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Explain what does the conf.setmapper class do?


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More MapReduce Interview Questions

what is storage and compute nodes?

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Explain what is distributed cache in mapreduce framework?

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What is a partitioner and how the user can control which key will go to which reducer?

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Compare RDBMS with Hadoop MapReduce.

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How do reducers communicate with each other?

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How to optimize Hadoop MapReduce Job?

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

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How does fault tolerance work in mapreduce?

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What is Hadoop Map Reduce ?

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What are the benefits of Spark over MapReduce?

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What does a 'MapReduce Partitioner' do?

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What is Counter in MapReduce?

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