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mapper or reducer?


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More MapReduce Interview Questions

How to compress mapper output in Hadoop?

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Explain the difference between a MapReduce InputSplit and HDFS block?

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What is a mapreduce algorithm?

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Explain what is “map” and what is "reducer" in hadoop?

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What are the main configuration parameters in a MapReduce program?

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What are the key differences between Pig vs MapReduce?

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Mention what are the main configuration parameters that user need to specify to run mapreduce job?

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