Hortonworks Exam HDPCD Topic 1 Question 35 Discussion

Actual exam question for Hortonworks's HDPCD exam

Question #: 35
Topic #: 1

In a MapReduce job, the reducer receives all values associated with same key. Which statement best describes the ordering of these values?

AThe values are in sorted order.

BThe values are arbitrarily ordered, and the ordering may vary from run to run of the same MapReduce job.

CThe values are arbitrary ordered, but multiple runs of the same MapReduce job will always have the same ordering.

DSince the values come from mapper outputs, the reducers will receive contiguous sections of sorted values.

Show Suggested Answer

Suggested Answer: B

by Katina at Feb 25, 2023, 08:05 PM

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