Github user thenatog commented on the issue:
https://github.com/apache/nifi/pull/3102
+1
Reviewed the code changes. Most of the changes were related to tests. The
needClientAuth attribute is not used all that much in actual code. Tested
InvokeHTTP with trust/keystores set up, site-to-site and secure clustering.
Also tested insecure site-to-site and clustering. Tested using flow registry.---
