Github user basvank commented on the issue:
https://github.com/apache/nifi/pull/1037
@pvillard31 @mattyb149 thanks for the information, that didn't become clear
from this PR.
It seems to be possible to implement in an ASF-friendly way using
https://github.com/daveclayton/json-schema-validator (ASL 2.0), which depends
on https://github.com/FasterXML/jackson-core (Apache 2.0) instead of json.org.
I will see if I can find the time to do this myself, but if not it can
serve as a pointer for others.
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