code: def tile(cls, op):
      x, y = op.x, op.y
      y_is_x = y is x
  
      if len(x.chunks) == 1 and len(y.chunks) == 1:
          return cls._tile_one_chunk(op)
  
      x, y = yield from cls._rechunk_cols_into_one(x, y)
      (ret,) = cls._tile_chunks(op, x, y)
      if y_is_x:
          fill_diagonal(ret, 0)
      return [(yield from recursive_tile(ret))]
  
file_path: mars/mars/learn/metrics/pairwise/haversine.py
imports: import numpy
  from ....None import opcodes
  from ....core import recursive_tile
  from ....serialization.serializables import KeyField, BoolField
  from ....tensor.core import TensorOrder
  from ....tensor.indexing import fill_diagonal
  from ....tensor.array_utils import as_same_device, device
  from .core import PairwiseDistances
label_desc: Use image node_id 7 for calling the HaversineDistances obj's underlying member method code with example usage: obj.tile(cls, op) and returns: list, cls