Explain what does the conf.setmapper class do?


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More MapReduce Interview Questions

What happens when the node running the map task fails before the map output has been sent to the reducer?

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Whether the output of mapper or output of partitioner written on local disk?

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What counter in Hadoop MapReduce?

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What do sorting and shuffling do?

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When should you use a reducer?

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What is the next step after Mapper or MapTask?

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What are the identity mapper and reducer in MapReduce?

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What are the advantages of using map side join in mapreduce?

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What happens if the quantity of the reducer is 0 in mapreduce?

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What are ‘maps’ and ‘reduces’?

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What is Mapper in Hadoop MapReduce?

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How can you add the arbitrary key-value pairs in your mapper?

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