[ARROW-4176] [C++/Python] Human readable arrow schema comparison

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Component/s: C++, Python
• Labels: beginner
• External issue URL: https://github.com/apache/arrow/issues/20759
• Assignee: Unassigned
• Reporter: Florian Jetter
• Created: 07/Jan/19 09:04
• Updated: 11/Jan/23 07:32

Description

When working with arrow schemas it would be helpful to have a human readable representation of the diff between two schemas.

This could be either exposed as a function returning a string/diff object or via a function raising an Exception with this information.

For instance:

schema_diff = get_schema_diff(schema1, schema2)
expected_diff = """
- col_changed: int8
+ col_changed: double

+ col_additional: int8
"""
assert schema_diff == expected_diff