Explain what is shuffling in mapreduce?
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what are the basic parameters of a Mapper?
Compare Pig vs Hive vs Hadoop MapReduce?
Why can aggregation not be done in Mapper in MapReduce?
How do ‘map’ and ‘reduce’ work?
What is InputFormat in Hadoop MapReduce?
What is SequenceFileInputFormat in Hadoop MapReduce?
How will you submit extra files or data ( like jars, static files, etc. ) For a mapreduce job during runtime?
How to create a custom key and custom value in MapReduce Job?
Explain combiners.
What comes in Hadoop 2.0 and MapReduce V2 YARN
What is mapreduce algorithm?
what are the main configuration parameters that user need to specify to run Mapreduce Job ?
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