private VectorizedRowBatch getBatch() {
    VectorizedRowBatch b = new VectorizedRowBatch(2);
    LongColumnVector v = new LongColumnVector();
    v.vector[0] = 10;
    v.vector[1] = 20;
    b.cols[0] = v;
    b.cols[1] = new LongColumnVector();
    return b;
  }
Test vectorized expression handling for the case where there is a scalar on
the left and a column vector on the right.
ql/src/test/org/apache/hadoop/hive/ql/exec/vector/expressions/TestVectorScalarColArithmetic.java