### Apps

- Fix a bug that pods not be deleted from unmatched nodes by daemon controller ([#78974](https://github.com/kubernetes/kubernetes/pull/78974), [@DaiHao](https://github.com/DaiHao))

incorrect. If watching objects with a filter, when an update was made that no longer matched the filter a DELETE event was correctly sent. However, the object that was returned by that delete was not the (correct) version before the update, but instead, the newer version. That meant the new object was not matched by the filter. This was a regression from behavior between cached watches on the server side and uncached watches, and thus broke downstream API clients. ([#46223](https://github.com/kuber...

incorrect.  If watching objects with a filter, when an update was made that no longer matched the filter a DELETE event was correctly sent.  However, the object that was returned by that delete was not the (correct) version before the update, but instead, the newer version.  That meant the new object was not matched by the filter.  This was a regression from behavior between cached watches on the server side and uncached watches, and thus broke downstream API clients. ([#46223](https://github.com/kub...

- Kube-scheduler now retries scheduling Pods rejected by the PodTopologySpread plugin when related Pods are created, deleted, updated,...

In Kubernetes 1.18, there are two significant additions to Ingress: A new `pathType` field and a new `IngressClass` resource. The `pathType` field allows specifying how paths should be matched. In addition to the default `ImplementationSpecific` type, there are new `Exact` and `Prefix` path types. 

- Allowed specifying `ExternalTrafficPolicy` for `Services` with `ExternalIPs`. ([#119150](https://github.com/kubernetes/kubernetes/pull/119150), [@tnqn](https://github.com/tnqn))
- Changed kubelet logs from `error` to `info` for uncached partitions when using CRI stats provider. ([#100448](https://github.com/kubernetes/kubernetes/pull/100448), [@saschagrunert](https://github.com/saschagrunert))

- The "value" part in the `wait --for=jsonpath='{expression}'[=value]` is now
  optional. If the value is not provided i.e., the command looks like `wait --for=jsonpath='{expression}'`
  then the wait condition is interpreted as matched when the expression returns
  *any* single JSON value like object or a literal. ([#118160](https://github.com/kubernetes/kubernetes/pull/118160), [@minherz](https://github.com/minherz))

Similarly, type inference uses the fact that a type argument must
<a href="#Satisfying_a_type_constraint">satisfy</a> the constraint of its respective
type parameter.
</p>

<p>
Each such pair of matched types corresponds to a <i>type equation</i> containing
one or multiple type parameters, from one or possibly multiple generic functions.
Inferring the missing type arguments means solving the resulting set of type