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Explain InputSplit in Hadoop MapReduce?
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Is it legal to set the number of reducer task to zero? Where the output will be stored in this case?
Explain what is the function of mapreduce partitioner?
what is NameNode in Hadoop?
How can we assure that the values regarding a particular key goes to the same reducer?
Define MapReduce?
What is the need of MapReduce in Hadoop?
How do ‘map’ and ‘reduce’ work?
What is the sequence of execution of Mapper, Combiner, and Partitioner in MapReduce?
Mention when to use Map reduce mode?
Define the purpose of the partition function in mapreduce framework
When Namenode is down what happens to job tracker?
What is the job of blend () and repartition () in Map Reduce?
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