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What is Apache Hadoop? - -O’Reilly Radar

Read More About: big data, hadoop, mapreduce, mongodb

Apache Hadoop has been the driving force behind the growth of the big data industry. You'll hear it mentioned often, along with associated technologies such as Hive and Pig. But what does it do, and why do you need all its strangely-named friends, such as Oozie, Zookeeper and Flume?

http://radar.oreilly.com/2012/02/what-is-apache-hadoop.html

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