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https://issues.apache.org/jira/browse/FLINK-14470?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16955718#comment-16955718
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Jiayi Liao commented on FLINK-14470:
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[~thw][~vthinkxie] Actually I think we should check FLINK-14147 first and see
how much redundancy we can remove. For example, if we can only list like 4,000
vertices' watermark at most, then we should make watermark board blank,
otherwise the browse will become very slow even if we list them all.
> 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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