What can be optimum value for Reducer?
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Explain how mapreduce works.
what is "map" and what is "reducer" in Hadoop?
How many Mappers run for a MapReduce job?
What is a scarce system resource?
What is a distributed cache in mapreduce framework?
What happens when the node running the map task fails before the map output has been sent to the reducer?
What is shuffleing in mapreduce?
What is Reduce only jobs?
what is the Hadoop MapReduce APIs contract for a key and value class?
What is shuffling in mapreduce?
what are the basic parameters of a Mapper?
What is Data Locality in Hadoop?
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