jasonli-db opened a new pull request, #42459:
URL: https://github.com/apache/spark/pull/42459
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### What changes were proposed in this pull request?
Add a displayOrder variable to WebUITab to specify the order in which tabs
appear. Currently, the tabs are ordered by when they get attached, which isn't
always desired. The default is MIN_VALUE, meaning if it's not specified, it
will appear in the order added before any tabs with a non-default displayOrder.
### Why are the changes needed?
These changes allow control over the order which tabs appear in the UI.
Currently, the tabs are ordered by when they get attached, but this doesn't
always match the desired order. For example, we would like to have the SQL Tab
appear before the Connect tab; however, based on the code flow, the Connect tab
will be attached first and with the current logic, that tab would also appear
first.
### Does this PR introduce _any_ user-facing change?
Yes, minor user-facing change affecting the order in which tabs appear in
the Spark UI
### How was this patch tested?
Manually tested
Before:
<img width="1696" alt="Screenshot 2023-08-10 at 3 54 26 PM"
src="https://github.com/apache/spark/assets/65624911/a04ac6a9-c845-4a13-8780-ffe85de15285";>
After:
<img width="1679" alt="Screenshot 2023-08-10 at 3 54 42 PM"
src="https://github.com/apache/spark/assets/65624911/fb332f73-5e3e-4b03-adfc-15402db01197";>
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