xdist + logging + @parametrize log on file only the latest test execution

pytest.ini

[pytest]
python_files = test_*
python_classes = Test*
python_functions = test_*
log_cli = True
log_cli_level = DEBUG
log_cli_format = %(asctime)s %(filename)s %(funcName)s %(levelname)s %(message)s
log_cli_date_format = %d-%m-%Y %H:%M:%S
log_file = log.log
log_file_level = DEBUG
log_file_format = %(asctime)s %(filename)s %(funcName)s %(levelname)s %(message)s
log_file_date_format = %d-%m-%Y %H:%M:%S

if test file is

import requests
import pytest
from pytest import mark
import logging
logging.getLogger("urllib3").setLevel(logging.WARNING)
logging.getLogger("urllib3").propagate = False

@mark.parametrize('endpoint', [
    "https://a.com",
    "https://b.com",
    "https://c.com",
    "https://d.com"
])
def test_endpoints(endpoint):
    logging.debug(endpoint)

you don't obtain any console output due to https://github.com/pytest-dev/pytest-xdist/issues/402 ,

but there is something strange also with the file log.

running the test without the use of xdist:

the log file is

03-08-2020 15:41:52 test_dist_parametrized.py test_endpoints DEBUG https://a.com
03-08-2020 15:41:52 test_dist_parametrized.py test_endpoints DEBUG https://b.com
03-08-2020 15:41:52 test_dist_parametrized.py test_endpoints DEBUG https://c.com
03-08-2020 15:41:52 test_dist_parametrized.py test_endpoints DEBUG https://d.com

using xdist the log file contains

03-08-2020 15:43:56 test_dist_parametrized.py test_endpoints DEBUG https://c.com

it contains only the log of the latest test executed ( c.com )

Start with the pytest.ini logging configuration and reproduce the behavior using test_dist_parametrized.py with the four parametrized endpoints, both with and without xdist. Trace how workers open or write log.log, then verify that the xdist run preserves log records from every test execution rather than only the latest one.