Hongze Zhang created ARROW-8499:
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Summary: [C++][Dataset] In ScannerBuilder, batch_size will not
work if projecter is not empty
Key: ARROW-8499
URL: https://issues.apache.org/jira/browse/ARROW-8499
Project: Apache Arrow
Issue Type: Improvement
Components: C++
Affects Versions: 0.16.0
Reporter: Hongze Zhang
Assignee: Hongze Zhang
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
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