class_docstr: Col-based storage.
class_docstr_tok: ["Col-based","storage","."]
docstr: For debug, read data repeatedly.
code: def reset_size(self):
      """
      For debug, read data repeatedly.
      """
      for col in self._data:
          if isinstance(col, _ListColumn):
              col.reset_size()
      self._size = self._get_size()
  
imports: import threading
  import copy
  from enum import Enum, auto
  from typing import List, Tuple, Union, Dict, Optional
  from collections import deque, namedtuple
label_desc: Use image node_id 20 for calling the DataQueue obj's underlying member method code with example usage: obj.reset_size() without return types