fn plan_region_batch(
stripped_batch: &RecordBatch,
physical_table_id: TableId,
region_number: u32,
mask: &RegionMask,
) -> Result<Option<PlannedRegionBatch>>fn plan_region_batch(
stripped_batch: &RecordBatch,
physical_table_id: TableId,
region_number: u32,
mask: &RegionMask,
) -> Result<Option<PlannedRegionBatch>>