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CCD-410 · Question #7
CCD-410 Question #7: Real Exam Question with Answer & Explanation
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Question
In a MapReduce job, the reducer receives all values associated with same key. Which statement best describes the ordering of these values?
Options
- 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
- DSince the values come from mapper outputs, the reducers will receive contiguous sections of sorted values.
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