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CCD-333 · Question #23
CCD-333 Question #23: Real Exam Question with Answer & Explanation
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Question
Combiners Increase the efficiency of a MapReduce program because:
Options
- AThey provide a mechanism for different mappers to communicate with each Other, thereby
- BThey provide an optimization and reduce the total number of computations that are needed to
- CThey aggregate intermediate map output locally on each individual machine and therefore
- DThey aggregate intermediate map output horn a small number of nearby (i.e., rack-local)
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