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https://issues.apache.org/jira/browse/YARN-2495?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14382496#comment-14382496
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Jian Fang commented on YARN-2495:
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On each EC2 instance, the metadata about that instance such as its market type,
i.e., spot or on-demand, CPUs, memory and etc are available when the instance
starts up. All these information are injected to yarn-site.xml by our instance
controller and they will not be changed afterwards. Different instances in an
EMR cluster could have different static lables since one EMR hadoop consists of
multiple instance groups, i.e., different types of instances.
I think it is ok that no duplicated data are sent to RM if not NM lable changes.
Thanks.
> Allow admin specify labels from each NM (Distributed configuration)
> -------------------------------------------------------------------
>
> Key: YARN-2495
> URL: https://issues.apache.org/jira/browse/YARN-2495
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: resourcemanager
> Reporter: Wangda Tan
> Assignee: Naganarasimha G R
> Attachments: YARN-2495.20141023-1.patch, YARN-2495.20141024-1.patch,
> YARN-2495.20141030-1.patch, YARN-2495.20141031-1.patch,
> YARN-2495.20141119-1.patch, YARN-2495.20141126-1.patch,
> YARN-2495.20141204-1.patch, YARN-2495.20141208-1.patch,
> YARN-2495.20150305-1.patch, YARN-2495.20150309-1.patch,
> YARN-2495.20150318-1.patch, YARN-2495.20150320-1.patch,
> YARN-2495.20150321-1.patch, YARN-2495.20150324-1.patch,
> YARN-2495_20141022.1.patch
>
>
> Target of this JIRA is to allow admin specify labels in each NM, this covers
> - User can set labels in each NM (by setting yarn-site.xml (YARN-2923) or
> using script suggested by [~aw] (YARN-2729) )
> - NM will send labels to RM via ResourceTracker API
> - RM will set labels in NodeLabelManager when NM register/update labels
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