Github user GJL commented on the issue:
https://github.com/apache/flink/pull/5584
test failures due to
```
// logback + log4j, with/out krb5, different JVM opts
// IMPORTANT: Be aware that we are using side effects here to modify the
created YarnClusterDescriptor,
// because we have a reference to the ClusterDescriptor's configuration
which we modify continuously
```---
