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Thanks for the information, really hope these two can get merged for Newton:
 https://review.openstack.org/#/c/240401/
 https://review.openstack.org/#/c/239869/

On Sat, May 21, 2016 at 5:55 AM, Jay Pipes <jaypipes at gmail.com> wrote:

> +1 on all your suggestions below, Sean.
>
> -jay
>
>
> On 05/20/2016 08:05 AM, Sean Dague wrote:
>
>> There are a number of changes up for spec reviews that add parameters to
>> LIST interfaces in Newton:
>>
>> * keypairs-pagination (MERGED) -
>>
>> https://github.com/openstack/nova-specs/blob/8d16fc11ee6d01b5a9fe1b8b7ab7fa6dff460e2a/specs/newton/approved/keypairs-pagination.rst#L2
>> * os-instances-actions - https://review.openstack.org/#/c/240401/
>> * hypervisors - https://review.openstack.org/#/c/240401/
>> * os-migrations - https://review.openstack.org/#/c/239869/
>>
>> I think that limit / marker is always a legit thing to add, and I almost
>> wish we just had a single spec which is "add limit / marker to the
>> following APIs in Newton"
>>
>> Most of these came in with sort_keys as well. We currently don't have
>> schema enforcement on sort_keys, so I don't think we should add any more
>> instances of it until we scrub it. Right now sort_keys is mostly a way
>> to generate a lot of database load because users can sort by things not
>> indexed in your DB. We really should close that issue in the future, but
>> I don't think we should make it any worse. I have -1s on
>> os-instance-actions and hypervisors for that reason.
>>
>> os-instances-actions and os-migrations are time based, so they are
>> proposing a changes-since. That seems logical and fine. Date seems like
>> the natural sort order for those anyway, so it's "almost" limit/marker,
>> except from end not the beginning. I think that in general changes-since
>> on any resource which is time based should be fine, as long as that
>> resource is going to natural sort by the time field in question.
>>
>> So... I almost feel like this should just be soft policy at this point:
>>
>> limit / marker - always ok
>> sort_* - no more until we have a way to scrub sort (and we fix weird
>> sort key issues we have)
>> changes-since - ok on any resource that will natural sort with the
>> updated time
>>
>>
>> That should make proposing these kinds of additions easier for folks,
>>
>>         -Sean
>>
>>
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