[ARROW-5636] [C++][Gandiva] Expression cache should not use ToString on data type

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: C++ - Gandiva
• External issue URL: https://github.com/apache/arrow/issues/22073
• Assignee: Unassigned
• Reporter: Pindikura Ravindra
• Created: 18/Jun/19 05:59
• Updated: 11/Jan/23 07:41

Description

The expression cache in gandiva generates uses the ToString() method of arrow::DataType() for both hashing and equality.

This is error-prone - we should have a visitor for generating hash, and use the equality visitor for comparison.

fsaintjacques praveenbingo