Github user bbende commented on the issue:
https://github.com/apache/nifi/pull/2582
Will review this soon...
@MikeThomsen I think the intent here is to move master to use Hadoop 3.0.0
dependencies (3.1.0 is even out now)... If anyone needs to continue using the
Hadoop 2.x dependencies then they can take the NARs from the previous release
and add them in. For example, if 1.7.0 moves to 3.0.0, someone can take the
nifi-hadoop-nar and nifi-hadoop-libraries-nar from 1.6.0 and drop them into
1.7.0.
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