Github user alopresto commented on the pull request:
https://github.com/apache/nifi/pull/253#issuecomment-194465114
@lordjc if we are confident the result of
`UserGroupInformation.isSecurityEnabled()` does not change between class
instantiation and `customValidate()` execution, I am ok with this PR as is.
Thanks for the contribution.
_Note:_ there are test failures on Travis CI for
`java.lang.OutOfMemoryError: GC overhead limit exceeded` and test runner max
time exceeded. These may just be Travis issues; does the full build with tests
run successfully on your local system?
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