Does Partitioner run in its own JVM or shares with another process?
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What is the Reducer used for?
What is Combiner in MapReduce?
Illustrate a simple example of the working of MapReduce.
Explain how do ‘map’ and ‘reduce’ work?
What are the key differences between Pig vs MapReduce?
Why Mapreduce output written in local disk?
what does the text input format do?
Explain what are the basic parameters of a mapper?
Explain what combiners are and when you should use a combiner in a mapreduce job?
What is Mapper in Hadoop MapReduce?
What is KeyValueTextInputFormat in Hadoop MapReduce?
What is MapReduce? What are the syntax you use to run a MapReduce program?
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