If you don't speak press-release, this is a cool project to create an in-memory interop format for columnar data, so various tools can share data without a serialize/deserialize step which is very expensive compared to copying or sharing memory on the same machine or within a local network.

https://git-wip-us.apache.org/repos/asf?p=arrow.git;a=blob;f...

(edited post because I fail reading git and didn't notice the java implementation)