Greenplum text field imported as LONG in DS

Hello -

I have a table in Greenplum with datatype "character varying ( 1024)". When I am importing this table in DS, DS is showing Datatype for this field as LONG. Also DS is setting commit size = 1 while loading data to this table as DS thinks that one of the field has datatype LONG.

What's the maximum length of Green Plum text field to avoid conversion to LONG in DS?

Thanks !!