How to create a custom key and custom value in MapReduce Job?


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More MapReduce Interview Questions

Difference between mapreduce and spark

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Is it necessary to write a mapreduce job in java?

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What is a "map" in Hadoop?

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Explain JobConf in MapReduce.

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What is shuffleing in mapreduce?

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A number of combiners can be changed or not in MapReduce?

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What is shuffling and sorting in Hadoop MapReduce?

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Describe what happens to a mapreduce job from submission to output?

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how can you debug Hadoop code?

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Is YARN a replacement of Hadoop MapReduce?

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What is a combiner and where you should use it?

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Can you tell us how many daemon processes run on a hadoop system?

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