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From 张万新 <>
Subject Will an input event older than watermark be dropped?
Date Wed, 06 Sep 2017 12:31:16 GMT

I'm investigating the watermark for some time, according to the guide, if
we specify a watermark on event time column, the watermark will be used to
drop old state data. Then, take window-based count for example, if an event
whose time is older than the watermark comes, it will be simply dropped, or
a new count result be calculated for corresponding window?

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