Reports the counting path's bucket ceiling -- the EFFECTIVE value, so a program that never set
it is told 4194304 rather than the 0 that is stored.
integer(int64) function parquet_get_sort_counting_bucket_limit() result(n) n = cfg_sort_counting_bucket_limit if (n <= 0) n = sort_counting_bucket_limit_builtin end function parquet_get_sort_counting_bucket_limit