What do you mean by data locality?
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How to optimize Hadoop MapReduce Job?
What are the identity mapper and reducer in MapReduce?
what is NameNode in Hadoop?
Clarify what combiners are and when you should utilize a combiner in a map reduce job?
How to set which framework would be used to run mapreduce program?
What does a split do?
what are the three modes in which Hadoop can be run?
how Hadoop is different from other data processing tools?
What are advantages of Spark over MapReduce?
Differentiate Reducer and Combiner in Hadoop MapReduce?
Explain what is shuffling in mapreduce?
What is the Hadoop MapReduce API contract for a key and value Class?
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