DanielLeens commented on issue #9948:
URL: https://github.com/apache/seatunnel/issues/9948#issuecomment-5148481499

   Thanks for checking this against current `dev` and opening #11606.
   
   The key distinction is that `csv_use_header_line = true` tells the CSV 
reader to consume the first CSV record as field names, but it does not infer 
field types or remove the need for `schema`. For CSV input, SeaTunnel still 
needs the configured schema to build the table fields and types.
   
   So this looks like a documentation/usage clarification rather than a Doris 
sink bug. The recommended config shape is to keep `schema`, enable 
`csv_use_header_line` only when the first row really contains column names, and 
avoid also setting `skip_header_row_number = 1` for the same header row.
   
   Keeping this open until #11606 lands, then it should be reasonable to close 
as documented behavior.
   


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