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  1. ______________ is another implementation of the MapRunnable interface that runs mappers concurrently in a configurable number of threads.
    2. A.
    MultithreadedRunner
    B.
    MultithreadedMap
    C.
    MultithreadedMapRunner
    D.
    SinglethreadedMapRunner

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    Workspace

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    Answer : Option C

    Explanation :

    A RecordReader is little more than an iterator over records, and the map task uses one to generate record key-value pairs, which it passes to the map function.

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