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https://issues.apache.org/jira/browse/YARN-7936?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16436110#comment-16436110
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Billie Rinaldi commented on YARN-7936:
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I kicked off a new precommit build since this patch has been up for a while.
The patch looks fine to me, so I'll commit it if the build is clean.
> Add default service AM Xmx
> --------------------------
>
> Key: YARN-7936
> URL: https://issues.apache.org/jira/browse/YARN-7936
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Jian He
> Assignee: Jian He
> Priority: Major
> Attachments: YARN-7936.1.patch
>
>
> We were seeing issues in the Service AM where memory usage would go beyond
> 1gb and AM container would get killed due to pmem check. We were not setting
> Xmx explicitly and hence it was getting defaulted to 32gb (based on the java
> version we were using and the available memory in the host). Hence even minor
> GC cycles were not kicking in and taking the usage beyond 1gb.
> We need to default Xmx to a reasonable value, ofcourse allowing it to be
> overridden by the service owner.
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