Github user sbouchex commented on the issue:
https://github.com/apache/nifi/pull/2276
OK, the problem is not in the REST API which does contain the right value :
`"runStatus":"Running"`
However, the problem is in the generated code from swagger.io (or in Nifi)
: In ProcessorStatusSnapshotDTO, the RunStatusEnum values are defined uppercase
(RUNNING, STOPPED...) but the value sent returned by Nifi REST API are not :
Running, Stopped...---
