Explain what does the conf.setMapper Class do in MapReduce?
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List the network requirements for using Hadoop ?
Compare Pig vs Hive vs Hadoop MapReduce?
What is a distributed cache in mapreduce framework?
What combiners are and when you should use a combiner in a mapreduce job?
What do you mean by data locality?
What happens if the quantity of the reducer is 0 in mapreduce?
How can we assure that the values regarding a particular key goes to the same reducer?
What are the steps involved in MapReduce framework?
Explain the sequence of execution of all the components of MapReduce like a map, reduce, recordReader, split, combiner, partitioner, sort, shuffle.
What is identity mapper and chain mapper?
In Map Reduce why map write output to Local Disk instead of HDFS?
What is Distributed Cache in the MapReduce Framework?
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