Github user joewitt commented on the issue:
https://github.com/apache/nifi/pull/2882
@david-streamlio its not likely we'll put a feature like this into an
already released line. It doesn't fit our semver scheme.
Also, on my local branch i have the changes i needed from your last commit
so this would actually build against master. However, if I do parallel builds
the build gets hung up. Single threaded builds are fine. I cannot tell why
yet. If I do a full clean build parallel just on master things are fine.
So, i believe there is something in the way these tests run that break
parallel builds
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