* Switch JSON marshal/unmarshal to json-iterator library.  Performance should be close to previous with no generated code. ([#48287](https://github.com/kubernetes/kubernetes/pull/48287), [@thockin](https://github.com/thockin))

### Other (Cleanup or Flake)

* kube-proxy handling of services with no endpoints now applies to both INPUT and OUTPUT chains, preventing socket leak. ([#43972](https://github.com/kubernetes/kubernetes/pull/43972), [@thockin](https://github.com/thockin))
* Fix kube-apiserver crash when patching TPR data ([#44612](https://github.com/kubernetes/kubernetes/pull/44612), [@nikhita](https://github.com/nikhita))

* Created k8s.gcr.io image repo alias to pull images from the closest regional repo. Replaces gcr.io/google_containers. ([#57824](https://github.com/kubernetes/kubernetes/pull/57824), [@thockin](https://github.com/thockin))

	g()
}
</pre>

<p>
it can happen that <code>g</code> prints <code>2</code> and then <code>0</code>.
</p>

<p>
This fact invalidates a few common idioms.
</p>

<p>
Double-checked locking is an attempt to avoid the overhead of synchronization.
For example, the <code>twoprint</code> program might be
incorrectly written as:
</p>

<pre>
var a string
var done bool

func setup() {

for # # bucket [true|false] # versioning: false # # set objectlocking for # # bucket [true|false] NOTE: versioning is enabled by default if you use locking # objectlocking: false # - name: bucket2 # policy: none # purge: false # versioning: true # # set objectlocking for # # bucket [true|false] NOTE: versioning is enabled by default if you use locking # objectlocking: false ## Additional Annotations for the Kubernetes Job makeBucketJob makeBucketJob: podAnnotations: annotations: securityContext: enabled:...

- A small regression in Service updates was fixed. The circumstances are so unlikely that probably nobody would ever hit it. ([#104601](https://github.com/kubernetes/kubernetes/pull/104601), [@thockin](https://github.com/thockin))

      return "Ordering.arbitrary()";
    }

    /*
     * We need to be able to mock identityHashCode() calls for tests, because it
     * can take 1-10 seconds to find colliding objects. Mocking frameworks that
     * can do magic to mock static method calls still can't do so for a system
     * class, so we need the indirection. In production, Hotspot should still

for # # bucket [true|false] # versioning: false # # set objectlocking for # # bucket [true|false] NOTE: versioning is enabled by default if you use locking # objectlocking: false # - name: bucket2 # policy: none # purge: false # versioning: true # # set objectlocking for # # bucket [true|false] NOTE: versioning is enabled by default if you use locking # objectlocking: false ## Additional Annotations for the Kubernetes Job makeBucketJob makeBucketJob: securityContext: enabled: false runAsUser: 1000...

for # # bucket [true|false] # versioning: false # # set objectlocking for # # bucket [true|false] NOTE: versioning is enabled by default if you use locking # objectlocking: false # - name: bucket2 # policy: none # purge: false # versioning: true # # set objectlocking for # # bucket [true|false] NOTE: versioning is enabled by default if you use locking # objectlocking: false ## Additional Annotations for the Kubernetes Job makeBucketJob makeBucketJob: securityContext: enabled: false runAsUser: 1000...