[GitHub] [arrow-rs] jhorstmann opened a new issue #526: Incorrect value in error message from GenericListArray::try_new_from_array_data

[GitBox <gi...@apache.org>]

jhorstmann opened a new issue #526:
URL: https://github.com/apache/arrow-rs/issues/526


   **Describe the bug**
   The error message should report the number of buffers instead of the arrays length:
   
       if data.buffers().len() != 1 {
           return Err(ArrowError::InvalidArgumentError(
               format!("ListArray data should contain a single buffer only (value offsets), had {}",
                       data.len())));
       }
   
   
   **To Reproduce**
   Try to create a ListArray using ArrayDataBuilder and make_array, but forgetting to add a buffer.
   
   **Expected behavior**
   Error message should contain the actual number of buffers.
   
   


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