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What is the difference between map and reduce?


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More MapReduce Interview Questions

For a job in Hadoop, is it possible to change the number of mappers to be created?

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Explain what is shuffling in mapreduce?

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In MapReduce Data Flow, when Combiner is called?

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What are the main components of MapReduce Job?

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How is reporting controlled in hadoop?

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What are mapreduce new and old apis while writing map reduce program?. Explain how it works

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Explain about the basic parameters of mapper and reducer function

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

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

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Why Hadoop MapReduce?

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Map reduce jobs are failing on a cluster that was just restarted. They worked before restart. What could be wrong?

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What is the difference between HDFS block and input split?

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