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Minor: return internal error rather than panic on unexpected error in COUNT DISTINCT - #9712
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alamb
marked this pull request as ready for review
March 20, 2024 17:30
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| @@ -268,8 +268,11 @@ impl Accumulator for DistinctCountAccumulator { | |||
| let array = &states[0]; | |||
| let list_array = array.as_list::<i32>(); | |||
| for inner_array in list_array.iter() { | |||
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should we just filter out Nones? just thinking
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I think filtering out nulls would potentially silently ignore errors
I think the rationale goes like
- This code is used to combine multiple partial results (the results of calling
Self::state()) - Since
Self::statenever returnsNone-- it always returnsOk(vec![ScalarValue::List(arr)])then this merge code should never receive aNone
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Co-authored-by: comphead <comphead@users.noreply.github.com>
alamb
commented
Mar 21, 2024
ContributorAuthor
Thanks for the review @comphead |
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Which issue does this PR close?
Follow on to #9679
Rationale for this change
@Omega359 pointed out that the use of
expectwould panic on unexpected results: #9679 (comment)What changes are included in this PR?
Change a panic into an internal error
Are these changes tested?
No (it is "impossible" to hit this code)
Are there any user-facing changes?
Better UX on unexpected error