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https://issues.apache.org/jira/browse/SPARK-18236?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Josh Rosen resolved SPARK-18236.
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Resolution: Fixed
Fix Version/s: 2.2.0
Merged into master (2.2.0).
> Reduce memory usage of Spark UI and HistoryServer by reducing duplicate
> objects
> -------------------------------------------------------------------------------
>
> Key: SPARK-18236
> URL: https://issues.apache.org/jira/browse/SPARK-18236
> Project: Spark
> Issue Type: Improvement
> Components: Web UI
> Reporter: Josh Rosen
> Assignee: Josh Rosen
> Fix For: 2.2.0
>
>
> When profiling heap dumps from the Spark History Server and live Spark web
> UIs, I found a tremendous amount of memory being wasted on duplicate objects
> and strings. A few small changes can cut per-task UI memory by half or more.
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