How to overwrite an existing output file/dir during execution of Hadoop MapReduce jobs?
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What is the need of key-value pair to process the data in MapReduce?
What is OutputCommitter?
Can we submit the mapreduce job from slave node?
Explain the general mapreduce algorithm
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What is a "map" in Hadoop?
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what are the basic parameters of a Mapper?
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Why MapReduce uses the key-value pair to process the data?
What do you understand by the term Straggler ?
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