[YUNIKORN-23] nodes can be added to the scheduler but not removed

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.8
• Component/s: shim - kubernetes
• Target Version: 0.8
• Assignee: Weiwei Yang
• Reporter: Wilfred Spiegelenburg
• Created: 04/Mar/20 12:10
• Updated: 19/Mar/20 01:35
• Resolved: 16/Mar/20 20:46

Description

In the core scheduler the nodes are added when the shim tells it to add a new node. If the node is made unschedulable (cordon node) that state is passed on and the core is updated (apache/incubator-yunikorn-core#57)
The core can also decommission a node however the shim currently does not support sending a decommission to the core. That needs to be added based on the state of the cluster and the nodes on the k8s side:
https://kubernetes.io/docs/concepts/architecture/nodes/