Hadoop Resources
I thought of putting Hadoop recourses together in this post
Apache
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MapReduce Tutorial ||Quick Start setup [Versions keeps increasing , see the URL for latest]
API Docs || Wiki || Source Control
Yahoo
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Hadoop Blog || Yahoo Hadoop Tutorial
Cloudera Video Training
Books
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Hadoop: The Definitive Guide / Pro Hadoop
Blogs:
What Hadoop is good at
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IRC : irc.freenode.net room : #hadoop