Hi folks, Surfacing the following to close out before the RC is cut.
*Blockers for the release:* - #16543 <https://github.com/apache/iceberg/pull/16543> - Build: Clean up shaded-jar LICENSE/NOTICE and add missing third-party notices. Follow-up to the LICENSE/NOTICE findings from the 1.11.0 RC4 vote. It has no approvals yet. IMO, we should not cut RC0 with this open. - #17552 <https://github.com/apache/iceberg/pull/17552> - Kafka Connect: coordinator only commits offsets when greater than existing offsets. When it merges it closes: #17551 <https://github.com/apache/iceberg/issues/17551> - data loss with default configs due to persistent zombie coordinators. - Related to the above Kafka Connect one #17340 <https://github.com/apache/iceberg/issues/17340>- duplicate data file commits after task restart - is a separate open issue on the milestone and still needs a fix *Decisions (needed before the RC0 cut):* - #17706 <https://github.com/apache/iceberg/pull/17706> - Remove writing of position delete files with row data (PDWR). Should this be in or out for 1.12.0. Please weigh in on the discussion thread: Dev List Thread for PDWR <https://lists.apache.org/thread/3tz63wok59hhqphswovvl9z0yrh0z7pl> *Correctness Fixes:* - #17669 <https://github.com/apache/iceberg/pull/17669> - Spark: Fix Z-order NPE on null booleans and case-insensitive column resolution - #17557 <https://github.com/apache/iceberg/pull/17557>- Core, Parquet: Fix null counting for parquet without null_count - #17431 <https://github.com/apache/iceberg/pull/17431> - Parquet: Guard ordered predicates on variant/nested types in metrics row group filter - #17320 <https://github.com/apache/iceberg/pull/17320> - Parquet: Fix nested initial default applied when ancestor struct is null. re the Flink Docs: Cheng, thanks for the note. Would you be able to put up a PR to update, we can iterate on it? I wouldn't put it as a blocker for now, but worth getting the docs in a good place. If folks could review and help these in, it would be helpful before the RC. Partnering with Amogh to do the artifact generation, etc. Full milestone: https://github.com/apache/iceberg/milestone/60 I would not add anything additional to the milestone unless it is a blocker / bug or license issue going forward from today (08/24/26) so our release timeline is met. As always, please reach out if you have questions. Thank you. On Thu, Aug 20, 2026 at 11:46 PM Cheng Pan <[email protected]> wrote: > Have a glance at the docs site, I found that the latest docs still have > many references to the old versions of engines (especially Flink, and Spark > looks better) that Iceberg has already removed support for. Just wondering > if someone familiar with Flink has a chance to update that. > > Thanks, > Cheng Pan > > > > On Aug 21, 2026, at 09:40, Manu Zhang <[email protected]> wrote: > > Hi all, > > For Spark 4.2.0 support, Szehon has a nice suggestion: merge the source > code while excluding it from release. In the latest commit, I've excluded > it from both binary and source tarballs, and I believe the PR is ready to > merge now (Thanks to all the reviewers!) > > Neelesh, > Can we also include #16028 <https://github.com/apache/iceberg/pull/16028>, > to mark overrides of deprecated Spark API as deprecated? It's also close to > merging. > > On Wed, Aug 19, 2026 at 1:27 AM Neelesh Salian <[email protected]> > wrote: > >> Hi, >> >> Thanks for the comments Anurag, Anton and Alex. >> >> re Hilbert Curve PR: It has been added and is on track for the release. >> re Spark 4.2: This makes sense. The PR does touch a large surface and I >> was hoping we could get a baseline 4.2 support in and add more things >> along. I've removed it from the milestone for 1.12. >> re the REST changes: Alex, I've included 17709 and 17627 onto the >> milestone. >> >> Thanks. >> >> On Tue, Aug 18, 2026 at 6:05 AM Alexandre Dutra <[email protected]> >> wrote: >> >>> Hi all, >>> >>> I'd like to request that #17709 be included in 1.12 as well. This PR >>> implements the REST spec changes related to remote signing >>> configuration, which were introduced by #16822. >>> >>> Without #17709, we would be shipping a spec change that is not >>> implemented in any language. >>> >>> Thanks, >>> Alex >>> >>> [16822]: https://github.com/apache/iceberg/pull/16822 >>> [17627]: https://github.com/apache/iceberg/pull/17627 >>> [17709]: https://github.com/apache/iceberg/pull/17709 >>> >>> On Tue, Aug 18, 2026 at 2:01 PM Anton Okolnychyi <[email protected]> >>> wrote: >>> > >>> > Btw, I would advise against shipping Spark 4.2 support. Each new Spark >>> release is a unique opportunity to address some tech debt because the DSv2 >>> APIs are evolving. 