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https://issues.apache.org/jira/browse/FLINK-3427?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15468531#comment-15468531
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Robert Metzger commented on FLINK-3427:
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[~ivan.mushketyk] did you already start working on this issue? I'm asking
because I have somebody who wanted to implement this soon, and we have some
concrete plans how to do it.
If you're already half-way through with the implementation, you can get the
task and finish it. However, if you did not start yet, I'm wondering whether it
would be okay for you if I can take the task?
I'm sorry that I didn't see your comment three days ago earlier.
> Add watermark monitoring to JobManager web frontend
> ---------------------------------------------------
>
> Key: FLINK-3427
> URL: https://issues.apache.org/jira/browse/FLINK-3427
> Project: Flink
> Issue Type: Improvement
> Components: Streaming, Webfrontend
> Reporter: Robert Metzger
> Assignee: Ivan Mushketyk
>
> Currently, its quite hard to figure out issues with the watermarks.
> I think we can improve the situation by reporting the following information
> through the metrics system:
> - Report the current low watermark for each operator (this way, you can see
> if one operator is preventing the watermarks to rise)
> - Report the number of events arrived after the low watermark (users can see
> how accurate the watermarks are)
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