fn pick_count_first_where(
sorted_runs: Vec<SortedRun<FileHandle>>,
max_output_file_size: Option<u64>,
mapper: &PrimaryKeyRangeMapper,
is_eligible: impl Fn(&Candidate) -> bool,
) -> Vec<FileHandle>fn pick_count_first_where(
sorted_runs: Vec<SortedRun<FileHandle>>,
max_output_file_size: Option<u64>,
mapper: &PrimaryKeyRangeMapper,
is_eligible: impl Fn(&Candidate) -> bool,
) -> Vec<FileHandle>