[YUNIKORN-95] YuniKorn does not emit FailedScheduling event to k8s if pod uses non-existing PVC

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 0.8
• Component/s: shim - yarn
• Labels: pull-request-available
• Assignee: Adam Antal
• Reporter: Adam Antal
• Created: 16/Apr/20 14:52
• Updated: 21/Jan/22 21:46
• Resolved: 16/Apr/20 20:56

Description

If a pod uses a non-existing PVC, the default-scheduler emit the following event to Kubernetes:

Events:
  Type     Reason            Age   From               Message
  ----     ------            ----  ----               -------
  Warning  FailedScheduling  45s   default-scheduler  persistentvolumeclaim "ebs-claim-auto" not found

YuniKorn does not emit such event, we only know what has happened by checking the logs:

2020-04-10T00:09:06.620Z	DEBUG	cache/task.go:404	checking PVC	{"name": "non-existing-pvc"}
2020-04-10T00:09:06.620Z	DEBUG	cache/application.go:277	task is not ready for scheduling	{"appID": "pod-with-non-existing-pvc", "taskID": "5c3961d1-7abf-11ea-b27d-02ea8179ac42", "error": "persistentvolumeclaim \"non-existing-pvc\" not found"}

Issue Links

• links to: GitHub Pull Request #105