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https://issues.apache.org/jira/browse/YARN-919?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13710315#comment-13710315
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Hitesh Shah commented on YARN-919:
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[~mayank_bansal] I was actually recommending replacing <default/recommended
settings> with some actual values based on the default 1GB heap size and
recommended jvm settings such as heap dump on out of memory.
If just for documentation, a simpler approach documenting just the variable
names and the format the values need to be specified in would suffice.
> Setting default heap sizes in yarn env
> --------------------------------------
>
> Key: YARN-919
> URL: https://issues.apache.org/jira/browse/YARN-919
> Project: Hadoop YARN
> Issue Type: Bug
> Affects Versions: 2.1.0-beta
> Reporter: Mayank Bansal
> Assignee: Mayank Bansal
> Priority: Minor
> Attachments: YARN-919-trunk-1.patch, YARN-919-trunk-2.patch
>
>
> Right now there are no defaults in yarn env scripts for resource manager nad
> node manager and if user wants to override that, then user has to go to
> documentation and find the variables and change the script.
> There is no straight forward way to change it in script. Just updating the
> variables with defaults.
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