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https://issues.apache.org/jira/browse/FLINK-1950?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14514215#comment-14514215
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Stephan Ewen commented on FLINK-1950:
-------------------------------------

20% and 30% are both rather random magic numbers. Is there a better way to do 
this?

> Increase default heap cutoff ratio from 20% to 30% and move default value to 
> ConfigConstants
> --------------------------------------------------------------------------------------------
>
>                 Key: FLINK-1950
>                 URL: https://issues.apache.org/jira/browse/FLINK-1950
>             Project: Flink
>          Issue Type: Task
>          Components: YARN Client
>    Affects Versions: 0.9
>            Reporter: Robert Metzger
>            Priority: Blocker
>
> It seems that too many production users are facing issues with YARN killing 
> containers due to resource overusage.
> We can mitigate the issue by using only 70% of the specified memory for the 
> heap.



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