[jira] [Created] (FLINK-4953) Allow querying time in window functions

[Shang Yuanchun (Jira)]

Manu Zhang created FLINK-4953:
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             Summary: Allow querying time in window functions
                 Key: FLINK-4953
                 URL: https://issues.apache.org/jira/browse/FLINK-4953
             Project: Flink
          Issue Type: Improvement
          Components: DataStream API
            Reporter: Manu Zhang


This is similar to FLINK-3674 but exposing time information in window functions. Currently when a timer is fired, all states in a window will be returned to users, including those after the timer. This change will allow users to filter out states after the timer based on time info.



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