clarify version removal restriction (#8825)

This commit is contained in:
Jordan Liggitt
2018-05-30 21:11:55 -04:00
committed by k8s-ci-robot
parent 9ffaaae850
commit 40e57e4c84
@@ -84,7 +84,10 @@ no less than:**
This covers the maximum supported version skew of 2 releases.
NOTE: Until [#52185](https://github.com/kubernetes/kubernetes/issues/52185) is
resolved, no API versions may be removed.
resolved, no API versions that have been persisted to storage may be removed.
Serving REST endpoints for those versions may be disabled (subject to the
deprecation timelines in this document), but the API server must remain capable
of decoding/converting previously persisted data from storage.
**Rule #4b: The "preferred" API version and the "storage version" for a given
group may not advance until after a release has been made that supports both the