Github user tzulitai commented on the issue:
https://github.com/apache/flink/pull/5393
@tweise ok, I think I can agree on your last comment.
> Should I add a (trivial) unit test that asserts that
isThisSubtaskShouldSubscribeTo applies modulus to assigner returned value that
falls outside the subtask index range?
That sounds good! Once we add that, I think we're good to go.---
