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https://issues.apache.org/jira/browse/SPARK-26750?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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liupengcheng updated SPARK-26750:
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    Summary: Estimate memory overhead should taking multi-cores into account  
(was: Estimate memory overhead with multi-cores)

> Estimate memory overhead should taking multi-cores into account
> ---------------------------------------------------------------
>
>                 Key: SPARK-26750
>                 URL: https://issues.apache.org/jira/browse/SPARK-26750
>             Project: Spark
>          Issue Type: Improvement
>          Components: YARN
>    Affects Versions: 2.4.0
>            Reporter: liupengcheng
>            Priority: Major
>
> Currently, spark esitmate the memory overhead without taking multi-cores into 
> account, sometimes, it might cause direct memory oom, or killed by yarn for 
> exceeding requested physical memory. 
> I think the memory overhead is related to the executor's core number(mainly 
> the spark direct memory and some related jvm native memory, for instance, the 
> thread stacks, GC data etc.). so maybe we can improve this estimation by 
> taking the core number into account.



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