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https://issues.apache.org/jira/browse/YARN-9259?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16757518#comment-16757518
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BELUGA BEHR commented on YARN-9259:
-----------------------------------
This goes hand-in-hand with another proposed Idea: [MAPREDUCE-7180]. If the AM
fails with a memory error, it should be relaunched with a larger container (and
therefore a larger JVM heap size).
> Assign ApplicationMaster (AM) Heap Memory Based on Container Size
> -----------------------------------------------------------------
>
> Key: YARN-9259
> URL: https://issues.apache.org/jira/browse/YARN-9259
> Project: Hadoop YARN
> Issue Type: Improvement
> Reporter: BELUGA BEHR
> Priority: Major
>
> [YARN-7936] introduced a sane default value for the ApplicationMaster (AM)
> Java heap size. However, [MAPREDUCE-5785] added a feature that sets the Java
> Heap size of the Mapper/Reducer to be 80% (configurable, of course) of the
> YARN container size.
> Please add similar logic for MR ApplicationMaster. If the size of the AM
> container is increased, the JVM heap size should be too automatically.
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