[ARROW-15496] [C++][Python] Log warning when user tries to write parquet table with incompatible type

• Type: Wish
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Component/s: C++, Parquet, Python
• Labels: typeinfo warnings
• External issue URL: https://github.com/apache/arrow/issues/30971

Language

Python

• Assignee: Unassigned
• Reporter: Grant Williams
• Created: 28/Jan/22 17:58
• Updated: 11/Jan/23 11:37

Description

Could we get a logged warning when a user tries to `pyarrow.parquet.write_table()` with `version=1.0` and a schema that contains an incompatible `uint32()` type? I don't think the behavior to upcast to an `int64()` is immediately obvious (although the docs are clear on it) and I think it would help prevent some confusion for other users.

Issue Links

• relates to: ARROW-15508 [C++] Making warning handler configurable