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https://issues.apache.org/jira/browse/SPARK-53966?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dongjoon Hyun updated SPARK-53966:
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Parent: SPARK-51166
Issue Type: Sub-task (was: Improvement)
> Add utility functions to detect JVM GCs
> ---------------------------------------
>
> Key: SPARK-53966
> URL: https://issues.apache.org/jira/browse/SPARK-53966
> Project: Spark
> Issue Type: Sub-task
> Components: Spark Core
> Affects Versions: 4.1.0
> Reporter: Wan Kun
> Assignee: Wan Kun
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.1.0
>
>
> Both G1GC and ZGC needs extra object header (usually 16 bytes in 64bit
> system) when allocating region or ZPage for java long array, so the really
> bytes allocated is pageSize+16.
> So we need consider the object header when allocating spark pages.
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