Hello! I have exactly the same problem, TRUNCATE = 0 por the new csv-long source type, but the header is still too long: 04-21-2020 10:59:55.611 +0000 ERROR StructuredDataHeaderExtractor - Accumulated a line of 540672 bytes while reading a structured header, giving up parsing header Such a long lines CSV are generated in my case by the esxtop tool by vmware. Any clue? Thanks! ... View more