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How to specify more than one directory as input to the MapReduce Job?
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In MapReduce Data Flow, when Combiner is called?
Explain what is shuffling in mapreduce?
What is the data storage component used by Hadoop?
What is a MapReduce Combiner?
How can we assure that the values regarding a particular key goes to the same reducer?
What are the various configuration parameters required to run a mapreduce job?
What is a "reducer" in Hadoop?
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What are the advantages of using mapreduce with hadoop?
What is the role of recordreader in hadoop mapreduce?
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What is optimal size of a file for distributed cache?
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