Github user jerryshao commented on the issue: https://github.com/apache/spark/pull/17625 @jsoltren thanks to bring up this very old PR. By looking at the UI you pasted here, I'm wondering what is the usage of `Completed Stages` here, what's difference here compared to `Stages` tab? Also I think it would be better to to add a new Metrics Source about Netty memory usage, that would be useful.
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