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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-8560) add KeyedProcessFunction to expose the key in onTimer() and other methods
Date Fri, 02 Mar 2018 05:10:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-8560?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16383180#comment-16383180
] 

ASF GitHub Bot commented on FLINK-8560:
---------------------------------------

Github user bowenli86 commented on the issue:

    https://github.com/apache/flink/pull/5481
  
    @kl0u I added the comments for `@deprecated` in the javadoc. Let me know if you can merge
the two related PRs. Thanks


> 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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