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What is shuffling in mapreduce?
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Explain how do ‘map’ and ‘reduce’ work?
Why Mapreduce output written in local disk?
Where sorting is done in Hadoop MapReduce Job?
How many InputSplits is made by a Hadoop Framework?
How to specify more than one directory as input to the MapReduce Job?
what does the conf.setMapper Class do ?
What is MapReduce in Hadoop?
In MapReduce, ideally how many mappers should be configured on a slave?
How to overwrite an existing output file/dir during execution of Hadoop MapReduce jobs?
Clarify what combiners are and when you should utilize a combiner in a map reduce job?
What are the fundamental configurations parameters specified in map reduce?
Explain what is shuffling in mapreduce?
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