Wangda Tan created YARN-3214:
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Summary: Adding 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
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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