What is the need of MapReduce in Hadoop?
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Explain combiners.
What is a TaskInstance?
What are the configuration parameters in the 'MapReduce' program?
What is the fundamental difference between a MapReduce Split and a HDFS block?scale data processing?
When should you use a reducer?
What is the difference between Reducer and Combiner in Hadoop MapReduce?
How to write MapReduce Programs?
How can we control particular key should go in a specific reducer?
How is Spark not quite the same as MapReduce? Is Spark quicker than MapReduce?
Is it necessary to write a mapreduce job in java?
Can MapReduce program be written in any language other than Java?
what is distributed cache in mapreduce framework?
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