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As with hopping windows, sliding windows will emit partial results as windows are updated, so any window that gets a new aggregate or an updated aggregate will emit. Any window with the value set to the initializer will not be emitted, such as empty windows created by a new in-order record. This feature can be suppressed through suppression, which allows users to ignore all results except for the final one, only emitting after the grace period has passed. In the future, suppress can be updated to emit results for windows that are still within the grace period but whose start and end points are both earlier than stream time. 

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