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Details Steps can be found at the below URL
http://answers.oreilly.com/topic/2141-how-mapreduce-works-with-hadoop/
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Hadoop at Yahoo!
http://developer.yahoo.com/hadoop/
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Learn More on Hadoop
http://wiki.apache.org/hadoop/
http://en.wikipedia.org/wiki/MapReduce
http://labs.google.com/papers/mapreduce.html
http://hadoop.apache.org/
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Books on Hadoop
Hadoop: The Definitive Guide By Tom White
Hadoop in Action
Pro Hadoop
