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what is NameNode in Hadoop?


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More MapReduce Interview Questions

What happens when a DataNode fails during the write process?

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What is SequenceFileInputFormat in Hadoop MapReduce?

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What is the process of changing the split size if there is limited storage space on Commodity Hardware?

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Explain what you understand by speculative execution

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What is map/reduce job in hadoop?

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Detail description of the Reducer phases?

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What is the Job interface in MapReduce framework?

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What is an identity mapper and identity reducer?

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

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what job does the conf class do?

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How is Spark not quite the same as MapReduce? Is Spark quicker than MapReduce?

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How does MapReduce framework view its input internally?

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