code: def test_orc_aggregate_files_offset(orc_files):
      # Default read should give back 16 partitions. Therefore,
      # specifying split_stripes=11 & aggregate_files=True should
      # produce 2 partitions (with the first being larger than
      # the second)
      df2 = dd.read_orc(
          orc_files[:2], split_stripes=11, aggregate_files=True
      )
      assert df2.npartitions == 2
      assert len(df2.partitions[0].index) > len(df2.index) // 2
  
file_path: dask/dask/dataframe/io/tests/test_orc.py
imports: from __future__ import annotations
  import glob
  import os
  import shutil
  import tempfile
  import numpy
  import pandas
  import pytest
  import dask.dataframe
  from dask.dataframe.optimize import optimize_dataframe_getitem
  from dask.dataframe.utils import assert_eq
label_desc: Use image node_id 7 for calling a global function with example usage: test_orc_aggregate_files_offset(orc_files) without return types