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How to optimize MapReduce Job?
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Does Partitioner run in its own JVM or shares with another process?
How to set mappers and reducers for MapReduce jobs?
Explain what is shuffling in mapreduce?
What are the various input and output types supported by mapreduce?
Does mapreduce programming model provide a way for reducers to communicate with each other? In a mapreduce job can a reducer communicate with another reducer?
How to sort intermediate output based on values in MapReduce?
Why Mapreduce output written in local disk?
what are the basic parameters of a Mapper?
What are the four essential parameters of a mapper?
Detail description of the Reducer phases?
Mention what is the hadoop mapreduce apis contract for a key and value class?
Explain about the basic parameters of mapper and reducer function
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