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CCD-333 · Question #61
CCD-333 Question #61: 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 generate 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 reducers which is a potential bottleneck. A custom implementation of which of the following interfaces is most likely to reduce the amount of intermediate data transferred across the network?
Options
- AWritable
- BWritableComparable
- CInputFormat
- DOutputFormat
- ECombiner
- FPartitioner
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