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What is a "map" in Hadoop?


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More MapReduce Interview Questions

How to change the name of the output file from part-r-00000 in Hadoop MapReduce?

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what happens when Hadoop spawned 50 tasks for a job and one of the task failed?

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What are the main components of MapReduce Job?

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What is KeyValueTextInputFormat in Hadoop MapReduce?

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What is the key- value pair in Hadoop MapReduce?

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How to set the number of reducers?

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

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What is mapper in map reduce?

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Explain InputSplit in Hadoop MapReduce?

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Why is Apache Spark faster than Hadoop MapReduce?

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What is the default input type in MapReduce?

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