This PR https://github.com/apache/openwhisk/pull/4706 move openwhisk to using Java 11 for building and running the controller/invoker containers. It has been open since Oct 30 with no comments since Nov 14. It was covered at the Dec 4 community call https://cwiki.apache.org/confluence/display/OPENWHISK/2019-12-04+OW+Tech+Interchange+Meeting+Notes and there was agreement to merge the PR.
Accordingly, I will merge it next week. -r
