Github user aljoscha commented on the issue:
https://github.com/apache/flink/pull/5901
By the way, the test still doesn't catch the bug that you're fixing
(https://issues.apache.org/jira/browse/FLINK-8286). I think we need proper
end-to-end tests that really test Flink-Kerberos integration on an actual YARN
cluster. I have started looking onto using Docker Compose for that, i.e.
bringing up a hadoop cluster in docker with Kerberos and then running Flink on
that as an end-to-end test.---
