我们在比特桶管道中为python repo执行单元测试。最近我们开始使用pytest xdist(https://pypi.org/project/pytest-xdist/)包，并在通过coverage run -m pytest -n auto命令本地运行时成功并行运行我们的单元测试。这将在本地机器上的所有可用cpu上执行所有单元测试。然而，当我们通过位桶管道使用相同的命令运行测试时，我们会遇到以下异常。关于如何解决这个问题，有什么建议吗？
+ coverage run -m pytest -n auto
============================= test session starts ==============================
platform linux -- Python 3.7.5, pytest-5.4.3, py-1.10.0, pluggy-0.13.1
rootdir: /opt/atlassian/pipelines/agent/build
plugins: celery-4.4.7, forked-1.3.0, xdist-2.2.1, mock-3.5.1
gw0 I / gw1 I / gw2 I / gw3 I
INTERNALERROR> def worker_internal_error(self, node, formatted_error):
INTERNALERROR> """
INTERNALERROR> pytest_internalerror() was called on the worker.
INTERNALERROR>
INTERNALERROR> pytest_internalerror() arguments are an excinfo and an excrepr, which can't
INTERNALERROR> be serialized, so we go with a poor man's solution of raising an exception
INTERNALERROR> here ourselves using the formatted message.
INTERNALERROR> """
INTERNALERROR> self._active_nodes.remove(node)
INTERNALERROR> try:
INTERNALERROR> > assert False, formatted_error
INTERNALERROR> E AssertionError: Traceback (most recent call last):
INTERNALERROR> E File "/usr/local/lib/python3.7/site-packages/_pytest/main.py", line 191, in wrap_session
INTERNALERROR> E session.exitstatus = doit(config, session) or 0
INTERNALERROR> E File "/usr/local/lib/python3.7/site-packages/_pytest/main.py", line 246, in _main
INTERNALERROR> E config.hook.pytest_collection(session=session)
INTERNALERROR> E File "/usr/local/lib/python3.7/site-packages/pluggy/hooks.py", line 286, in __call__
INTERNALERROR> E return self._hookexec(self, self.get_hookimpls(), kwargs)
INTERNALERROR> E File "/usr/local/lib/python3.7/site-packages/pluggy/manager.py", line 93, in _hookexec
INTERNALERROR> E return self._inner_hookexec(hook, methods, kwargs)
INTERNALERROR> E File "/usr/local/lib/python3.7/site-packages/pluggy/manager.py", line 87, in <lambda>
INTERNALERROR> E firstresult=hook.spec.opts.get("firstresult") if hook.spec else False,
INTERNALERROR> E File "/usr/local/lib/python3.7/site-packages/pluggy/callers.py", line 208, in _multicall
INTERNALERROR> E return outcome.get_result()
INTERNALERROR> E File "/usr/local/lib/python3.7/site-packages/pluggy/callers.py", line 80, in get_result
INTERNALERROR> E raise ex[1].with_traceback(ex[2])
INTERNALERROR> E File "/usr/local/lib/python3.7/site-packages/pluggy/callers.py", line 187, in _multicall
INTERNALERROR> E res = hook_impl.function(*args)
INTERNALERROR> E File "/usr/local/lib/python3.7/site-packages/_pytest/main.py", line 257, in pytest_collection
INTERNALERROR> E return session.perform_collect()
INTERNALERROR> E File "/usr/local/lib/python3.7/site-packages/_pytest/main.py", line 453, in perform_collect
INTERNALERROR> E self.config.pluginmanager.check_pending()
INTERNALERROR> E File "/usr/local/lib/python3.7/site-packages/pluggy/manager.py", line 277, in check_pending
INTERNALERROR> E % (name, hookimpl.plugin),
INTERNALERROR> E pluggy.manager.PluginValidationError: unknown hook 'pytest_warning_recorded' in plugin <__channelexec__.WorkerInteractor object at 0x7f11772d84d0>
INTERNALERROR> E assert False
INTERNALERROR>
INTERNALERROR> /usr/local/lib/python3.7/site-packages/xdist/dsession.py:187: AssertionError
INTERNALERROR> Traceback (most recent call last):
INTERNALERROR> File "/usr/local/lib/python3.7/site-packages/_pytest/main.py", line 191, in wrap_session
INTERNALERROR> session.exitstatus = doit(config, session) or 0
INTERNALERROR> File "/usr/local/lib/python3.7/site-packages/_pytest/main.py", line 247, in _main
INTERNALERROR> config.hook.pytest_runtestloop(session=session)
INTERNALERROR> File "/usr/local/lib/python3.7/site-packages/pluggy/hooks.py", line 286, in __call__
INTERNALERROR> return self._hookexec(self, self.get_hookimpls(), kwargs)
INTERNALERROR> File "/usr/local/lib/python3.7/site-packages/pluggy/manager.py", line 93, in _hookexec
INTERNALERROR> return self._inner_hookexec(hook, methods, kwargs)
INTERNALERROR> File "/usr/local/lib/python3.7/site-packages/pluggy/manager.py", line 87, in <lambda>
INTERNALERROR> firstresult=hook.spec.opts.get("firstresult") if hook.spec else False,
INTERNALERROR> File "/usr/local/lib/python3.7/site-packages/pluggy/callers.py", line 208, in _multicall
INTERNALERROR> return outcome.get_result()
INTERNALERROR> File "/usr/local/lib/python3.7/site-packages/pluggy/callers.py", line 80, in get_result
INTERNALERROR> raise ex[1].with_traceback(ex[2])
INTERNALERROR> File "/usr/local/lib/python3.7/site-packages/pluggy/callers.py", line 187, in _multicall
INTERNALERROR> res = hook_impl.function(*args)
INTERNALERROR> File "/usr/local/lib/python3.7/site-packages/xdist/dsession.py", line 112, in pytest_runtestloop
INTERNALERROR> self.loop_once()
INTERNALERROR> File "/usr/local/lib/python3.7/site-packages/xdist/dsession.py", line 135, in loop_once
INTERNALERROR> call(**kwargs)
INTERNALERROR> File "/usr/local/lib/python3.7/site-packages/xdist/dsession.py", line 175, in worker_workerfinished
INTERNALERROR> self._active_nodes.remove(node)
INTERNALERROR> KeyError: <WorkerController gw0>
提前感谢您的帮助！
我也遇到了同样的问题，但在将pytest升级到6.2.2后，我无法解决这个问题
发现问题！我运行的是旧版本的pytest。将最新版本的pytest(在撰写本文时是pytest==6.2.2到我的requirements.txt(固定在一起解决了这个问题。随后的一个问题是，more-itertools包没有内置到我配置的位桶管道容器的python环境中，因此也将其固定在要求中