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What is the key- value pair in MapReduce?
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Whether the output of mapper or output of partitioner written on local disk?
Why can aggregation not be done in Mapper in 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?
What is the Hadoop MapReduce API contract for a key and value Class?
What is mapreduce algorithm?
What are the fundamental configurations parameters specified in map reduce?
Does Partitioner run in its own JVM or shares with another process?
What is Reducer in MapReduce?
What are the data components used by Hadoop?
What are the configuration parameters in the 'MapReduce' program?
Explain slot in Hadoop Map-Reduce v1?
What does conf.setmapper class do?
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