zlzhang0122 created FLINK-25068:
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Summary: 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
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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