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Why Mapreduce output written in local disk?
What are the configuration parameters in the 'MapReduce' program?
What is a combiner and where you should use it?
How to set mappers and reducers for Hadoop jobs?
Can you tell us how many daemon processes run on a hadoop system?
What are advantages of Spark over MapReduce?
Which Sorting algorithm is used in Hadoop MapReduce?
Define Writable data types in Hadoop MapReduce?
What are the various input and output types supported by mapreduce?
In mapreduce what is a scarce system resource? Explain?
Why Mapper runs in heavy weight process and not in a thread in MapReduce?
In Hadoop what is InputSplit?
Explain InputSplit in Hadoop MapReduce?
Explain about the partitioning, shuffle and sort phase in MapReduce?
What is difference between an input split and hdfs block?
