[YUNIKORN-458] Retrieve app taskGroups from pod spec

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.10
• Component/s: shim - kubernetes
• Labels: pull-request-available
• Assignee: TingYao Huang
• Reporter: Weiwei Yang
• Created: 17/Nov/20 05:29
• Updated: 05/Sep/23 16:34
• Resolved: 20/Nov/20 23:34

Description

YUNIKORN-439 has added the utility function to retrieve taskGroups from pod annotation.
This task needs to leverage that function to get taskGroups while creating pkg/cache/application object. For normal apps, we directly retrieve the taskGroups info from the first pod seen by the scheduler.

Similarly, we need to parse the `taskGroupName` for each task (from the pod), and add that to pkg/cache/task object.

There are a few assumptions

1. If there are multiple pods in one app. The 1st pod must have the taskGroups defined, or all the pods should have same taskGroups definition.
2. If there are multiple task groups defined, different pods that belong to different groups need to set “yunikorn.apache.org/taskGroupName” accordingly.

We need to modify amprotocol.go#ApplicationMetadata and TaskMetadata in order to pass those info to the cache.

Issue Links

• links to: GitHub Pull Request #206