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https://issues.apache.org/jira/browse/SPARK-55773?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kent Yao resolved SPARK-55773.
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Fix Version/s: 4.2.0
Resolution: Fixed
Issue resolved by pull request 54574
[https://github.com/apache/spark/pull/54574]
> Replace custom collapse/toggle system with Bootstrap 5 Collapse API
> -------------------------------------------------------------------
>
> Key: SPARK-55773
> URL: https://issues.apache.org/jira/browse/SPARK-55773
> Project: Spark
> Issue Type: Sub-task
> Components: Web UI
> Affects Versions: 4.2.0
> Reporter: Kent Yao
> Assignee: Kent Yao
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.2.0
>
>
> The Spark Web UI has 40+ manual collapse implementations in webui.js using
> collapseTable(), toggleClass('collapsed'), and custom localStorage logic for
> state persistence.
> Bootstrap 5's native Collapse API (data-bs-toggle="collapse", data-bs-target)
> handles all of this with zero JavaScript. This would:
> - Remove ~100 lines of custom JS in webui.js (lines 32-55, 108-162)
> - Eliminate manual arrow state management (.arrow-open, .arrow-closed)
> - Simplify collapse usage across EnvironmentPage, JobPage, AllJobsPage,
> StoragePage, ExecutionPage
> - Use BS5's built-in aria-expanded for accessibility
> Part of SPARK-55760 (Spark Web UI Modernization)
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