Describe what happens to a mapreduce job from submission to output?
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Different ways of debugging a job in MapReduce?
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What is a partitioner and how the user can control which key will go to which reducer?
How does Mappers run method works?
How to change the name of the output file from part-r-00000 in Hadoop MapReduce?
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Explain how mapreduce works.
What are the four essential parameters of a mapper?
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