[GitHub] [arrow] wesm commented on pull request #13753: ARROW-17259: [C++] Do not use shared_ptr with kernel function signatures, do less copying of shared_ptrs

[GitBox]

wesm commented on PR #13753:
URL: https://github.com/apache/arrow/pull/13753#issuecomment-1204244852

   I think the reason is the change from 9.0.0 to 10.0.0 which added one byte, 
here is the doctest
   
   ```
       >>> pq.read_metadata('example.parquet')
       <pyarrow._parquet.FileMetaData object at ...>
         created_by: parquet-cpp-arrow version ...
         num_columns: 2
         num_rows: 3
         num_row_groups: 1
         format_version: 2.6
         serialized_size: 561
   ```


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