code: def s3_connection():
      host, port = "localhost", find_free_port()
      access_key, secret_key = "arrow", "apachearrow"
      return host, port, access_key, secret_key
  
imports: import functools
  import os
  import pathlib
  import subprocess
  import sys
  import time
  import urllib.request
  import pytest
  from pytest_lazyfixture import lazy_fixture
  import hypothesis
  from ..conftest import groups, defaults
  from pyarrow import set_timezone_db_path
  from pyarrow.util import find_free_port
label_desc: Use image node_id 8 for calling a global function with example usage: s3_connection() and returns: host,  port,  access_key,  secret_key