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https://issues.apache.org/jira/browse/FLINK-14470?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16955708#comment-16955708
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Jark Wu commented on FLINK-14470:
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Hi [~vthinkxie], I assigned this issue to you.
> Watermark display not working with high parallelism job
> -------------------------------------------------------
>
> Key: FLINK-14470
> URL: https://issues.apache.org/jira/browse/FLINK-14470
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Web Frontend
> Affects Versions: 1.8.2, 1.9.1
> Reporter: Thomas Weise
> Assignee: Yadong Xie
> Priority: Major
>
> Watermarks don't display in the UI when the job graph has many vertices. The
> REST API call to fetch currentInputWatermark fails as it enumerates each
> subtask, which obviously fails beyond a limit. With the new UI that can be
> noticed through a flickering error message in the upper right corner.
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