Emre Kartoglu created FLINK-34025:
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Summary: Show data skew score on Flink Dashboard
Key: FLINK-34025
URL: https://issues.apache.org/jira/browse/FLINK-34025
Project: Flink
Issue Type: New Feature
Components: Runtime / Web Frontend
Affects Versions: 1.19.0
Reporter: Emre Kartoglu
Attachments: skew_proposal.png, skew_tab.png
*Problem:* Currently users have to click on every operator and check how much
data each subtask is processing to see if there is data skew. This is
particularly cumbersome and error-prone for jobs with big job graphs. Data skew
is an important metric that should be more visible.
*Proposed solution:*
* Show a data skew score on each operator (see screenshot below). This would
be an improvement, but would not be sufficient. As it would still not be easy
to see the data skew score for jobs with very large job graphs (it'd require a
lot of zooming in/out).
* Show data skew score for each operator under a new tab. See screenshot below
!skew_tab.png! .
!skew_proposal.png!
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