Github user pepov commented on the issue:
https://github.com/apache/nifi/pull/2970
Some unit tests are failing according to the travis build that are relevant:
```
[ERROR]
testOnConfiguredWhenInitialAdminAndLegacyUsersProvided(org.apache.nifi.authorization.FileAccessPolicyProviderTest)
Time elapsed: 0.114 s <<< ERROR!
java.lang.Exception: Unexpected exception,
expected<org.apache.nifi.authorization.exception.AuthorizerCreationException>
but was<java.lang.NullPointerException>
at
org.apache.nifi.authorization.FileAccessPolicyProviderTest.testOnConfiguredWhenInitialAdminAndLegacyUsersProvided(FileAccessPolicyProviderTest.java:523)
[ERROR]
testOnConfiguredWhenBadLegacyUsersFileProvided(org.apache.nifi.authorization.FileAccessPolicyProviderTest)
Time elapsed: 0.036 s <<< ERROR!
java.lang.Exception: Unexpected exception,
expected<org.apache.nifi.authorization.exception.AuthorizerCreationException>
but was<java.lang.NullPointerException>
at
org.apache.nifi.authorization.FileAccessPolicyProviderTest.testOnConfiguredWhenBadLegacyUsersFileProvided(FileAccessPolicyProviderTest.java:509)
```
https://api.travis-ci.org/v3/job/422545351/log.txt
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