Github user vijikarthi commented on the issue: https://github.com/apache/flink/pull/2275 > YARNSessionFIFOSecuredITCase gives me the following: 17:49:58,097 INFO SecurityLogger.org.apache.hadoop.ipc.Server - Auth successful for appattempt_1471880990715_0001_000001 (auth:SIMPLE) It is not using Kerberos it seems. We should check that security is really enabled and fail the test if not. @mxm I am not sure why the log statements from IPC layers are using auth:SIMPLE but I have verified the same messages (NM/RM logs) on a running HDP (secure) cluster too. I would imagine this is the default implementation and we can ignore those messages. However, while investigating this issue, I have found an interesting problem with YarnMiniCluster. The containers created does not have the Yarn Configuration that we pass through the test code. The KRB5 file is also not visible and hence the UGI/security context that we create was missing proper Hadoop configurations. I have fixed the issue and patched it. I have also disabled the RollingSinkSecure IT test case since secure MiniFS cluster requires privileged ports. We can enable the test case when the patch (HDFS-9213) is made in to main stream. Please take a look and let me know if you can deploy and run the code.
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