What is shuffling and sorting in mapreduce?


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More MapReduce Interview Questions

How can we assure that the values regarding a particular key goes to the same reducer?

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Is it possible to rename the output file?

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Explain InputSplit in Hadoop MapReduce?

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Map reduce jobs take too long. What can be done to improve the performance of the cluster?

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How to submit extra files(jars,static files) for MapReduce job during runtime in Hadoop?

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Mention what is the next step after mapper or maptask?

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Which are the methods in the mapper interface?

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What is identity mapper and identity reducer?

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What do you understand by the term Straggler ?

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How to set the number of mappers for a MapReduce job?

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

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What is Output Format in MapReduce?

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