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https://issues.apache.org/jira/browse/SPARK-18236?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15631147#comment-15631147
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Apache Spark commented on SPARK-18236:
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User 'JoshRosen' has created a pull request for this issue:
https://github.com/apache/spark/pull/15743
> 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
>
> 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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