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POC: batch-granular Parquet scans with the push decoder and scan_plan read-ahead - #24086

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adriangb wants to merge 5 commits into

apache:mainfrom

pydantic:claude/datafusion-rowgroup-buffering-ec9abc

Commits on Oct 5, 2026
- chore: pin arrow-rs with batch-granular push decoding and scan_plan
  
  adriangb
  and
  claude
  committed
  bd71221
- POC: batch-granular Parquet scans with the push decoder and scan_plan read-ahead
  
  adriangb
  and
  claude
  committed
  99c5d06
- remove read_ahead_conditional; read-ahead always fetches conditional ranges
  
  adriangb
  and
  claude
  committed
  3df4d7e
- account Parquet read-ahead in the MemoryPool
  
  adriangb
  and
  claude
  committed
  d6d54fd
Commits on Oct 8, 2026
- add read-ahead metrics: read_ahead_bytes_fetched and read_ahead_wait_time
  adriangb
  committed
  b281cee