* Completed pods should not be hidden when requested by name via `kubectl get`. ([#42216](https://github.com/kubernetes/kubernetes/pull/42216), [@smarterclayton](https://github.com/smarterclayton))
  * Improve formatting of EventSource in kubectl get and kubectl describe ([#40073](https://github.com/kubernetes/kubernetes/pull/40073), [@matthyx](https://github.com/matthyx))

        return true;
      }
    }
    throw new AssertionError();
  }

  /*
   * If n <= millerRabinBases[i][0], then testing n against bases millerRabinBases[i][1..] suffices
   * to prove its primality. Values from miller-rabin.appspot.com.
   *
   * NOTE: We could get slightly better bases that would be treated as unsigned, but benchmarks
   * showed negligible performance improvements.
   */

- Improve handling of unmount failures when device may be in-use by another container/process ([#107789](https://github.com/kubernetes/kubernetes/pull/107789), [@gnufied](https://github.com/gnufied)) [SIG Storage]

- A new feature was enabled to improve the performance of the iptables mode of `kube-proxy` in large clusters. No action was required, however:
  

    public int hashCode() {
      // Warning: this is broken if size() == 0, so it is critical that we
      // substitute an empty ImmutableSet to the user in place of this

      // It's a weird formula, but tests prove it works.
      int adjust = size() - 1;
      for (int i = 0; i < axes.size(); i++) {
        adjust *= 31;
        adjust = ~~adjust;
        // in GWT, we have to deal with integer overflow carefully
      }

    }
  }

  /*
   * Preconditions.checkNotNull is *intended* for performing eager null checks on parameters that a
   * nullness checker can already "prove" are non-null. That means that the first parameter to
   * checkNotNull *should* be annotated to require it to be non-null.
   *
   * However, for a variety of reasons, Google developers have written a ton of code over the past

### Bug or Regression

- Cluster-bootstrap: improve the security of the functions responsible for generation and validation of bootstrap tokens ([#120400](https://github.com/kubernetes/kubernetes/pull/120400), [@neolit123](https://github.com/neolit123)) [SIG Cluster Lifecycle and Security]

and began to repeat it, but her voice sounded hoarse and
strange, and the words did not come the same as they used to do:--

            `How doth the little crocodile
              Improve his shining tail,
            And pour the waters of the Nile
              On every golden scale!

            `How cheerfully he seems to grin,
              How neatly spread his claws,

- kubeadm will now not fail preflight checks when running on >= 5.0 Linux kernel ([#74355](https://github.com/kubernetes/kubernetes/pull/74355), [@brb](https://github.com/brb))
- Scheduler cache snapshot algorithm has been optimized to improve scheduling throughput. ([#74041](https://github.com/kubernetes/kubernetes/pull/74041), [@bsalamat](https://github.com/bsalamat))

- A new `DisableCompression` field (default = `false`) has been added to kubeconfig under cluster info. When set to `true`, clients using the kubeconfig opt out of response compression for all requests to the apiserver. This can help improve list call latencies significantly when client-server network bandwidth is ample (>30MB/s) or if the server is CPU-constrained. ([#112309](https://github.com/kubernetes/kubernetes/pull/112309), [@shyamjvs](https://github.com/shyamjvs))