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https://issues.apache.org/jira/browse/SPARK-23670?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16605642#comment-16605642
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Michael Spector commented on SPARK-23670:
-----------------------------------------
The bug still happens in Apache Spark 2.3.1:
!heapdump_OOM.png|width=1595,height=966!
These char[] objects occupy 88% of driver memory.
> Memory leak of SparkPlanGraphWrapper in sparkUI
> -----------------------------------------------
>
> Key: SPARK-23670
> URL: https://issues.apache.org/jira/browse/SPARK-23670
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.3.0
> Reporter: Myroslav Lisniak
> Assignee: Myroslav Lisniak
> Priority: Major
> Fix For: 2.3.1, 2.4.0
>
> Attachments: heap.png, heapdump_OOM.png
>
>
> Memory leak on driver for a long time running application. We have
> application using structured streaming and running 48 hours. But driver fails
> with out of memory after 25 hours. After investigating heap dump we found
> that most of the memory was occupied with a lot of *SparkPlanGraphWrapper*
> objects inside *InMemoryStore*.
> Application was run with option:
> --driver-memory 4G
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