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https://issues.apache.org/jira/browse/FLINK-8667?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16379074#comment-16379074
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ASF GitHub Bot commented on FLINK-8667:
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Github user bowenli86 commented on the issue:
https://github.com/apache/flink/pull/5500
@tillrohrmann @kl0u Thanks for reviewing, guys
As @pnowojski mentioned, we three decided to expose timer keys in
`ProcessFunction` in [FLINK-8560](https://github.com/apache/flink/pull/5481).
Exposing timer keys in `KeyedBroadcastProcessFunction` extends that design. I
think we should get this PR into 1.5.0 so we don't need to do the [complicated
refactoring for FLINK-8560](https://github.com/apache/flink/pull/5481) to
support backward compatibility
> expose key in KeyedBroadcastProcessFunction#onTimer()
> -----------------------------------------------------
>
> Key: FLINK-8667
> URL: https://issues.apache.org/jira/browse/FLINK-8667
> Project: Flink
> Issue Type: Improvement
> Affects Versions: 1.5.0
> Reporter: Bowen Li
> Assignee: Bowen Li
> Priority: Major
> Fix For: 1.5.0
>
>
> [~aljoscha] [~pnowojski]
> Since KeyedBroadcastProcessFunction is about to get out of the door, I think
> it will be great to expose the timer's key in KeyedBroadcastProcessFunction
> too. If we don't do it now, it will be much more difficult to add the feature
> on later because of user app compatibility issue.
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