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What are ‘maps’ and ‘reduces’?


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More MapReduce Interview Questions

Which Sorting algorithm is used in Hadoop MapReduce?

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Why can aggregation not be done in Mapper in MapReduce?

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What is MapReduce?

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what does the text input format do?

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Explain JobConf in MapReduce.

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how to proceed to write your first mapreducer program?

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Which one will you decide for an undertaking – Hadoop MapReduce or Apache Spark?

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What are the main components of MapReduce Job?

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How to write a custom partitioner for a Hadoop MapReduce job?

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What is MapReduce? What are the syntax you use to run a MapReduce program?

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

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How many InputSplits is made by a Hadoop Framework?

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