Define speculative execution?


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More MapReduce Interview Questions

Developing a MapReduce Application?

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What is the sequence of execution of Mapper, Combiner, and Partitioner in MapReduce?

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How to set which framework would be used to run mapreduce program?

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Explain what are the basic parameters of a mapper?

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What happens when a datanode fails ?

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What MapReduce framework consists of?

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How to create custom key and custom value in MapReduce Job?

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What do you know about nlineinputformat?

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What are the primary phases of a Reducer?

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how to proceed to write your first mapreducer program?

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Name job control options specified by mapreduce.

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Clarify what combiners are and when you should utilize a combiner in a map reduce job?

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