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In MapReduce, ideally how many mappers should be configured on a slave?


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More MapReduce Interview Questions

How to write a custom partitioner for a Hadoop MapReduce job?

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How do Hadoop MapReduce works?

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What happens when a DataNode fails during the write process?

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What are the fundamental configurations parameters specified in map reduce?

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What do you mean by shuffling and sorting in MapReduce?

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Explain what is “map” and what is "reducer" in hadoop?

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What is the relation between MapReduce and Hive?

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What combiners are and when you should use a combiner in a mapreduce job?

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What is the function of mapreducer partitioner?

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Explain what does the conf.setmapper class do?

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Why comparison of types is important for MapReduce?

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What can be optimum value for Reducer?

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