[branch-55] fix: correct list field inner type in array functions (#24345) - #24367
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## Which issue does this PR close? - Closes apache#24341 ## Rationale for this change There is a regression from 54.1.0 to 55.0.0rc2 where the spark function `slice` can fail as demonstrated in the updated unit test, and as described in the connected issue. ## What changes are included in this PR? In the nested functions, get the inner field directly from the input for array slicing operations. Also, since it is possible the inner list could be non-nullable emit an empty slice instead of a null child element for the outer lists's nulls. ## Are these changes tested? Added 6 new tests in the SLT suite. ## Are there any user-facing changes? None
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## branch-55 #24367 +/- ##
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- Coverage 81.14% 81.14% -0.01%
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Files 1110 1110
Lines 386132 386135 +3
Branches 386132 386135 +3
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- Hits 313325 313323 -2
- Misses 54340 54343 +3
- Partials 18467 18469 +2 ☔ View full report in Codecov by Harness. 🚀 New features to boost your workflow:
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Jefffrey
approved these changes
Aug 14, 2026
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This is a backport of #24345 for the release 55.0.0.