Hi folks, Forking a discussion based on HADOOP-15711. To summarize, there are issues with branch-2 tests running on java 7 (openjdk) which don't exist on java 8. From our testing, the build can pass with openjdk 8.
For branch-3, the work to move the build to use java 8 was done in HADOOP-14816 as part of the Dockerfile OS version change. HADOOP-16053 was filed to backport this OS version change to branch-2 (but without the java 7 -> java 8 change). So my proposal is to also make the java 7 -> java 8 version change in branch-2. As mentioned in HADOOP-15711, the main issue is around source and binary compatibility. I don't currently have a great answer, but one initial thought is to build source/binary against java 7 to ensure compatibility and run the rest of the build as java 8. Thoughts? Jonathan Hung
