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https://issues.apache.org/jira/browse/SPARK-23516?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean R. Owen resolved SPARK-23516.
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Resolution: Won't Fix
> I think it is unnecessary to transfer unroll memory to storage memory
> ----------------------------------------------------------------------
>
> Key: SPARK-23516
> URL: https://issues.apache.org/jira/browse/SPARK-23516
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Affects Versions: 3.0.0
> Reporter: liuxian
> Priority: Minor
>
> Now _StaticMemoryManager_ mode has been removed.
> And for _UnifiedMemoryManager_, unroll memory is also storage memory, so I
> think it is unnecessary to release unroll memory really, and then to get
> storage memory again.
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