Github user aljoscha commented on a diff in the pull request:
https://github.com/apache/flink/pull/3191#discussion_r97827610
--- Diff: docs/dev/windows.md ---
@@ -622,133 +690,138 @@ input
</div>
</div>
-## Dealing with Late Data
+## Triggers
-When working with event-time windowing it can happen that elements arrive
late, i.e the
-watermark that Flink uses to keep track of the progress of event-time is
already past the
-end timestamp of a window to which an element belongs. Please
-see [event time](./event_time.html) and especially
-[late elements](./event_time.html#late-elements) for a more thorough
discussion of
-how Flink deals with event time.
+A `Trigger` determines when a window (as formed by the `WindowAssigner`)
is ready to be
--- End diff --
Maybe have `*window assigner*` here because we also have `*window
function*`.
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