[ARROW-491] [C++] Add FixedWidthBinary type

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.3.0
• Component/s: C++
• External issue URL: https://github.com/apache/arrow/issues/16134
• Assignee: Wes McKinney
• Reporter: Wes McKinney
• Created: 18/Jan/17 00:15
• Updated: 11/Jan/23 07:09
• Resolved: 15/Mar/17 15:10

Description

This would be very useful for interacting with Parquet and other data sources that use fixed-byte-width binary types, as a more efficient version of List<UInt8>. We can resolve adding this type to the format spec later.

julienledem nongli do you have an opinion about this type? Would be equivalent to FIXED_LEN_BYTE_ARRAY in Parquet. It would be convenient to implement Decimal types on top of this

Issue Links

• relates to: ARROW-632 [Python] Add support for FixedWidthBinary type