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Posted to github@arrow.apache.org by "mapleFU (via GitHub)" <gi...@apache.org> on 2023/03/22 02:45:07 UTC

[GitHub] [arrow] mapleFU commented on pull request #34668: GH-34667: [C++][Parquet] Test DeltaLengthByteArrayDecoder with invalid inputs

mapleFU commented on PR #34668:
URL: https://github.com/apache/arrow/pull/34668#issuecomment-1478845203

   The `num_values` is a tricky word, num_values is from DataPageHeader, and means that `num of non-null value + num of null values`. So it includes null value.
   
   In DeltaLengthByteArray, seems real num_values can comes from DELTA encoding.


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