fix: preserve Spark AVG buffer and overflow semantics - #5420

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sunchao wants to merge 6 commits into

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sunchao:dev/chao/codex/oss-avg-empty-partial-state

Commits on Aug 26, 2026

fix: use zero sums for empty AVG partial buffers
sunchao
committed
58e0bac
fix: revert unsafe partial aggregates after final fallback
sunchao
committed
d13531b
fix: fall back for high-precision decimal window averages
sunchao
committed
c22d37b
Merge prerequisite aggregate fallback fix from #5421
sunchao
committed
4437286
fix: preserve decimal AVG overflow and Spark shuffle semantics
sunchao
committed
c605be8
test: refresh wide-decimal shuffle plan snapshots
sunchao
committed
e5aa8d7