How to optimize Hadoop MapReduce Job?
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What is shuffleing in mapreduce?
How many Reducers run for a MapReduce job in Hadoop?
what is "map" and what is "reducer" in Hadoop?
What is Distributed Cache in the MapReduce Framework?
Name job control options specified by mapreduce.
What is Combiner in MapReduce?
What is the inputsplit in map reduce software?
Map reduce jobs take too long. What can be done to improve the performance of the cluster?
what is distributed cache in mapreduce framework?
Explain what are the basic parameters of a mapper?
Define MapReduce?
What is Reduce only jobs?
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