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What is the need of key-value pair to process the data in MapReduce?


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More MapReduce Interview Questions

What is Output Format in MapReduce?

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Define Writable data types in Hadoop MapReduce?

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What is the need of MapReduce?

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what is distributed cache in mapreduce framework?

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What is the function of mapreducer partitioner?

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For a Hadoop job, how will you write a custom partitioner?

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What is LazyOutputFormat in MapReduce?

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Explain the process of spilling in MapReduce?

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Where the mapper's intermediate data will be stored?

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How to change the name of the output file from part-r-00000 in Hadoop MapReduce?

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What is the Reducer used for?

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What do sorting and shuffling do?

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