How hadoop mapreduce works?

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More MapReduce Interview Questions

Is it mandatory to set input and output type/format in MapReduce?

What are the advantages of using mapreduce with hadoop?

Explain what combiners are and when you should use a combiner in a mapreduce job?

Does Partitioner run in its own JVM or shares with another process?

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In MapReduce how to change the name of the output file from part-r-00000?

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What combiners is and when you should use a combiner in a MapReduce Job?

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