How can you add the arbitrary key-value pairs in your mapper?


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More MapReduce Interview Questions

With the help of two examples name the map and reduce function purpose

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In MapReduce how to change the name of the output file from part-r-00000?

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Explain the sequence of execution of all the components of MapReduce like a map, reduce, recordReader, split, combiner, partitioner, sort, shuffle.

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Explain what is distributed cache in mapreduce framework?

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Why is Apache Spark faster than Hadoop MapReduce?

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What is the input type/format in MapReduce by default?

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what are the most common input formats defined in Hadoop?

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Can we submit the mapreduce job from slave node?

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How to optimize MapReduce Job?

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What combiners are and when you should use a combiner in a mapreduce job?

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What is the need of MapReduce in Hadoop?

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What is Distributed Cache in the MapReduce Framework?

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