Github user kl0u commented on the issue:
https://github.com/apache/flink/pull/2939
I think your argument is valid. This is how I had it before, but I changed
it because it becomes too verbose, given that the `ListState.get()` just gives
you an Iterable that you have to iterate over and put its elements in a list in
order to check its size. But I think that it is worth doing it.
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