Ngone51 commented on issue #27849: [SPARK-31081][UI][SQL] Make the display of stageId/stageAttemptId/taskId of sql metrics configurable in UI URL: https://github.com/apache/spark/pull/27849#issuecomment-598507962 > This entire ui is for debugging purposes so I don't get your argument with that. If a user isn't actively looking to see what went on with their job why would they go to this UI at all. I agree that UI is mostly for debugging purposes. But please also note that this is living UI(rather than SHS UI). And living UI may shutdown at any time before user figure out the root cause (except those long running applications). So, personally, I aways need to restart and insert `Thread.sleep` when I need to debug on living UI in case it shutdown before I figure out the root cause. So, I think user could always turn on `spark.sql.ui.displayTaskInfoForMaxMetric` when they realize they need to restart and debug on living UI. And if they really want to see those ids at any time, they can just turn it on always. Or if we can have better way to display ids, then we can turn it on by default. And here's my previous propose to display ids in case you would like it: <img width="595" alt="ids" src="https://user-images.githubusercontent.com/16397174/76581609-f3a75a00-650e-11ea-89de-2edb947fc17d.png";> > I really hope in the future with all the things being reverted that I see we copy the original authors and reviewers. Sorry, this is my bad. I'll take care in the future.
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