[haglin]

You were unlucky, the hg server went down during the weekend http://mail.openjdk.java.net/pipermail/jdk-dev/2018-October/...

This doesn't happen often.

It's definitely not a research project. There are many large companies who contribute to OpenJDK, for example Oracle, SAP, Red Hat, SAP, Google and Amazon

https://blogs.oracle.com/java-platform-group/building-jdk-11...