@Override
  public Object create() {
    final ArrayList<Object> list = new ArrayList<Object>(fields.size());
    for (int i = 0; i < fields.size(); ++i) {
      list.add(null);
    }
    return list;
  }
The ArrayWritableObjectInspector will inspect an ArrayWritable, considering it as a Hive struct.<br>
It can also inspect a List if Hive decides to inspect the result of an inspection.
ql/src/java/org/apache/hadoop/hive/ql/io/parquet/serde/ArrayWritableObjectInspector.java