Yeah the big benefit is that it requires very little setup.

You create a new partitioned table/location from the originally mapped file using a CTAS like so:

  CREATE TABLE new_table_name
  WITH (
    format = 'PARQUET',
    parquet_compression = 'SNAPPY',
    external_location = 's3://your-bucket/path/to/output/'
  ) AS
  SELECT *
  FROM original_table_name
  PARTITIONED BY partition_column_name

You can probably create a hash and partition by the last character if you want 16 evenly sized partitions. Unless you already have a dimension to partition by.