in training/utils.py [0:0]
def load_all_codec_checkpoints(output_dir=None) -> List[str]:
"""Helper function to load and concat all checkpoints."""
checkpoints_sorted = sorted_codec_checkpoints(output_dir=output_dir)
datasets = [load_from_disk(checkpoint) for checkpoint in checkpoints_sorted]
datasets = concatenate_datasets(datasets, axis=0)
return datasets