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https://issues.apache.org/jira/browse/YARN-392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13663309#comment-13663309
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Sandy Ryza commented on YARN-392:
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bq. We mean to that level and beyond?
You're right. I'll update the javadoc to better reflect the code.
bq. It might help if we write the example in the javadoc by specifying how to
use the flag to enable strict node locality.
Agreed.
bq. My grey cells are not what they used to be Can you please help me grok the
logic following statement?
I'll add in some comments.
bq. You mean node2 right?
Right.
> Make it possible to specify hard locality constraints in resource requests
> --------------------------------------------------------------------------
>
> Key: YARN-392
> URL: https://issues.apache.org/jira/browse/YARN-392
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Bikas Saha
> Assignee: Sandy Ryza
> Attachments: YARN-392-1.patch, YARN-392-2.patch, YARN-392-2.patch,
> YARN-392-2.patch, YARN-392-3.patch, YARN-392-4.patch, YARN-392-5.patch,
> YARN-392-6.patch, YARN-392.patch
>
>
> Currently its not possible to specify scheduling requests for specific nodes
> and nowhere else. The RM automatically relaxes locality to rack and * and
> assigns non-specified machines to the app.
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