Clarify what is shuffling in map reduce?
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What is LazyOutputFormat in MapReduce?
Different ways of debugging a job in MapReduce?
In mapreduce what is a scarce system resource? Explain?
What are the main configuration parameters in a MapReduce program?
How many times combiner is called on a mapper node in Hadoop?
Is it important for Hadoop MapReduce jobs to be written in Java?
What is the key- value pair in Hadoop MapReduce?
What is Mapper in Hadoop MapReduce?
In which kind of scenarios MapReduce jobs will be more useful than PIG in Hadoop?
What is the difference between Job and Task in MapReduce?
Compare RDBMS with Hadoop MapReduce.
What is the fundamental difference between a MapReduce InputSplit and HDFS block?
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