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Posted to dev@arrow.apache.org by "Hongze Zhang (Jira)" <ji...@apache.org> on 2020/04/17 13:56:00 UTC

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

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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