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How much space will the split occupy in Mapreduce?
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What is Data Locality in Hadoop?
what is JobTracker in Hadoop? What are the actions followed by Hadoop?
Explain JobConf in MapReduce.
Explain how mapreduce works.
Why Mapreduce output written in local disk?
How many times combiner is called on a mapper node in Hadoop?
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?
What is the key- value pair in MapReduce?
Name job control options specified by mapreduce.
Define Writable data types in Hadoop MapReduce?
Explain how do ‘map’ and ‘reduce’ work?
What is a "map" in Hadoop?
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