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https://issues.apache.org/jira/browse/FLINK-10327?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16617421#comment-16617421
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Piotr Nowojski commented on FLINK-10327:
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I would be also in favour of *won't fixing* but maybe others have a different
opinion?
> Pass processWatermark calls from (Co)ProcessOperator to (Co)ProcessFunction
> ---------------------------------------------------------------------------
>
> Key: FLINK-10327
> URL: https://issues.apache.org/jira/browse/FLINK-10327
> Project: Flink
> Issue Type: New Feature
> Components: Streaming
> Reporter: Piotr Nowojski
> Assignee: Piotr Nowojski
> Priority: Major
> Labels: pull-request-available
>
> Currently {{CoProcessFunction}} can not react to changes watermark
> advancement. By passing {{processWatermark}} calls to function we would give
> a way to perform some actions on watermark advancement, like state clean up
> or emitting some results after accumulating some data.
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