4.2 is no different. I'd suggest getting the module into >>> main to unblock development but skip it from the next Iceberg release. We >>> can do another Iceberg release when the Spark 4.2 integration matures. >>> > >>> > пн, 17 серп. 2026 р. о 21:58 Anurag Mantripragada < >>> [email protected]> пише: >>> >> >>> >> Hi Neelesh, >>> >> >>> >> Thanks for tracking these items. Would you mind including the Hilbert >>> Curve clustering PR in this release? It is already approved by Russell. It >>> will be a useful clustering strategy. >>> >> >>> >> ~ Anurag >>> >> >>> >> On Sun, Aug 16, 2026 at 6:56 PM Neelesh Salian < >>> [email protected]> wrote: >>> >>> >>> >>> Hi all, >>> >>> >>> >>> We are targeting a 1.12.0 RC on or shortly after Aug 26. The >>> following PRs are still open on the 1.12.0 milestone and need reviews to >>> make the release. >>> >>> If you own or can review any of these, please take a pass this week. >>> >>> >>> >>> Blockers (need to land before the RC is cut): >>> >>> >>> >>> #16543 Build: Clean up shaded-jar LICENSE/NOTICE and add missing >>> third-party notices >>> >>> #16449 All: Remove deprecated methods for 1.12.0 >>> >>> #17638 Core: Reduce visibility on scan planning response builder for >>> specsById and deleteFiles >>> >>> #17627 AWS: Remove deprecated class and require SIGNER_ENDPOINT >>> >>> >>> >>> Correctness (great to get these in): >>> >>> >>> >>> #17557 Core, Parquet: Fix null counting for parquet that doesn't >>> have null_count >>> >>> #15989 Core, REST: Fix path segment encoding to use RFC 3986 >>> percent-encoding >>> >>> >>> >>> Feature/enhancement candidates (in if ready, otherwise they can be >>> moved to 1.13): >>> >>> >>> >>> #14984 Spark: Add support for 4.2.0 >>> >>> #16750 Spark 4.1: Implement SupportsReportOrdering DSv2 API >>> >>> #16507 API, Core: Add exceptions for OAuth2 token endpoint errors >>> >>> #16305 Core, Spark 4.1: Add K-way merge rewrite strategy for >>> pre-sorted data files >>> >>> #17520 Data, Kafka Connect: Enable Parquet variant shredding for >>> Kafka Connect and generic Record writes >>> >>> >>> >>> Full milestone: https://github.com/apache/iceberg/milestone/60 >>> >>> If you have a feature(s), fix(es), or breaking change(s) that are >>> missed, please let me know so we can track them. >>> >>> >>> >>> Thank you for all the great work across the community. >>> >>> >>> >>> Thanks, >>> >>> Neelesh >>> >>> >>> >>> On Thu, Aug 13, 2026 at 2:27 AM Péter Váry < >>> [email protected]> wrote: >>> >>>> >>> >>>> Yeah, >>> >>>> I think we definitely want to decide and move forward with the >>> Flink version upgrade for the next Iceberg release. >>> >>>> >>> >>>> Felix Perez Diener via dev <[email protected]> ezt írta >>> (időpont: 2026. aug. 10., H, 15:47): >>> >>>>> >>> >>>>> Hello all, >>> >>>>> >>> >>>>> I see that support for Flink 2.3 was discussed for release in >>> Iceberg 1.12.0. Is that still the case? Would really love to have Flink 2.3 >>> supported, since at Stripe we have started upgrading to Flink 2.3, but >>> missing Iceberg support may make things difficult. >>> >>>>> >>> >>>>> Best, >>> >>>>> Felix >>> >>>>> >>> >>>>> On Mon, Aug 10, 2026 at 7:14 AM Maximilian Michels <[email protected]> >>> wrote: >>> >>>>>> >>> >>>>>> Thanks Neelesh for getting us started on the 1.12.0 release! >>> >>>>>> >>> >>>>>> -Max >>> >>>>>> >>> >>>>>> On Sat, Aug 8, 2026 at 7:14 PM Neelesh Salian < >>> [email protected]> wrote: >>> >>>>>> > >>> >>>>>> > Thanks, Alex. Looks like the PR was added to the milestone. >>> >>>>>> > >>> >>>>>> > Cheng, thank you for the note. I do agree that at some point >>> the default should move forward, but there are still gaps to be closed on >>> Variant as well as Geo types. >>> >>>>>> > I don't think that would happen within the timeline of 1.12. >>> >>>>>> > Let me look at the current state and see what is pending, as >>> well as improve the tracking. I'll start a separate thread for that effort. >>> >>>>>> > >>> >>>>>> > On Sat, Aug 8, 2026 at 8:19 AM Cheng Pan <[email protected]> >>> wrote: >>> >>>>>> >> >>> >>>>>> >> I assume the Iceberg Java already includes a full >>> implementation of the Table Spec V3 