[YARN-3214] Add non-exclusive node labels

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Done
• Component/s: capacityscheduler, resourcemanager
• Target Version/s: 2.8.0
• Assignee: Wangda Tan
• Reporter: Wangda Tan
• Created: 18/Feb/15 22:47
• Updated: 27/Apr/15 18:03
• Resolved: 27/Apr/15 18:03

Description

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.

Issue Links

• contains: YARN-3345 Add non-exclusive node label API to RMAdmin protocol and NodeLabelsManager