Thanks for the update.

I think Yufei's suggestion makes sense as well.

Do you want me to extend the Google Calendar invite?

Regards
JB

On Tue, May 19, 2026 at 5:13 PM Sung Yun <[email protected]> wrote:

> Hi Yufei,
>
> I think the suggestion makes sense.
>
> Just a reminder for everyone that the recurring Authorization Sync cadence
> has now ended on the Google Calendar. I think the syncs were very
> productive overall and helped us converge meaningfully on the broader
> authorization direction and SPI design tradeoffs. Thanks everyone for the
> thoughtful discussions and participation throughout the series.
>
> At this point, it feels like we are converging more concretely on the SPI
> shape directly in PR #4409 [1], so I’ll continue driving convergence and
> follow through on the remaining refactoring work there. And of course, if
> we feel there’s value in reviving the series in the future, we can always
> do so.
>
> Here are the Authorization Sync notes for reference [2].
>
> [1] https://github.com/apache/polaris/pull/4409
> [2]
> https://docs.google.com/document/d/1C_SSaZH1i83UUGXrnVBur1fR_FHKYWZ75ISFfcb3kns/edit?tab=t.0#heading=h.wodibvbtg7qj
>
> I think we can follow up
>
> On 2026/05/13 23:59:24 Yufei Gu wrote:
> > Hi Sung, Dmitri,
> >
> > After reviewing the PR, I'd push back on lifting PolarisPrincipal out of
> > AuthorizationRequest. (subject, action, resource) is the canonical tuple
> > for authorization, the principal is the "who" in "who did what on what"
> and
> > belongs with the operation and target as part of one authorization
> > question, not as a parallel argument threaded alongside.
> >
> > Batching feels like an internal concern of the request model, not a
> reason
> > to split principal out. The targeted shapes are really (action,
> resource).
> > They don't need to know about the subject. So I'd factor that into its
> own
> > interface and let AuthorizationRequest compose principal on top:
> >
> >   // (action, resource)
> >   public sealed interface AuthorizationIntent {
> >     PolarisAuthorizableOperation operation();
> >
> >     record Untargeted(PolarisAuthorizableOperation operation)
> >         implements AuthorizationIntent {}
> >
> >     record SingleTarget(PolarisAuthorizableOperation operation,
> > PolarisSecurable target)
> >         implements AuthorizationIntent {}
> >
> >     record PairwiseTarget(
> >         PolarisAuthorizableOperation operation,
> >         @Nullable PolarisSecurable target,
> >         @Nullable PolarisSecurable secondary)
> >         implements AuthorizationIntent {}
> >   }
> >
> >   // (subject, intents), single shape, batching is just N >= 1
> >   record AuthorizationRequest(
> >       PolarisPrincipal principal,
> >       List<AuthorizationIntent> intents) {}
> >
> > If a future flow ever needs mixed-principal batches, that's a new sealed
> > variant rather than an SPI signature change.
> >
> > I think it's worth getting this right before handlers migrate, since
> > walking the SPI shape back later is much harder than now. Curious what
> you
> > and others think.
> >
> > Yufei
> >
> >
> > On Wed, May 13, 2026 at 9:41 AM Yufei Gu <[email protected]> wrote:
> >
> > > Hi Sung,
> > >
> > > Thanks for moving this forward. I agree PR #4409 is the right place to
> > > continue the concrete interface-shape discussion.
> > >
> > > At a high level, I like the direction of making authorization request
> > > shapes more explicit and keeping batch authorization in mind. I will
> take a
> > > look at the PR.
> > >
> > > Yufei
> > >
> > > On Wed, 13 May 2026 10:09:42 -0400, Dmitri Bourlatchkov
> [email protected]
> > > wrote:
> > >
> > > Hi Sung,
> > >
> > > Thanks for pushing this work forward!
> > >
> > > I commented on PR 4409 in GH.
