private void testWriterText(TypeInfo type) throws HiveException {
Text t1 = new Text("alpha");
Text t2 = new Text("beta");
BytesColumnVector bcv = new BytesColumnVector(vectorSize);
bcv.noNulls = false;
bcv.initBuffer();
bcv.setVal(0, t1.getBytes(), 0, t1.getLength());
bcv.isNull[1] = true;
bcv.setVal(2, t2.getBytes(), 0, t2.getLength());
bcv.isNull[3] = true;
bcv.setVal(4, t1.getBytes(), 0, t1.getLength());