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?
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In which kind of scenarios MapReduce jobs will be more useful than PIG in Hadoop?
For a job in Hadoop, is it possible to change the number of mappers to be created?
What do you understand by compute and storage nodes?
Explain how do ‘map’ and ‘reduce’ work?
When should you use a reducer?
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