[jira] [Created] (ARROW-11518) [C++] [Parquet] Parquet reader crashes when reading boolean columns

["Andrey Klochkov (Jira)" <ji...@apache.org>]

Andrey Klochkov created ARROW-11518:
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             Summary: [C++] [Parquet] Parquet reader crashes when reading boolean columns
                 Key: ARROW-11518
                 URL: https://issues.apache.org/jira/browse/ARROW-11518
             Project: Apache Arrow
          Issue Type: Bug
          Components: C++
    Affects Versions: 3.0.0
            Reporter: Andrey Klochkov


Parquet file reader crashes while reading boolean columns in {{TypedColumnReaderImpl<DType>::Skip}}. 

The calculation of the buffer size in the code below is not correct as {{value_byte_size}} is 1 for booleans, and the same buffer is used for definition and repetition levels data which require 2 bytes per value.

{code}
     // This will be enough scratch space to accommodate 16-bit levels or any
      // value type
      std::shared_ptr<ResizableBuffer> scratch = AllocateBuffer(
          this->pool_, batch_size * type_traits<DType::type_num>::value_byte_size);

      do {
        batch_size = std::min(batch_size, rows_to_skip);
        values_read =
            ReadBatch(static_cast<int>(batch_size),
                      reinterpret_cast<int16_t*>(scratch->mutable_data()),
                      reinterpret_cast<int16_t*>(scratch->mutable_data()),
                      reinterpret_cast<T*>(scratch->mutable_data()), &values_read);
        rows_to_skip -= values_read;
      } while (values_read > 0 && rows_to_skip > 0);
{code}



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