[jira] [Created] (FLINK-21806) ContinuousEventTimeTrigger should register its first timer base on current watermark

[Shang Yuanchun (Jira)]

Kezhu Wang created FLINK-21806:
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             Summary: ContinuousEventTimeTrigger should register its first timer base on current watermark
                 Key: FLINK-21806
                 URL: https://issues.apache.org/jira/browse/FLINK-21806
             Project: Flink
          Issue Type: Improvement
          Components: API / DataStream
    Affects Versions: 1.13.0
            Reporter: Kezhu Wang


Currently, the first timer is registered base on timestamp of first element. But that that could be relative large in window. In case of {{maxTimestamp}}, then {{ContinuousEventTimeTrigger}} will never fire early.

Due to compatibility, we might not able to change current behavior. How about an option in construction ?



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