How many numbers of reducers run in Map-Reduce Job?


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More MapReduce Interview Questions

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

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

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Define speculative execution?

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What combiners is and when you should use a combiner in a MapReduce Job?

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What is a "map" in Hadoop?

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What is the difference between Job and Task in MapReduce?

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What is Distributed Cache in the MapReduce Framework?

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what does the conf.setMapper Class do ?

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Explain combiners.

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How many Mappers run for a MapReduce job?

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What is the role of recordreader in hadoop mapreduce?

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What do you understand by compute and storage nodes?

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