All of these web giants rely on Hadoop, an open source software platform for crunching data across hundreds or even thousands of computer servers, and Hadoop is based on technology originally developed at Google. A little less than a decade ago, Google published two research papers describing some of the software that juggles data inside its data centers, including a platform called MapReduce, and in short order, a community of software developers — led by Facebook and Yahoo — recreated these tools with open source code.
Google Erects Patent Shield for the Open Source Internet
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