features. Does the community have plans >>> to switch the default table version from 2 to 3 for Iceberg tables created >>> by Spark in the next release? This would help drive the adoption of new >>> features such as Variant. >>> >>>>>> >> >>> >>>>>> >> Thanks, >>> >>>>>> >> Cheng Pan >>> >>>>>> >> >>> >>>>>> >> >>> >>>>>> >> >>> >>>>>> >> On Aug 6, 2026, at 16:18, Alexandre Dutra <[email protected]> >>> wrote: >>> >>>>>> >> >>> >>>>>> >> Hi Neelesh, >>> >>>>>> >> >>> >>>>>> >> If possible, I'd like to have this PR included: >>> >>>>>> >> >>> >>>>>> >> https://github.com/apache/iceberg/pull/15989 >>> >>>>>> >> >>> >>>>>> >> It's the fix for the path segment encoding issue in Iceberg >>> REST. The >>> >>>>>> >> PR got one review already but isn't approved yet. >>> >>>>>> >> >>> >>>>>> >> Thanks, >>> >>>>>> >> Alex >>> >>>>>> >> >>> >>>>>> >> On Wed, Aug 5, 2026 at 10:37 PM Oğuzhan Ünlü < >>> [email protected]> wrote: >>> >>>>>> >> >>> >>>>>> >> >>> >>>>>> >> Hi Neelesh, >>> >>>>>> >> >>> >>>>>> >> I'd like to get https://github.com/apache/iceberg/pull/16507 >>> included in the milestone if possible. I previously asked for a review but >>> didn't hear back. Not sure if that went to spam for some reason. >>> >>>>>> >> >>> >>>>>> >> Thanks, >>> >>>>>> >> Oguzhan >>> >>>>>> >> >>> >>>>>> >> On Wed, Aug 5, 2026 at 11:03 PM Neelesh Salian < >>> [email protected]> wrote: >>> >>>>>> >> >>> >>>>>> >> >>> >>>>>> >> Hi folks, >>> >>>>>> >> >>> >>>>>> >> As mentioned during the community sync this morning, the >>> release is on track. >>> >>>>>> >> A few updates: >>> >>>>>> >> >>> >>>>>> >> I plan to cut the branch / RC on or after August 26, 2026 >>> (after the community sync that morning). I'll be working with Amogh to help >>> with the branching + artifacts. >>> >>>>>> >> There are still active items needing reviews. Please take a >>> look at the 1.12.0 milestone. >>> >>>>>> >> Calling out the Spark 4.2.0 PR: >>> https://github.com/apache/iceberg/pull/14984 - it needs more eyes and >>> review time to make this release. >>> >>>>>> >> I'll keep watching for blockers and bugs that should be part >>> of the release and surface them as needed, including any forward-porting to >>> Spark 4.2. >>> >>>>>> >> >>> >>>>>> >> If you have a feature(s), fix(es), or breaking change(s) you >>> want considered for 1.12.0, please let me know. >>> >>>>>> >> >>> >>>>>> >> Thanks, >>> >>>>>> >> Neelesh >>> >>>>>> >> >>> >>>>>> >> On Fri, Jun 5, 2026 at 3:54 PM Steven Wu <[email protected]> >>> wrote: >>> >>>>>> >> >>> >>>>>> >> >>> >>>>>> >> If we develop good habit of regular releases, we normally >>> won't need to hold the release train to get things in (except for critical >>> security and correctness issues) as the next one is 2-3 months away. >>> >>>>>> >> >>> >>>>>> >> On Fri, Jun 5, 2026 at 3:42 PM Neelesh Salian < >>> [email protected]> wrote: >>> >>>>>> >> >>> >>>>>> >> >>> >>>>>> >> Hi folks, >>> >>>>>> >> >>> >>>>>> >> With 1.11.0 out the door, I want to open up the planning >>> around 1.12.0. >>> >>>>>> >> As Steven noted on the dev list (thread for 1.11), 1.11.0 took >>> roughly 8 months from 1.10.0. This is longer than the 3-4 month cadence we >>> have previously discussed. >>> >>>>>> >> For 1.12.0 I'd like us to aim closer to that target. >>> >>>>>> >> >>> >>>>>> >> I'll be acting as the release manager for this release. Here >>> are a few notes to kick things off: >>> >>>>>> >> >>> >>>>>> >> Tentative release target: late August / early September 2026 >>> (~3 months from 1.11.0). >>> >>>>>> >> Curation: We'll use the June 24 community sync as the formal >>> kickoff to surface in-flight work and call out anything that should land in >>> this release. >>> >>>>>> >> Cadence reminder: If something doesn't make it in 1.12, the >>> next one is ~3 months out (1.13). >>> >>>>>> >> Mid-cycle check-in: I'll send a state-of-the-release update >>> around mid-July with what is in, what is in-flight, and what remains a >>> blocker. >>> >>>>>> >> Tracking: The open issues and PRs targeting this release are >>> tagged with the Iceberg 1.12.0 milestone. I'll keep this milestone updated >>> as things land in the repo. >>> >>>>>> >> >>> >>>>>> >> If you have a feature, fix, or breaking change you want >>> considered for 1.12.0, please reply on this thread or flag it on the June >>> 24 sync. >>> >>>>>> >> >>> >>>>>> >> Thanks, >>> >>>>>> >> Neelesh >>> >>>>>> >> >>> >>>>>> >> >>> >> >
