Hadoop
Hadoop. Origins & Applications. Christopher Smith Xavier Stevens John Carnahan. Original Map & Reduce. LISP map f(x) [x 0 , x 1 , …, x n ] yields: [f(x 0 ), f(x 1 ), …, f(x n )] reduce f(x, y) [x 0 , x1 , ..., x n ] yields: f(…f(f(x 0 , x 1 ), x 2 ) …, x n )
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