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eBay open sources a big, fast SQL-on-Hadoop database

Online auction site eBay has open sourced a database technology called Kylin that the company says enables fast queries over even petabytes of data stored in Hadoop. eBay isn’t a big data user on par with companies like Google and Facebook, but it does run technologies such as Hadoop at a fairly large scale and Kylin seems a good example of the type of innovation it’s doing on top of them.

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