[ARROW-13257] [Java][Dataset] Allow passing empty columns for projection

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.0.1
• Fix Version/s: 6.0.0
• Component/s: Java
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/18733
• Assignee: Hongze Zhang
• Reporter: Hongze Zhang
• Created: 05/Jul/21 08:00
• Updated: 11/Jan/23 08:31
• Resolved: 08/Oct/21 05:13

Description

Projecting on empty columns (functionally like a pure metadata query on source of data) was supported in C++ Dataset API in ARROW-11174. This is to align Java API's behavior within C++.

Issue Links

• links to: GitHub Pull Request #10652