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Explain what does the conf.setmapper class do?


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More MapReduce Interview Questions

Define the purpose of the partition function in mapreduce framework

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What are the various input and output types supported by mapreduce?

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Which interface needs to be implemented to create Mapper and Reducer for the Hadoop?

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What are the key differences between Pig vs MapReduce?

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Mention what is the hadoop mapreduce apis contract for a key and value class?

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What is Data Locality in Hadoop?

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Explain task granularity

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What is the process of changing the split size if there is limited storage space on Commodity Hardware?

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How to compress mapper output in Hadoop?

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Clarify what combiners are and when you should utilize a combiner in a map reduce job?

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What is the need of MapReduce in Hadoop?

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What is optimal size of a file for distributed cache?

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