Serde feature is broken

[vadimpiven]

Describe the bug

Arrow-schema of the latest version requires the feature serde to be explicitly set https://github.com/apache/arrow-rs/blob/54.2.0/arrow-schema/Cargo.toml#L49
This PR #14597 have removed the line

datafusion/datafusion/core/Cargo.toml

Line 77 in 3f900ac

serde = ["arrow-schema/serde"]

which previously enabled this feature. So now "serde" feature is not enabled (checked Cargo.lock), and I am getting compilation errors saying serde::Serialize is not implemented for Schema from arrow-schema.

To Reproduce

No response

Expected behavior

Serde feature works in datafusion 46, as it worked in version 45.

Additional context

As a hotfix I added to my project

[dependencies]
arrow-schema = { version = "*", features = ["serde"] }

and everything compiled again.

[vadimpiven]

Reopening, closed by mistake by merging PR in fork.

[Omega359]

I encountered this locally, thx for filing the issue.

[alamb]

BTW I think we should consider fixing this in a 46.0.0 release.

• Filed Release DataFusion 46.0.1 Patch or 46.1.0 minor release (March 2025) #15151 to track