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https://issues.apache.org/jira/browse/FLINK-2419?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14645779#comment-14645779
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ASF GitHub Bot commented on FLINK-2419:
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Github user gyfora commented on the pull request:
https://github.com/apache/flink/pull/947#issuecomment-125894533
If you give a +1 @rmetzger I will merge this
> DataStream sinks lose key information
> -------------------------------------
>
> Key: FLINK-2419
> URL: https://issues.apache.org/jira/browse/FLINK-2419
> Project: Flink
> Issue Type: Bug
> Components: Streaming
> Reporter: Gyula Fora
> Assignee: Gyula Fora
> Priority: Blocker
> Fix For: 0.10
>
>
> If the user applies an addSink method after keyBy, the sink will not have the
> information of the key as the transform method is bypassed.
> This makes it impossible to use partitioned states with sinks.
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