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Window[12:00,12:10) UTC has values2 at 12:00 and 5 at 12:09. A value 7 at 12:10 belongs to the next interval. An accepted late value 4 occurred12:03. What is the revised first-window sum, how is it published, and what does a watermark not prove?
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What extra state is needed if late events can merge sessions?
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