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https://issues.apache.org/jira/browse/FLINK-25068?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17450510#comment-17450510
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Till Rohrmann commented on FLINK-25068:
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I think this is a good improvement. We might actually also want to expose on a
per operator basis because individual operators can have different max
parallelism values.
> Show the maximum parallelism (number of key groups) of a job in Web UI
> ----------------------------------------------------------------------
>
> Key: FLINK-25068
> URL: https://issues.apache.org/jira/browse/FLINK-25068
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / Web Frontend
> Affects Versions: 1.14.0
> Reporter: zlzhang0122
> Priority: Major
>
> Now, Flink use maximum parallelism as the number of key groups to distribute
> the key, the maximum parallelism can be set manually, or flink will set-up
> automatically, sometimes the value is useful and we may want to know it,
> maybe we can expose in the Web UI.
> By doing this, we can easily know the max parallelism we can suggest the user
> to scale when they are facing the leak of through-output, and we can know
> which subtask will processing the special value and we can find the log soon.
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