> > >
> > > In general I like the direction this PR is going. Still, I think some
> more
> > > fine-tuning would improve interface clarity (as commented in GH).
> > >
> > > Thanks,
> > > Dmitri.
> > >
> > > On Wed, May 13, 2026 at 8:46 AM Sung Yun [email protected] wrote:
> > >
> > > Hi Dmitri, Yufei,
> > >
> > > Thank you for keeping the discussion going on the other thread [1]. I’m
> > > following up here on the proposal to fold this into the new
> authorization
> > > SPI work.
> > >
> > > Based on feedback from the Polaris Community Authorization Sync on May
> 7
> > > [2], I put together a PR [3] that changes the shape of the new
> authorize
> > > SPI and AuthorizationRequest so the request model makes the
> authorization
> > > target shape more explicit inside PolarisAuthorizer.
> > >
> > > At a high level, the PR:
> > > - introduces batch authorize APIs that take List
> > > - removes PolarisPrincipal from AuthorizationRequest, so caller
> context is
> > > not duplicated across batch requests
> > > - reworks AuthorizationRequest into a sealed hierarchy with explicit
> > > request shapes:
> > > - SingleTargetAuthorizationRequest
> > > - PairwiseTargetAuthorizationRequest
> > > - TargetlessAuthorizationRequest
> > >
> > > This is an SPI-breaking proposal, but since the new SPI is not yet
> used by
> > > the main request flow, I believe this is still a safe point to make the
> > > change.
> > >
> > > I’d appreciate feedback on whether this request shape is a better fit
> for
> > > the new SPI, especially given the earlier concern that
> AuthorizationRequest
> > > should make resource shape more explicit.
> > >
> > > [1] https://lists.apache.org/thread/o5hntqfvfhn5z9t78480nplpypddg200
> > > [2]
> > >
> > >
> https://docs.google.com/document/d/1C_SSaZH1i83UUGXrnVBur1fR_FHKYWZ75ISFfcb3kns/edit?tab=t.0#heading=h.wodibvbtg7qj
> > > [3] https://github.com/apache/polaris/pull/4409
> > >
> > > On 2026/04/06 20:23:11 Yufei Gu wrote:
> > >
> > > Given that, let’s keep them separate. See you guys tomorrow.
> > >
> > > Yufei
> > >
> > > On Mon, Apr 6, 2026 at 11:43 AM Dmitri Bourlatchkov [email protected]
> > > wrote:
> > >
> > > Hi All,
> > >
> > > I may not be available for the entire Community Sprint time slot
> > > tomorrow.
> > > I’d personally prefer to keep the old Authorization meeting time and
> > > video
> > > call format.
> > >
> > > Cheers,
> > > Dmitiri.
> > >
> > > On Mon, Apr 6, 2026 at 2:05 PM Sung Yun [email protected] wrote:
> > >
> > > Hi Yufei,
> > >
> > > That’s a good suggestion - I’m open to merging them. That said,
> > > since we
> > > already have a dedicated and well-established sync for
> > > Authorization, it
> > > might be better to use the Community Sprint for other topics and help
> > > create structure around those discussions.
> > >
> > > I’m fine either way. Happy to align with what works best for the
> > > group.
> > >
> > > Sung
> > >
> > > On 2026/04/06 17:59:32 Yufei Gu wrote:
> > >
> > > Hi folks,
> > >
> > > We have a Polaris Community Spring tomorrow afternoon. Can we
> > > merge the
> > > morning’s Polaris Authorizer Sync Meeting into the Sprint?
> > >
> > > Yufei
> > >
> > > On Tue, Mar 24, 2026 at 11:30 AM Dmitri Bourlatchkov <
> > > [email protected]
> > >
> > > wrote:
> > >
> > > Hi Sung,
> > >
> > > Thanks for driving this call! I think today’s session was very
> > > useful
> > > and
> > > productive.
> > >
> > > Just to sync up with everyone: I believe we will continue
> > > working on
> > > code
> > > refactorings (SPI PRs) between those community calls and discuss
> > > specific code-level issues via email or GH comments.
> > >
> > > Cheers,
> > > Dmitri.
> > >
> > > On Mon, Mar 23, 2026 at 8:23 AM Sung Yun [email protected]
