petastorm/spark/spark_dataset_converter.py (5 lines):
	- line 195: # TODO: generate a best tuned value for default worker count value
	- line 339: # TODO: auto tune best batch size in default case.
	- line 646: # TODO: also check file size for other file system.
	- line 714: # TODO: Improve default behavior to be automatically choosing the best way.
	- line 726: # TODO: improve this by read parquet file metadata to get count


petastorm/unischema.py (1 line):
	- line 157: # TODO: Changing fields in this class or the UnischemaField will break reading due to the schema being pickled next to


petastorm/workers_pool/thread_pool.py (1 line):
	- line 82: TODO: consider using a standard thread pool