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MapReduce
In MapReduce, map and reduce work together but they are 2 different concepts and perform distinctive functionality.
Map - application or function
Reduce - take the outputs from Map as inputs then perform aggregation computation
Interesting vidoes
http://research.google.com/roundtable/MR.html
O'Reilly Webcast: An Introduction to Hadoop
Interesting vidoes
http://research.google.com/roundtable/MR.html
O'Reilly Webcast: An Introduction to Hadoop
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