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[jira] [Created] (FLINK-10239) Register eventtime timer only once in eventtrigger


buptljy created FLINK-10239:
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             Summary: Register eventtime timer only once in eventtrigger
                 Key: FLINK-10239
                 URL: https://issues.apache.org/jira/browse/FLINK-10239
             Project: Flink
          Issue Type: Improvement
    Affects Versions: 1.5.3
            Reporter: buptljy


I find that we call ctx.registerEventTimeTimer(window.maxTimestamp()) every time when an element is received in the window. Even though it doesn't affect the result because it uses a Set, but I think it can still be an improvement if we call it only once.



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