feat(parquet): make `PushBuffers` boundary-agnostic for prefetch IO#9697

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HippoBaro wants to merge 3 commits intoapache:mainfrom

HippoBaro:boundary_agnostic_pushbuffers

Commits on Apr 13, 2026

feat(parquet): make `PushBuffers` boundary-agnostic for prefetch IO
HippoBaro
committed

Commits on Apr 15, 2026

feat(parquet): replace watermark release with per-range release
HippoBaro
committed
feat(parquet): add retention filter to discard unrequested prefetch data
HippoBaro
committed