spark thrift server issue: Length field is empty for varchar fields

Question

I am trying to read Data from Spark Thrift Server using SAS. In the table definition through DBeaver, I am seeing that Length field is empty only for fields with VARCHAR data type. I can see the length in the Data Type field as varchar(32). But that doesn't suffice my purpose as the SAS application taps into the Length field. Since, this field is not populated now, SAS is defaulting to the max size and as a result its becoming extremely slow. I get the length field populated in Hive.