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From Elias Levy <fearsome.lucid...@gmail.com>
Subject WindowedStream sum behavior
Date Sat, 09 Apr 2016 01:18:44 GMT
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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