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Stream API, 2.Trigger - Coggle Diagram
Stream API
window
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Session window - idle time gap , if active, it will merge
Global window with trigger - Window by key, need to have some condition to trigger the end of the window
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- Window Function
(reduce, fold, aggregate)
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Watermark - When the window is triggered after xx, the watermark is exactly that window event time triggered
Related to Lateelement
By default, it is dropped
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2.Trigger
TriggerResult onEle, onEvent, on Process
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