- Improved the efficiency of NodeAdded QueueingHint by registering UpdateNodeTaint event for plugins that have NodeAdded event but don't have UpdateNodeTaint event. This ensures better requeuing efficiency and prevents Pods from being stuck in the unschedulable pod pool.

        }
      }

      return false;
    }

    /**
     * Performs routine cleanup following a read. Normally cleanup happens during writes. If cleanup
     * is not observed after a sufficient number of reads, try cleaning up from the read thread.
     */
    void postReadCleanup() {
      if ((readCount.incrementAndGet() & DRAIN_THRESHOLD) == 0) {
        cleanUp();
      }
    }

- Alowed useful inclusion of `-args $prog_args` in KUBE_TEST_ARGS, when doing `make test-integration`. ([#107516](https://github.com/kubernetes/kubernetes/pull/107516), [@MikeSpreitzer](https://github.com/MikeSpreitzer))

        }
      }

      return false;
    }

    /**
     * Performs routine cleanup following a read. Normally cleanup happens during writes. If cleanup
     * is not observed after a sufficient number of reads, try cleaning up from the read thread.
     */
    void postReadCleanup() {
      if ((readCount.incrementAndGet() & DRAIN_THRESHOLD) == 0) {
        cleanUp();
      }
    }

  Program, it is Recipient's responsibility to acquire that license
  before distributing the Program.

  d) Each Contributor represents that to its knowledge it has
  sufficient copyright rights in its Contribution, if any, to grant
  the copyright license set forth in this Agreement.

  e) Notwithstanding the terms of any Secondary License, no

* Connections from Pods to Services with 0 endpoints will now ICMP reject immediately, rather than blackhole and timeout. ([#72534](https://github.com/kubernetes/kubernetes/pull/72534), [@thockin](https://github.com/thockin))
* Improve efficiency of preemption logic in clusters with many pending pods. ([#72895](https://github.com/kubernetes/kubernetes/pull/72895), [@bsalamat](https://github.com/bsalamat))

- Added new config option `delayCacheUntilActive` to `KubeSchedulerConfiguration` that can provide a tradeoff between memory efficiency and scheduling speed when their leadership is updated in `kube-scheduler` ([#115754](https://github.com/kubernetes/kubernetes/pull/115754), [@linxiulei](https://github.com/linxiulei)) [SIG API Machinery and Scheduling]

   ([#113629](https://github.com/kubernetes/kubernetes/pull/113629), [@andrewsykim](https://github.com/andrewsykim))
- 'The iptables kube-proxy backend now process service/endpoint changes
  more efficiently in very large clusters.' ([#110268](https://github.com/kubernetes/kubernetes/pull/110268), [@danwinship](https://github.com/danwinship))
- '`CSIMigrationvSphere` was upgraded to GA and locked to true. Do not upgrade to K8s

Node.  There is an open PR ([#48189](https://github.com/kubernetes/kubernetes/pull/48189)) to resolve this issue, but as this issue also exists in 1.6, and as we do not wish to risk release stability by merging it directly prior to a release without sufficient testing, we have decided to defer merging the PR until the next point release for each minor version ([#48190](https://github.com/kubernetes/kubernetes/pull/48190)).

* Protobuf serialization does not distinguish between `[]` and `null`....

callers to pass a `context.Context` as an argument. The context is used for timeout and cancellation signaling and to pass supplementary information to round trippers in the wrapped transport chain. If you don't need any of this functionality, it is sufficient to pass a context created with `context.Background()` to these functions. The `(*"k8s.io/client-go/rest".Request).Context` method is removed now that all methods that execute a request accept a context directly. ([#87597](https://github.com/kub...