Hi Chen, The API guideline came from this Nova's implementation. 501 case is not exception of microversion bumping[1] on Nova's rule now, so I feeling we need a new microversion if changing the 501 response to the other on *current rule*. However, such microversion seems a little overkill for me. So I'm not sure when we can change these 501 code. Thanks Ken Ohmichi --- [1]: http://docs.openstack.org/developer/nova/api_microversion_dev.html#when-do-i-need-a-new-microversion 2016-01-30 4:20 GMT+09:00 Chen CH Ji <jichenjc at cn.ibm.com>: > In reading some API guide line doc [1] seems we should not return 501 to > client > but nova still doing so at API layer [2], any discussion before about this > can be referred ? > > [1]https://github.com/openstack/api-wg/blob/master/guidelines/http.rst#use-of-501---not-implemented > [2]https://github.com/openstack/nova/blob/master/nova/api/openstack/common.py#L536 > > > __________________________________________________________________________ > OpenStack Development Mailing List (not for usage questions) > Unsubscribe: OpenStack-dev-request at lists.openstack.org?subject:unsubscribe > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev >