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CCD-410 · Question #40
CCD-410 Question #40: Real Exam Question with Answer & Explanation
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Question
You've written a MapReduce job that will process 500 million input records and generated 500 million key-value pairs. The data is not uniformly distributed. Your MapReduce job will create a significant amount of intermediate data that it needs to transfer between mappers and reduces which is a potential bottleneck. A custom implementation of which interface is most likely to reduce the amount of intermediate data transferred across the network?
Options
- APartitioner
- BOutputFormat
- CWritableComparable
- DWritable
- EInputFormat
- FCombiner
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