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I’m sad, I expected a more up to date product from O'Reilly. i lots of the books

Problems with hadoop videos

I am taking the Hadoop Track and 1) the sound is not very good - I have to set my sound to the highest level to hear the instructor, 2) the links mentioned in the lectures are dead - in particular the links, 3) although the information is very good and well presented, it is out of date. Thank you.
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