Release arrow-rs / parquet Minor version `57.3.0` (January 2026)

[alamb]

Let's keep the code flowing. Part of

• [EPIC] A collection of release tickets #7392

Here is the maintenance branch:

• https://github.com/apache/arrow-rs/tree/57_maintenance

Release Checklist:

• Verify with downstream DataFusion tests: Update to arrow/parquet 57.3.0 datafusion#20115
• Release notes and bump version: [57_maintenance] Update version to 57.3.0, add changelog #9333
• Release Candidate + Vote thread: https://lists.apache.org/thread/n4rm81h3qo7q152n81ff23tlm4jqfcgb
• Release to crates.io / approval:
• Create follow on tickets

items for release

• [regression] Error with adaptive predicate pushdown: "Invalid offset in sparse column chunk data: 754, no matching page found." #9239
• [Parquet] Provide only encrypted column stats in plaintext footer #8305
• fix: ensure BufferBuilder::truncate doesn't overset length #9288
• Mark BufferBuilder::new_from_buffer as unsafe #9292
• [regression] Sealing the Array trait broke downstream crates #9184

[etseidl]

Should we sneak in #8305 with this release?

[adamreeve]

Should we sneak in #8305 with this release?

It would be good to get that in. It changes behaviour but is a correctness fix and encryption is still marked experimental, so I think it's OK to include in a minor release.

[alamb]

Should we sneak in #8305 with this release?

It would be good to get that in. It changes behaviour but is a correctness fix and encryption is still marked experimental, so I think it's OK to include in a minor release.

Sounds good -- I added it to the list

[alamb]

I am planning to create some backport PRs today

[alamb]

I have created a maintenance branch: https://github.com/apache/arrow-rs/tree/57_maintenance

And created backports for the PRs listed above

• [57_maintenance] [regression] Error with adaptive predicate pushdown: "Invalid offset …(#9301) #9309
• [57_maintenance[Parquet] Provide only encrypted column stats in plaintext footer (#8305) #9310
• [57_maintenance] fix: ensure BufferBuilder::truncate doesn't overset length (#9288) #9311
• [57_maintenance] Mark BufferBuilder::new_from_buffer as unsafe (#9292) #9312
• [57_maintenance] Revert "Seal Array trait (#9092)", mark Array as unsafe (#9234) #9313

Once we merge those I'll create a PR for a readme and version bump and create a RC

I will likely create the RC on Monday to give anyone else who wants to propose something for inclusion a time to do so. If you would like to propose something, please create a PR that targets the 57_maintenance branch (like the examples above)

[jhorstmann]

#9325 is another bugfix that we should consider.

[alamb]

#9325 is another bugfix that we should consider.

Agreed. Made a backport PR here

• [maintenance_57] Fix string array equality when the values buffer is the same and only the offsets to access it differ (#9325) #9330