presto-kudu/src/main/java/io/prestosql/plugin/kudu/KuduRecordCursor.java/KuduRecordCursor/getRowLength
class KuduRecordCursor:    private int getRowLength()
    {
        org.apache.kudu.util.Slice rawData = getCurrentRowRawData();
        if (rawData != null) {
            return rawData.length();
        }
        else {
            return columnTypes.size();
        }
    }