[jira] [Created] (FLINK-1773) Add interface for grouped policies to broadcast information to other groups

[Shang Yuanchun (Jira)]

Gyula Fora created FLINK-1773:
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             Summary: Add interface for grouped policies to broadcast information to other groups
                 Key: FLINK-1773
                 URL: https://issues.apache.org/jira/browse/FLINK-1773
             Project: Flink
          Issue Type: New Feature
            Reporter: Gyula Fora
            Priority: Minor


The current windowing does not allow grouped policies to broadcast information to each other. Adding this would allow closing windows earlier than the next element arrives for the same group. This makes nice use cases possible like detecting user sessions on data streams.



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