Antoine Pitrou created ARROW-14041:
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             Summary: [C++] Review uses of BitmapReader in Parquet decoders
                 Key: ARROW-14041
                 URL: https://issues.apache.org/jira/browse/ARROW-14041
             Project: Apache Arrow
          Issue Type: Wish
          Components: C++
            Reporter: Antoine Pitrou


Some Parquet decoders make use of {{BitmapReader}} when decoding data with 
missing values. {{BitBlockCounter}} or {{BitRunReader}} might actually be more 
efficient.



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