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CCD-333 · Question #21
CCD-333 Question #21: Real Exam Question with Answer & Explanation
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Question
What happens in a MapReduce job when you set the number of reducers to zero?
Options
- ANo reducer executes, but the mappers generate no output.
- BNo reducerexecutes, and the output of each mapper is written to a separate file in HDFS.
- CNo reducer executes, but the outputs ofall the mappers are gathered together and written to a
- DSetting the number of reducers to zero is invalid, and an exception is thrown.
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