@Override
  public void shallowCopyTo(ColumnVector otherCv) {
    TimestampColumnVector other = (TimestampColumnVector)otherCv;
    super.shallowCopyTo(other);
    other.time = time;
    other.nanos = nanos;
  }
Set the utc boolean variable
@param value
storage-api/src/java/org/apache/hadoop/hive/ql/exec/vector/TimestampColumnVector.java