ASF GitHub Bot commented on FLINK-8560:

Github user asfgit closed the pull request at:


> add KeyedProcessFunction to expose the key in onTimer() and other methods
> -------------------------------------------------------------------------
>                 Key: FLINK-8560
>                 URL: https://issues.apache.org/jira/browse/FLINK-8560
>             Project: Flink
>          Issue Type: Improvement
>          Components: DataStream API
>    Affects Versions: 1.4.0
>            Reporter: J├╝rgen Thomann
>            Assignee: Bowen Li
>            Priority: Major
>             Fix For: 1.5.0
> Currently it is required to store the key of a keyBy() in the processElement 
> method to have access to it in the OnTimerContext.
> This is not so good as you have to check in the processElement method for 
> every element if the key is already stored and set it if it's not already set.
> A possible solution would adding OnTimerContext#getCurrentKey() or a similar 
> method. Maybe having it in the open() method could maybe work as well.
> http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/Getting-Key-from-keyBy-in-ProcessFunction-tt18126.html

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