Apache Tajo, a relational database warehouse system for Hadoop, has graduated to to-level status within the Apache Software Foundation. It might be easy to overlook Tajo because its creators, committers and users are largely based in Korea — and because there’s a whole lot of similar technologies, including one developed at Facebook — but the project could be a dark horse in the race for mass adoption. Among Tajo’s lead contributors are an engineer from LinkedIn and members of the Hortonworks technical team, which suggests those companies see some value in it even among the myriad other options.

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