What are the four essential parameters of a mapper?
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How do reducers communicate with each other?
Can we rename the output file?
Is it important for Hadoop MapReduce jobs to be written in Java?
What is optimal size of a file for distributed cache?
What are the fundamental configurations parameters specified in map reduce?
What is the relation between MapReduce and Hive?
When should you use a reducer?
Explain the input type/format in mapreduce by default?
What is reduce side join in mapreduce?
What is OutputCommitter?
What does a split do?
How can we assure that the values regarding a particular key goes to the same reducer?
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