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What are the Main configuration parameters that user need to specify to run Mapreduce Job ?



On high level, the user of mapreduce framework needs to specify the following things:
    • The  job’s input location(s) in the distributed file system.
    • The  job’s output location in the distributed file system.
    • The input format.
    • The output format.
    • The class containing the map function.
    • The class containing the reduce function but it is optional.
    • The JAR file containing the mapper and reducer classes and driver classes.