Github user revans2 commented on the issue:
https://github.com/apache/storm/pull/2239
@HeartSaVioR the biggest issue with addressing this on the 1.x branch is
that the patch uses both a JDK8 specific feature (a default method in an
interface) and breaks backwards compatibility with other IPrincipalToLocal
plugins.
We could address this by having a static method that will create a
principal that wraps the user name instead and passes that into the original
PrincipalToLocal instance. But it is not a clean port.
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