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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2022/05/03 11:59:44 UTC

[GitHub] [arrow-rs] HaoYang670 opened a new issue, #1639: Bug (`substring` kernel): The null buffer is not aligned when `offset != 0`

HaoYang670 opened a new issue, #1639:
URL: https://github.com/apache/arrow-rs/issues/1639

   **Describe the bug**
   Track https://github.com/apache/arrow-rs/pull/1633#discussion_r863308866
   We have the bug in `BinaryArray` and `StringArray` in the substring kernel.
   
   **To Reproduce**
   ```rust
       fn offset_fixed_size_binary() -> Result<()> {
           let values = *b"hellotherearrow";
           let offsets: [i32; 4] = [0, 5, 10, 15];
           // set the first and third element to be valid
           let bits_v = [0b101_u8];
   
           let data = ArrayData::builder(DataType::Binary)
               .len(2)
               .add_buffer(Buffer::from_slice_ref(&offsets))
               .add_buffer(Buffer::from_slice_ref(&values))
               .offset(1)
               .null_bit_buffer(Buffer::from(bits_v))
               .build()
               .unwrap();
           // array is `[null, "arrow"]`
           let array = BinaryArray::from(data);
           // result is `[null, "rrow"]`
           let result = substring(&array, 1, None)?;
           let result = result
               .as_any()
               .downcast_ref::<BinaryArray>()
               .unwrap();
           let expected = BinaryArray::from_opt_vec(
               vec![None, Some(b"rrow")],
           );
           assert_eq!(result, &expected);
   
           Ok(())
       }
   ```
   **Expected behavior**
   1. fix the bug
   2. add tests
   
   **Additional context**
   Add any other context about the problem here.
   


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[GitHub] [arrow-rs] alamb closed issue #1639: Bug (`substring` kernel): The null buffer is not aligned when `offset != 0`

Posted by GitBox <gi...@apache.org>.
alamb closed issue #1639: Bug (`substring` kernel): The null buffer is not aligned when `offset != 0`
URL: https://github.com/apache/arrow-rs/issues/1639


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[GitHub] [arrow-rs] HaoYang670 commented on issue #1639: Bug (`substring` kernel): The null buffer is not aligned when `offset != 0`

Posted by GitBox <gi...@apache.org>.
HaoYang670 commented on issue #1639:
URL: https://github.com/apache/arrow-rs/issues/1639#issuecomment-1120325232

   blocked by #1665 


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