What are the identity mapper and reducer in MapReduce?


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More MapReduce Interview Questions

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

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what are the basic parameters of a Mapper?

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How is reporting controlled in hadoop?

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What is the data storage component used by Hadoop?

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What Are Good Use Cases For Impala As Opposed To Hive Or MapReduce?

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What is Mapper in Hadoop MapReduce?

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Where sorting is done on mapper node or reducer node in MapReduce?

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What is KeyValueTextInputFormat in Hadoop MapReduce?

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What are the disservices of utilizing Apache Spark over Hadoop MapReduce?

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How to set mappers and reducers for MapReduce jobs?

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What is SequenceFileInputFormat?

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Explain how do ‘map’ and ‘reduce’ work?

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