> > > wrote:
> > >
> > > Thanks a lot JB!
> > >
> > > Confirming that I’m able to see the new recurring sync on my
> > > Google
> > > calendar.
> > >
> > > I’m looking forward to syncing up with everyone tomorrow at
> > > 1pm ET
> > > /
> > > 10am
> > > PT.
> > >
> > > Cheers,
> > > Sung
> > >
> > > On 2026/03/23 09:55:47 Jean-Baptiste Onofré wrote:
> > >
> > > The invite has been sent. Anyone member of the Polaris Google
> > > Group
> > > will
> > > receive it.
> > >
> > > Here’s the invite details:
> > >
> > > Polaris Authorizer Sync Meeting
> > > 10am PT
> > > Video call link: https://meet.google.com/hyj-fcdm-ydx
> > >
> > > NB: I’m creating a Calendar that will create a PR to share
> > > on the
> > > website.
> > >
> > > Regards
> > > JB
> > >
> > > On Mon, Mar 23, 2026 at 10:51 AM Jean-Baptiste Onofré <
> > > [email protected]
> > >
> > > wrote:
> > >
> > > Hi Sung,
> > >
> > > I propose moving the sync to 10:00 AM PT (starting March
> > > 24th)
> > > to
> > > avoid a
> > > conflict with the Iceberg meeting.
> > >
> > > I am sending the calendar invitation now.
> > >
> > > Regards,
> > > JB
> > >
> > > On Sat, Mar 21, 2026 at 12:52 AM Sung Yun [email protected]
> > > wrote:
> > >
> > > Hi JB, that’ll be fantastic.
> > >
> > > It looks like we have enough members interested in
> > > joining the
> > > sync.
> > >
> > > Could I ask for your help in adding a meeting to the
> > > Polaris
> > > Agenda
> > > group
> > > [1], for Tuesdays at 12:00 PM ET (9:00 AM PT), starting
> > > March
> > > 24th?
> > >
> > > Thanks a lot JB. And here’s the Google Doc [2] I created
> > > where
> > > we
> > > can
> > > keep track of the discussion topics for the sync as well.
> > >
> > > Looking forward to discussing auth with everyone.
> > >
> > > Sung
> > >
> > > [1]
> > > https://groups.google.com/u/1/g/polaris-community-sync
> > > [2]
> > >
> > >
> > >
> https://docs.google.com/document/d/1C_SSaZH1i83UUGXrnVBur1fR_FHKYWZ75ISFfcb3kns/edit?tab=t.0
> > >
> > > On 2026/03/20 14:15:40 Jean-Baptiste Onofré wrote:
> > >
> > > Hi
> > >
> > > As discussed together, I think it’s a great idea.
> > >
> > > I’m happy to add a meeting (recorded) on the Polaris
> > > agenda
> > > (Google
> > > Group).
> > >
> > > On a related topic, I will create a PR to add a Calendar
> > > with
> > > all
> > > our
> > > meetings on our website.
> > >
> > > Regards
> > > JB
> > >
> > > On Thu, Mar 19, 2026 at 7:30 PM Sung Yun <
> > > [email protected]
> > >
> > > wrote:
> > >
> > > Hi folks,
> > >
> > > Following the discussion in the Polaris community
> > > sync, it
> > > seems
> > > like
> > > we
> > > could benefit from a dedicated forum to work through
> > > the
> > > PolarisAuthorizer
> > > SPI and related questions.
> > >
> > > Some topics we can start with include:
> > >
> > >    - Decoupling Polaris resolution and privilege from
> > >    Polaris
> > >    authorization
> > >    - Mixed-mode authorization (continuing to use native
> > >    principals
> > >    and
> > >    grants
> > >    after decoupling)
> > >    - Contract with external authorizers for Polaris
> > >    (e.g.,
> > >    PolarisAuthorizableOperation, PolarisEntityType)
> > >    - Incorporating additional authorization context
> > >
> > > I’d like to propose a fortnightly authorization sync
> > > to
> > > drive
> > > these
> > > topics
> > > forward.
> > >
> > > I’m thinking Tuesdays at 12:00 PM ET (9:00 AM PT),
> > > starting
> > > March
> > > 25
> > > (the
> > > second sequence will be April 7th, and on). I’m happy
> > > to
> > > send
> > > out
> > > a
> > > calendar invite if there is general support in the
> > > community on
> > > the
> > > idea.
> > >
> > > Cheers,
> > >
> > > Sung
> > >
> > >
> >
>

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