Does ignore option of Pyspark DataFrameWriter jdbc function ignore entire transaction or just offending rows?

Question

The Pyspark DataFrameWriter class has a jdbc function for writing a dataframe to sql. This function has an --ignore option that the documentation says

Answer 1

mode("ingore") is just NOOP if table (or another sink) already exists and writing modes cannot be combined. If you're looking for something like INSERT IGNORE or INSERT INTO ... WHERE NOT EXISTS ... you'll have to do it manually, for example with mapPartitions.