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What is Combiner in MapReduce?
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Difference between mapreduce and spark
what are the basic parameters of a Mapper?
What is the relationship between Job and Task in Hadoop?
How many Reducers run for a MapReduce job?
How to submit extra files(jars, static files) for MapReduce job during runtime?
What are the various configuration parameters required to run a mapreduce job?
Explain slot in Hadoop Map-Reduce v1?
What is the utility of using Writable Comparable Custom Class in Map Reduce code?
What happens when a datanode fails ?
What is the sequence of execution of Mapper, Combiner, and Partitioner in MapReduce?
What are the advantages of using mapreduce with hadoop?
What is the need of MapReduce?
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