[arrow] 09/28: ARROW-8499: [C++][Dataset] In ScannerBuilder, batch_size will not wor…

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commit 5ba9701aa9999f9f8382b6ba65bd919d21f8e3f4
Author: Hongze Zhang <ho...@intel.com>
AuthorDate: Fri Apr 17 10:56:54 2020 -0400

    ARROW-8499: [C++][Dataset] In ScannerBuilder, batch_size will not wor…
    
    …k if projecter is not empty
    
    Closes #6967 from zhztheplayer/ARROW-8499
    
    Authored-by: Hongze Zhang <ho...@intel.com>
    Signed-off-by: Benjamin Kietzman <be...@gmail.com>
---
 cpp/src/arrow/dataset/scanner.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/cpp/src/arrow/dataset/scanner.cc b/cpp/src/arrow/dataset/scanner.cc
index 701d900..a78450b 100644
--- a/cpp/src/arrow/dataset/scanner.cc
+++ b/cpp/src/arrow/dataset/scanner.cc
@@ -43,6 +43,7 @@ std::shared_ptr<ScanOptions> ScanOptions::ReplaceSchema(
   auto copy = ScanOptions::Make(std::move(schema));
   copy->filter = filter;
   copy->evaluator = evaluator;
+  copy->batch_size = batch_size;
   return copy;
 }