How to optimize Hadoop MapReduce Job?
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what does the text input format do?
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Explain the process of spilling in Hadoop MapReduce?
What are the identity mapper and reducer in MapReduce?
What is a scarce system resource?
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what daemons run on a master node and slave nodes?
What are combiners? When should I use a combiner in my MapReduce Job?
How can we assure that the values regarding a particular key goes to the same reducer?
What are the main components of MapReduce Job?
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