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From Aljoscha Krettek <aljos...@apache.org>
Subject Re: Strange behaviour of windows
Date Tue, 08 Dec 2015 11:30:41 GMT
Hi,
an important concept of the Flink API is that transformations do not modify the original stream
(or dataset) but return a new stream with the modifications in place. In your example the
result of the extractTimestamps() call should be used for further processing. I attached your
source code with the required modifications.

Other than that, I think you understood the watermarks quite well. :D

Let us know if you need more information.

Cheers,
Aljoscha

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