code: def test_read_large_csv(self):
      file_path = os.path.join(
          self.resource_path, "orca/data/10010.csv"
      )
      data_shard = bigdl.orca.data.pandas.read_csv(file_path)
      res = data_shard.collect()
      assert len(res[0]) == 10009, "number of records should be 10009"
  
file_path: BigDL/python/orca/test/bigdl/orca/data/test_spark_backend.py
imports: import os.path
  import pytest
  from unittest import TestCase
  import shutil
  import bigdl.orca.data
  import bigdl.orca.data.pandas
  from bigdl.dllib.nncontext import *
  from bigdl.orca.data.transformer import *
label_desc: Use image node_id 6 for calling the TestXShardsSparkBackend obj's underlying member method code with example usage: obj.test_read_large_csv() without return types