Github user mxm commented on the issue:
https://github.com/apache/flink/pull/2275
Thanks for testing this on an actual secure cluster.
Hmpf, only allowing to bind to privileged ports doesn't really improve
security but we have to deal with this limitation somehow. I was initially
thinking we could just include a custom version of the `MiniKDC` dependency in
the Flink code. As you pointed out, this is not possible because the problem
lies in the `SecureDataNodeStarter` which returns the secure resources. This
class is part of `hadoop-hdfs`which we can't include a custom version because
it depends on the Hadoop version provided during build time.
Once the patch is out, we can run this test in a special profile where we
set the Hadoop version which supports non-privileged ports. As of now, I don't
see a feasible solution other than skipping this test.
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