Release arrow-rs / parquet Minor version `59.2.0` (July 2026)

[alamb]

Let's keep the code flowing. Part of

• [EPIC] A collection of release tickets #7392

Release Checklist:

• Verify with downstream DataFusion tests: WIP: Update to arrow/parquet 59.2.0 datafusion#24030
• Release notes and bump version: Update version to 59.2.0, update changelog generation to git-cliff #10451
• Release Candidate + Vote thread: https://lists.apache.org/thread/1yk644rldvcbgnh32kcnt6thwg31qw3b
• Release to crates.io / approval:
• Create follow on tickets

Required items for release

• None yet

Requested items for release

• feat(coalesce): add size function #10331 - from @rluvaton
• Soundness: Out-of-bounds read in MutableBuffer::push via misbehaving ToByteSlice #10252 from @alamb
• parquet: deprecate explicit object_store integration #10354 from @brancz

[rluvaton]

Would really love to include the following PR so I can fix a bug in datafusion for unaccounted memory

• feat(coalesce): add size function #10331

[brancz]

Would really appreciate if we could get #10354 in (and I can quickly follow up with the avro counterpart once we settle on the approach).

[alamb]

Would really appreciate if we could get #10354 in (and I can quickly follow up with the avro counterpart once we settle on the approach).

Thanks -- I will try and review it

[alamb]

I plan to make a RC later this week (shooting to start voting Friday Jul 31 or Saturday Aug 1

I am traveling this week so I won't have a huge amount of time to review stuff, but I should have some.

[alamb]

Will try and use this new script from @Jefffrey for the release

• Update version to 59.2.0, update changelog generation to git-cliff #10451

[alamb]

I think we are looking pretty good for a release candidate on Thursday. Anything else that we want to get in before I make the release?

[alamb]

Update:

I merged the two PRs that deprecated object_store integration (#10308) from @brancz 🙏

• parquet: deprecate explicit object_store integration #10354
• arrow-avro: Deprecate object_store integration #10484

I have two comment/documentation follow ups that would be nice, but not necessary, to get in:

• chore(parquet): add link to ticket in object_store deprecation message #10502
• chore(avro): add link to ticket in object_store deprecation message #10503

Release wise, I hijacked @Jefffrey 's PR to use git-cliff to also actually bump the version and the CHANGELOG

• Release notes and bump version: Update version to 59.2.0, update changelog generation to git-cliff #10451

I am currently testing

• Verify with downstream DataFusion tests: WIP: Update to arrow/parquet 59.2.0 datafusion#24030

[alamb]

🤔 I am testing downstream with DataFuson

• WIP: Update to arrow/parquet 59.2.0 datafusion#24030

There appears to be some errors

• https://github.com/alamb/datafusion/actions/runs/30643722834/job/91201627268
• https://github.com/alamb/datafusion/actions/runs/30643722834/job/91201627088

I am guessing it is related to

• chore: formalize the default map field names to match default arrow spec #10297

thread 'tokio-rt-worker' (41727) panicked at /usr/local/cargo/git/checkouts/arrow-rs-583cca34693b79b8/1359cb9/arrow-array/src/array/struct_array.rs:91:46:
called `Result::unwrap()` on an `Err` value: InvalidArgumentError("Incorrect datatype for StructArray field \"metadata\", expected Map(\"entries\": non-null Struct(\"keys\": non-null Utf8, \"values\": Utf8), unsorted) got Map(\"entries\": non-null Struct(\"key\": non-null Utf8, \"value\": Utf8), unsorted)")
stack backtrace: