Jürgen Thomann created FLINK-8560:
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Summary: Access to the current key in ProcessFunction after keyBy()
Key: FLINK-8560
URL: https://issues.apache.org/jira/browse/FLINK-8560
Project: Flink
Issue Type: Wish
Components: DataStream API
Reporter: Jürgen Thomann
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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