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https://issues.apache.org/jira/browse/SPARK-36603?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17406081#comment-17406081
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Apache Spark commented on SPARK-36603:
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User 'srowen' has created a pull request for this issue:
https://github.com/apache/spark/pull/33859
> Use WeakReference over SoftReference in LevelDB to avoid retaining iterator
> refs
> --------------------------------------------------------------------------------
>
> Key: SPARK-36603
> URL: https://issues.apache.org/jira/browse/SPARK-36603
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 3.1.2
> Reporter: Sean R. Owen
> Assignee: Sean R. Owen
> Priority: Minor
>
> See discussion at
> https://github.com/apache/spark/pull/28769#issuecomment-906722390
> The SoftReference used to track iterators in LevelDB can prevent them from
> being GCed early enough, thus finalized and closed. A WeakReference would be
> more readily collected, and solves an apparent actual issue running a 3.1.x
> SHS.
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