Draft: Add dual-path Parquet level-prepass rollout - #23967

Draft

vyasr wants to merge 15 commits into

NVIDIA:mainfrom

vyasr:codex/parquet-level-prepass-series

Commits on Sep 3, 2026

refactor(parquet): add dual-path level decode dispatch
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2b9b0d3
feat(parquet): add opt-in flat generic level prepass
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da96b7d
feat(parquet): extend flat generic prepass to non-string encodings
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2208b3c
feat(parquet): add flat string prepass state contract
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58e48e4
feat(parquet): add opt-in flat GENERAL and BSS prepass consumers
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1a40bff
feat(parquet): add opt-in flat delta prepass consumers
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b82d35f
feat(parquet): add opt-in nested generic level prepass
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8ee3e0b
feat(parquet): add opt-in nested GENERAL and BSS prepass consumers
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259f332
feat(parquet): add opt-in nested delta prepass consumers
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4b230b3
feat(parquet): add opt-in generic list level prepass
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7d53e82
feat(parquet): add opt-in GENERAL and BSS list level prepass
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18c8df1
feat(parquet): add opt-in delta list level prepass
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ac44b3b
fix(parquet): complete opt-in level prepass state
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d738497
perf(parquet): enable level prepass by default
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12947df
fix(parquet): preserve nested prepass page-local ranks
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b966601