I'm not aware of plans to build out official clients for those other APIs;
when I've written python programs to integrate with them I've usually
called them through http directly.
I'm not familiar with OpenAPI, but looking at it briefly, it seems like an
interesting concept and a potential way to
Seconding (thirding?) the idea that keeping JDK 8 for integration with
Hadoop is important. Druid's Hadoop integration is built against Hadoop 2.x
and that version only supports JDK 8:
https://cwiki.apache.org/confluence/display/HADOOP/Hadoop+Java+Versions. We
shouldn't drop JDK 8 support until we
