Cloudera
CCD-333 · Question #51
In a MapReduce job, the reducer receives all values associated with the same key. Which statement is most accurate about the ordering of these values?
The correct answer is A. The values are in sorted order. See the full explanation below for the reasoning.
Question
In a MapReduce job, the reducer receives all values associated with the same key. Which statement is most accurate about 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
- CThe values are arbitrarily ordered, but multiple runs of the same MapReduce job will always
- DSince the values come from mapper outputs, the reducers will receive contiguous sections of
How the community answered
(31 responses)- A77% (24)
- B6% (2)
- C13% (4)
- D3% (1)
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