[ARROW-1942] [C++] Hash table specializations for small integers

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.9.0
• Component/s: C++
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/17932
• Assignee: Panchen Xue
• Reporter: Wes McKinney
• Created: 20/Dec/17 21:48
• Updated: 11/Jan/23 07:17
• Resolved: 20/Feb/18 17:40

Description

There is no need to use a dynamically-sized hash table with uint8, int8, since a fixed-size lookup table can be used and avoid hashing altogether

Issue Links

• links to: GitHub Pull Request #1551