Github user joewitt commented on the issue:
https://github.com/apache/nifi/pull/2308
after running ($ mvn clean install -Dhadoop.version=2.8.2
-Dhadoop.guava.version=12.0.1 -Dhadoop.http.client.version=4.5.2
-Dhadoop.http.core.version=4.4.4 -Pcontrib-check
) command i see
httpclient-4.5.2.jar
httpcore-4.4.4.jar
okhttp-2.4.0.jar
And before it looks like it always did
Looks correct. +1 merging to master---
