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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