[ARROW-8499] [C++][Dataset] In ScannerBuilder, batch_size will not work if projecter is not empty

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.16.0
• Fix Version/s: 1.0.0
• Component/s: C++
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/24671
• Assignee: Hongze Zhang
• Reporter: Hongze Zhang
• Created: 17/Apr/20 13:55
• Updated: 11/Jan/23 08:00
• Resolved: 17/Apr/20 14:57

Description

This is due to incomplete logic in function ScanOptions::ReplaceSchema(...)[1].

Introduced since ARROW-7547's fix was applied.

[1] https://github.com/apache/arrow/blob/40cd5b8a81db4fd038d3bcbdcd59cba98f336dd9/cpp/src/arrow/dataset/scanner.cc#L41-L47

Issue Links

• links to: GitHub Pull Request #6967