
Open the FPSM raw-output Arrow dataset for one or more scenarios
open_fps_raw_out_dataset.RdMirrors open_forcs_log_summary_dataset(): a single root opens directly,
several roots under different parents are combined into a UnionDataset
(Arrow cannot treat Hive trees under different parents as one dataset), and
missing roots are dropped.
See also
Other FPSM helpers:
fps_output_files(),
fps_pools(),
fps_run_docker(),
fps_stocks_by_pool(),
read_fps_raw_out(),
write_fps_raw_out_parquet()