creates an event-time trigger that fires once the watermark passes the end of the window . once the trigger fires all elements are discarded . elements that arrive late immediately trigger window evaluation with just this one element . concode_field_sep long serialVersionUID concode_field_sep TriggerResult onEventTime concode_elem_sep TriggerResult onElement concode_elem_sep TriggerResult onProcessingTime concode_elem_sep String toString
EventTimeTrigger function ( ) { return new EventTimeTrigger ( ) ; }