mapleFU commented on PR #34096:
URL: https://github.com/apache/arrow/pull/34096#issuecomment-1426164685

   Great, can you help me to understand this patch? So, previouslu DATA_PAGE_V2 
has bad num_rows in header, if it has:
   
   ```
   Page1: [50 rows] Page2: [50 rows] 
   ```
   
   The header would be:
   
   ```
   Page1: [50 rows] Page2: [100 rows] 
   ```
   
   And `num_buffered_rows_` is within every page. `rows_written_` is equal to 
sum of `num_buffered_rows_`, though currently they are added together?
   
   Am I right?


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