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Fix bug with null buffer offset in boolean not kernel #418

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jhorstmann
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Which issue does this PR close?

Closes #417.

Rationale for this change

What changes are included in this PR?

Are there any user-facing changes?

No

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Codecov Report

Merging #418 (5bc8198) into master (ddc8a36) will increase coverage by 0.00%.
The diff coverage is 100.00%.

Impacted file tree graph

@@           Coverage Diff           @@
##           master     #418   +/-   ##
=======================================
  Coverage   82.62%   82.62%           
=======================================
  Files         162      162           
  Lines       44479    44487    +8     
=======================================
+ Hits        36750    36759    +9     
+ Misses       7729     7728    -1     
Impacted Files Coverage Δ
arrow/src/compute/kernels/boolean.rs 96.76% <100.00%> (+0.04%) ⬆️
parquet/src/encodings/encoding.rs 95.04% <0.00%> (+0.19%) ⬆️

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@alamb alamb left a comment

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Looks good to me -- thank you @jhorstmann 👍

@@ -813,6 +813,19 @@ mod tests {
assert_eq!(c, expected);
}

#[test]
fn test_bool_array_not_sliced() {
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For anyone interested, without the code change this test fails in the following way:


---- compute::kernels::boolean::tests::test_bool_array_not_sliced stdout ----
thread 'compute::kernels::boolean::tests::test_bool_array_not_sliced' panicked at 'assertion failed: ceil(offset + len, 8) <= buffer.len() * 8', arrow/src/util/bit_chunk_iterator.rs:33:9


failures:
    compute::kernels::boolean::tests::test_bool_array_not_sliced

@alamb alamb added arrow Changes to the arrow crate bug labels Jun 7, 2021
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alamb commented Jun 8, 2021

FYI @jorgecarleitao

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Boolean not kernel does not take offset of null buffer into account
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