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Big data can be difficult to handle using traditional data-bases. Apache Hadoop is a NoSQL applications framework that runs on distributed clusters. This lets it scale to huge datasets. If you need analytic information from your data, Hadoop's the way togo. Hadoop in Action introduces the subject and teachers you how to write programs in the MapReduce style. It starts with a few easy examples and then moves quickly to show Hadoop use in more complex data analysis tasks. included are best practices and design patterns of MapReduce programming.