YuniKorn Concepts

Internal

• YuniKorn

YuniKorn Core

YuniKorn Core Concepts

Kuberentes Implementation

• A namespace can have a "queue" if annotated with "yunikorn.apache.org/queue". A namespace can have a "parent queue" is annotated with "yunikorn.apache.org/parentqueue".
• An allocation can be in one of two states ("Pending" and "In-Progress"). A pending allocation is one which has been decided upon by YuniKorn but has not yet been communicated to the default scheduler via PreFilter()/Filter(). Once PreFilter()/Filter() pass, the allocation transitions to "In-Progress" to signify that the default scheduler is responsible for fulfilling the allocation. Once PostBind() is called in the plugin to signify completion of the allocation, it is removed.

Node

Can a node be declared to be part of a partition with the "si/node-partition" label? It seems that the node Attributes partially come from the node labels.

In the Kubernetes implementation, the node is first added, then updated.

As part of handling the RMNodeUpdateEvent, RMProxy calls callback.UdpateNode().

Context

yunikorn-k8shim cache.Context

Policy Group

Set in the scheduler when a new resource manager is registered.