Acknowledgments

I would like to thank the people of Attributor.com, as they provided me the opportunity to learn Hadoop. They gracefully let my mistakes pass—and there were some large-scale mistakes—and welcomed my successes.

I would also like to thank Richard M. Stallman, one of the giants who support the world. I remember the days when I couldn't afford to buy a compiler, and had to sneak time on the university computers, when only people who signed horrible NDAs and who worked at large organizations could read the Unix source code. His dedication and yes, fanaticism, has changed our world substantially for the better. Thank you, Richard.

Hadoop rides on the back, sweat, and love of Doug Cutting, and many people of Yahoo! Inc. Thank you Doug and ...

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