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https://issues.apache.org/jira/browse/YARN-382?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zhijie Shen updated YARN-382:
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Attachment: YARN-382_2.patch
Make patch against the latest trunk, and add the comment suggested by Bikas.
> SchedulerUtils improve way normalizeRequest sets the resource capabilities
> --------------------------------------------------------------------------
>
> Key: YARN-382
> URL: https://issues.apache.org/jira/browse/YARN-382
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: scheduler
> Affects Versions: 2.0.3-alpha
> Reporter: Thomas Graves
> Assignee: Zhijie Shen
> Attachments: YARN-382_1.patch, YARN-382_2.patch, YARN-382_demo.patch
>
>
> In YARN-370, we changed it from setting the capability to directly setting
> memory and cores:
> - ask.setCapability(normalized);
> + ask.getCapability().setMemory(normalized.getMemory());
> + ask.getCapability().setVirtualCores(normalized.getVirtualCores());
> We did this because it is directly setting the values in the original
> resource object passed in when the AM gets allocated and without it the AM
> doesn't get the resource normalized correctly in the submission context. See
> YARN-370 for more details.
> I think we should find a better way of doing this long term, one so we don't
> have to keep adding things there when new resources are added, two because
> its a bit confusing as to what its doing and prone to someone accidentally
> breaking it in the future again. Something closer to what Arun suggested in
> YARN-370 would be better but we need to make sure all the places work and get
> some more testing on it before putting it in.
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