They are different classes because the signature of their apply method is different. If one were the subclass, it would be possible to call apply with the wrong signature.
Hi all,
I have question about the differences between WindowedStream and AllWindowedStream. From the definition I see that WindowedStream are partitioned based on key but for AllWindowedStream this is not the case.
So, what comes to my mind is, why WindowedStream is not the special case of AllWindowedStream? or why those classes are completely separated, and not extending from one another?
Radu
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