tools/multithreaded-writer/SampleLocalCsvIngestion/src/main/java/com/amazonaws/sample/csv/mapping/SampleCsvMapper.java (2 lines):
	- line 60: // TODO: group records by some common attributes, to decrease ingestion cost and bytes transmitted over network
	- line 61: // TODO: then, extract common attributes from each WriteRecordsRequest


tools/multithreaded-writer/SampleLocalCsvIngestion/src/main/java/com/amazonaws/sample/csv/mapping/SampleCsvRow.java (1 line):
	- line 7: // TODO: adjust model to your CSV file