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What is the sequence of execution of Mapper, Combiner, and Partitioner in MapReduce?
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What are the various configuration parameters required to run a mapreduce job?
Define the Use of MapReduce?
Explain combiners.
what are the basic parameters of a Mapper?
Why do we need MapReduce during Pig programming?
Explain job scheduling through JobTracker
In MapReduce, ideally how many mappers should be configured on a slave?
In MapReduce Data Flow, when Combiner is called?
When Namenode is down what happens to job tracker?
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 a distributed cache in mapreduce framework?
what is JobTracker in Hadoop? What are the actions followed by Hadoop?
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