Explain the process of spilling in Hadoop MapReduce?
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What is the use of InputFormat in MapReduce process?
How to set the number of reducers?
What are ‘reduces’?
Map reduce jobs take too long. What can be done to improve the performance of the cluster?
How does Hadoop Classpath plays a vital role in stopping or starting in Hadoop daemons?
What is streaming?
Can there be no Reducer?
Explain about the partitioning, shuffle and sort phase
What is a "reducer" in Hadoop?
In MapReduce Data Flow, when Combiner is called?
What do you mean by data locality?
How to specify more than one directory as input to the MapReduce Job?