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Re:Open-Sourcing Vespa, Yahoo’s Data Processing and Serving ... by RealJon on Wednesday September 27, 2017 @06:12PM (#15352802)
No, this is run by a single, very cohesive, very remote team.

There is some misidentification in your list (our .def files are nothing to do with Teamcenter). We use 2 languages because we Java and C++ have different strengths which make each suitable at different layers of the architecture. The rest is a combination of "for good reasons" and "leftover scraps" :-)

Re:Open-Sourcing Vespa, Yahoo’s Data Processing and Serving ... by TallGuyShort on Wednesday September 27, 2017 @11:26PM (#15354321)
Yeah I ran cloc on a few projects I'm very familiar with, and shell scripts that are interpreted with bash but not with a shebang because they're libraries sourced by others are called Bourne too. Just explaining what OP was getting at :)