Release arrow-rs / parquet Minor version `59.1.0` (June 2026)

[alamb]

Let's keep the code flowing. Part of

• [EPIC] A collection of release tickets #7392

Release Checklist:

• Verify with downstream DataFusion tests: chore: Update to arrow/parquet 59.1.0 datafusion#23312
• Release notes and bump version: Prepare for 59.1.0 release #10274
• Release Candidate + Vote thread: https://lists.apache.org/thread/2vpxdt6n7kzo72sxpr7q8yyby4495gnk
• Release to crates.io / approval:
• Create follow on tickets

Required items for release

• None yet

Requested items for release

• Implement From<i128> for i256 #10081 from @AdamGS
• Upgrade object_store crate #10212 from @brancz
• arrow-cast: Add optimized path for unnesting a dict #10248 from @brancz
• https://github.com/apache/arrow-rs/pull/10271/changes

[AdamGS]

Would love to get #10081 in, I think adding a From impl is within a semver minor release. Happy to help with any other work that's needed here.

[alamb]

Would love to get #10081 in, I think adding a From impl is within a semver minor release. Happy to help with any other work that's needed here.

Added to the list above.

[alamb]

I double checked -- #10081 will be in the next minor release, eta later this month.
Though I can basically make a release at any time and release what we have already

[brancz]

We would appreciate if these could make it into 59.1.0:

• arrow-cast: Add ability to cast plain struct to dictionary #10039
• fix(arrow-schema): allow empty metadata value for UUID extension type #10001
• feat[arrow-ord]: suppport REE comparisons #9621
• perf[arrow-select]: add specialized REE interleave #9856
• Implement native interleave for ListView #9558

[alamb]

We would appreciate if these could make it into 59.1.0:

They are all merged and we plan to release from main, so I think they are all set

[brancz]

Can't wait! Once released, we will be on an upstream version of arrow-rs for the first time in >2 years instead of a fork carrying our patches!

[brancz]

#10212 would also be appreciated!

[alamb]

#10212 would also be appreciated!

Since I think object_store appears in the public API, we can't update object store to a new major version unless we bump the parquet major version 🤔

Maybe it is time to remove the object_store specific code from the parquet crate (and make it a separate crate 🤔 )

[alamb]

I am feeling I would like to organize a release later this week

[brancz]

If not too late, I would really appreciate if #10248 could land

[alamb]

I have a PR for version bump and release notes

• Prepare for 59.1.0 release #10274

I hope to have the release content finished up tomorrow and get an RC out for voting