce jobs
D.
Read and parse input data

Answer: Option A

Solution

Answer: Option A
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