The MaxMind data files *) added by https://gerrit.wikimedia.org/r/#/c/183551/10 seem to be available
at least under CC BY-SA:3.0: https://github.com/maxmind/MaxMind-DB/blob/master/LICENSE

But refinery is an Apache License, Version 2.0 project.

Is there a special licence agreement between WMF and MaxMind that allows this mixture?

If there is, please document it in refinery.
If there isn't, please clarify the licensing and document the process.

*)

• https://gerrit.wikimedia.org/r/#/c/183551/10/refinery-core/src/test/resources/GeoIP2-City-Test.mmdb
• https://gerrit.wikimedia.org/r/#/c/183551/10/refinery-core/src/test/resources/GeoIP2-Country-Test.mmdb
• https://gerrit.wikimedia.org/r/#/c/183551/10/refinery-hive/src/test/resources/GeoIP2-City-Test.mmdb
• https://gerrit.wikimedia.org/r/#/c/183551/10/refinery-hive/src/test/resources/GeoIP2-Country-Test.mmdb