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How many Reducers run for a MapReduce job in Hadoop?


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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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What is Distributed Cache in the MapReduce Framework?

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Compare Pig vs Hive vs Hadoop MapReduce?

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What is the need of MapReduce in Hadoop?

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What is a TaskInstance?

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What is the problem with the small file in Hadoop?

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What do you know about nlineinputformat?

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In which kind of scenarios MapReduce jobs will be more useful than PIG in Hadoop?

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Which Sorting algorithm is used in Hadoop MapReduce?

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Mention what is the hadoop mapreduce apis contract for a key and value class?

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Name job control options specified by mapreduce.

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What is identity mapper and identity reducer?

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