flarion-weijun commented on PR #25565:
URL: https://github.com/apache/datafusion/pull/25565#issuecomment-5863263682
Thanks for the detailed review! @andygrove Addressed all five points:
1. Restored fixed-width batch sizes, with matching reservations and a
smaller target when memory is tight.
2. Matched spill targets to Arrow interleave allocation estimates.
3. Restored exact batch and metric assertions.
4. Replaced repeated variable-width prefix scans with incremental
accumulation, preserving the fixed-width fast path.
5. Removed post-allocation reservation growth; estimation failures now fail
before allocation.
Also addressed the nits and documented the stricter memory-accounting
behavior. Ready for another look.
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