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From Aljoscha Krettek <aljos...@apache.org>
Subject Re: WindowedStream sum behavior
Date Sat, 09 Apr 2016 05:39:29 GMT
there no guarantees for the fields other than the summed field (and
eventual key fields). I think in practice it's either the fields from the
first or last record but I wouldn't rely on that.


On Sat, 9 Apr 2016 at 03:19 Elias Levy <fearsome.lucidity@gmail.com> wrote:

> I am wondering about the expected behavior of the sum method.  Obviously
> it sums a specific field in a tuple or POJO. But what should one expect in
> other fields?  Does sum keep the first field, last field or there aren't
> any guarantees?

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