public static void setSampleDoubleCol(DoubleColumnVector col) {
    int size = col.vector.length;
    for(int i = 0; i != size; i++) {
      col.vector[i] = i % 100;
    }
  }
Set the vector to sample data that repeats an iteration from 0 to 99.
@param col
ql/src/test/org/apache/hadoop/hive/ql/exec/vector/TestVectorizedRowBatch.java