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https://issues.apache.org/jira/browse/YARN-3214?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14384136#comment-14384136
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Wangda Tan commented on YARN-3214:
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[~lohit],
I created and added some rough description for constraints at YARN-3409. I'm
working on a design doc for constraint, should be ready to review soon. We can
continue discuss it on YARN-3409.
Thanks,
> Add non-exclusive node labels
> ------------------------------
>
> Key: YARN-3214
> URL: https://issues.apache.org/jira/browse/YARN-3214
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: capacityscheduler, resourcemanager
> Reporter: Wangda Tan
> Assignee: Wangda Tan
> Attachments: Non-exclusive-Node-Partition-Design.pdf
>
>
> Currently node labels partition the cluster to some sub-clusters so resources
> cannot be shared between partitioned cluster.
> With the current implementation of node labels we cannot use the cluster
> optimally and the throughput of the cluster will suffer.
> We are proposing adding non-exclusive node labels:
> 1. Labeled apps get the preference on Labeled nodes
> 2. If there is no ask for labeled resources we can assign those nodes to non
> labeled apps
> 3. If there is any future ask for those resources , we will preempt the non
> labeled apps and give them back to labeled apps.
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