While investigating knative/pkg#1509 we stumbled upon problem that DryRun validation of podspecs is not really working at scale, since we're overwhelming the RateLimiter in the k8s API client that is used to invoke dry run.

Right now we moved it again to be disabled by default, but it is possible we can investigate the avenues to avoid unnecessary dry runs.
E.g. avoid them when pod-spec hasn't changed in updates or completely ignore when the only update is status update.

In what area(s)?

/area API

/assign @whaught