message: Rework on tensorflow_io/hadoop/python/ops/hadoop_dataset_ops.py
diff: @@ -17,14 +17,15 @@ from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  -from tensorflow.contrib.hadoop.python.ops import gen_dataset_ops
  -from tensorflow.contrib.hadoop.python.ops import hadoop_op_loader # pylint: disable=unused-import
  from tensorflow.python.data.ops import dataset_ops
  from tensorflow.python.data.util import nest
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import tensor_shape
  +from tensorflow.python.framework import load_library
  +hadoop_ops = load_library.load_op_library("tensorflow_io/hadoop/python/ops/_hadoop_ops.so")
  +
  class SequenceFileDataset(dataset_ops.DatasetSource):
  """A Sequence File Dataset that reads the sequence file."""
  @@ -59,7 +60,7 @@ class SequenceFileDataset(dataset_ops.DatasetSource):
  filenames, dtype=dtypes.string, name="filenames")
  def _as_variant_tensor(self):
  - return gen_dataset_ops.sequence_file_dataset(
  + return hadoop_ops.sequence_file_dataset(
  self._filenames, nest.flatten(self.output_types))
  @property
  