sxb created FLINK-20312:
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Summary: The documentation is incomplete
Key: FLINK-20312
URL: https://issues.apache.org/jira/browse/FLINK-20312
Project: Flink
Issue Type: Improvement
Components: Documentation
Affects Versions: 1.11.0
Reporter: sxb
In this
[document|https://github.com/apache/flink/blob/master/docs/dev/stream/operators/windows.md],
Under Triggers, TriggerResult's action is incomplete
The description of PURGE is missing after and，As follows.
1) The first three decide how to act on their invocation event by returning a
{{TriggerResult}}. The action can be one of the following:
* {{CONTINUE}}: do nothing,
* {{FIRE}}: trigger the computation,
* {{PURGE}}: clear the elements in the window, {color:#FF0000}and{color}
* {{FIRE_AND_PURGE}}: trigger the computation and clear the elements in the
window afterwards.
Description in the source code
/**
* All elements in the window are cleared and the window is discarded,
* without evaluating the window function or emitting any elements.
*/
PURGE(false, true);
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