How MapReduce Works

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How MapReduce Works
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This is one of the best explanations of hadoop out there. Most other videos are just a voice describing some super vague diagrams that relegate "Map" and "Reduce" to small text boxes with no further explanation. Actually explaining that Map and Reduce are programs distributed through a Hadoop network to distribute query processing, eliminating bandwidth and processing bottlenecks, helped me so much.

philsburydoboy