[jira] [Commented] (SPARK-18236) Reduce memory usage of Spark UI and HistoryServer by reducing duplicate objects

["Apache Spark (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-18236?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15631147#comment-15631147 ] 

Apache Spark commented on SPARK-18236:
--------------------------------------

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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