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What are ‘reduces’?


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More MapReduce Interview Questions

How does fault tolerance work in mapreduce?

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What is the next step after Mapper or MapTask?

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How to change a number of mappers running on a slave in MapReduce?

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Is Mapreduce Required For Impala? Will Impala Continue To Work As Expected If Mapreduce Is Stopped?

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What is the function of mapreducer partitioner?

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What can be optimum value for Reducer?

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What are ‘maps’ and ‘reduces’?

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What is the use of InputFormat in MapReduce process?

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What counter in Hadoop MapReduce?

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What is map/reduce job in hadoop?

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Why can aggregation not be done in Mapper in MapReduce?

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Explain what does the conf.setMapper Class do in MapReduce?

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