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https://issues.apache.org/jira/browse/FLINK-9868?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16546171#comment-16546171
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Kostas Kloudas commented on FLINK-9868:
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Thanks [~yanghua] for the quick reply. You are right!
Maybe [~hequn8128] has more information about the issue.
> Expose channel id to ProcessFunction
> ------------------------------------
>
> Key: FLINK-9868
> URL: https://issues.apache.org/jira/browse/FLINK-9868
> Project: Flink
> Issue Type: New Feature
> Components: Local Runtime
> Reporter: Hequn Cheng
> Assignee: vinoyang
> Priority: Major
>
> Currently, channel id has not been exposed from {{StreamInputProcessor}} to
> the {{ProcessOperator}} and {{ProcessFunction}}. There are some cases that
> users want the channel id, as discovered [here(mailing
> list)|http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/Parallelism-and-keyed-streams-td21501.html].
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