This allows the scheduler to handle cluster events faster with less memory.
  
  Specific node events include updates to taints, tolerations or allocatable.
  In-tree plugins now ignore node updates that don't modify any of these fields. ([#127220](https://github.com/kubernetes/kubernetes/pull/127220), [@sanposhiho](https://github.com/sanposhiho)) [SIG Node, Scheduling and Storage]

* Return container command exit codes in kubectl run/exec ([#26541](https://github.com/kubernetes/kubernetes/pull/26541), [@sttts](https://github.com/sttts))
* Fix kubectl describe to display a container's resource limit env vars as node allocatable when the limits are not set ([#29849](https://github.com/kubernetes/kubernetes/pull/29849), [@aveshagarwal](https://github.com/aveshagarwal))