Hadoop
Hadoop is a software platform that lets one easily write and run applications that process vast amounts of data.
http://hadoop.apache.org/core/
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Hadoop is an open source volunteer project under the Apache Software Foundation.
Hadoopは、Javaで書かれた分散コンピューティングプラットホーム。MapReduceを実装。
via http://d.hatena.ne.jp/naoya/20080513/1210684438