[jira] [Created] (FLINK-4749) Remove redundant processing time timers and futures in the window operator

[Shang Yuanchun (Jira)]

Stephan Ewen created FLINK-4749:
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             Summary: Remove redundant processing time timers and futures in the window operator
                 Key: FLINK-4749
                 URL: https://issues.apache.org/jira/browse/FLINK-4749
             Project: Flink
          Issue Type: Sub-task
          Components: Streaming
    Affects Versions: 1.2.0
            Reporter: Stephan Ewen
            Assignee: Stephan Ewen
             Fix For: 1.2.0


The window operator maintains redundant sets of processing time timers and futures, which make cleanup of processing time timers hard and inefficient.



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