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What is a "reducer" in Hadoop?


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More MapReduce Interview Questions

What are ‘reduces’?

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

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what is NameNode in Hadoop?

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What are the advantages of using mapreduce with hadoop?

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Explain about the basic parameters of mapper and reducer function

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Explain the Reducer's reduce phase?

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What is Mapper in Hadoop MapReduce?

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

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Where is Mapper output stored?

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

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What is shuffling in mapreduce?

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What is LazyOutputFormat in MapReduce?

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