ZEO.Exceptions.ServerException: (‘builtins.FileNotFoundError’, (2, ‘No such file or directory’)) in Plone 6.0.7

[zopyx]

As part of a Plone 6.0.8 import migration, I get this reproducible ZEO error for some content-types. While the handling and the code for all content-types are identical, a few content types raise this error during import.

• Plone 6.0.8 on Python 3.11

I am unable to provide a minimal test case.

  File "/home/ajung/src/unibo/incronaca-plone6/parts/instance/bin/interpreter", line 306, in <module>
    exec(_val)
  File "<string>", line 1, in <module>
  File "scripts/migration-import.py", line 491, in <module>
    import_ct(ct)
  File "scripts/migration-import.py", line 235, in import_ct
    import_content(jsonfile=data, return_json=True)
  File "/home/ajung/src/unibo/incronaca-plone6/src/collective.exportimport/src/collective/exportimport/import_content.py", line 184, in __call__
    msg = self.do_import(data)
          ^^^^^^^^^^^^^^^^^^^^
  File "/home/ajung/src/unibo/incronaca-plone6/src/collective.exportimport/src/collective/exportimport/import_content.py", line 254, in do_import
    transaction.commit()
  File "/home/ajung/src/unibo/incronaca-plone6/eggs/transaction-3.1.0-py3.11.egg/transaction/_manager.py", line 257, in commit
    return self.manager.commit()
           ^^^^^^^^^^^^^^^^^^^^^
  File "/home/ajung/src/unibo/incronaca-plone6/eggs/transaction-3.1.0-py3.11.egg/transaction/_manager.py", line 134, in commit
    return self.get().commit()
           ^^^^^^^^^^^^^^^^^^^
  File "/home/ajung/src/unibo/incronaca-plone6/eggs/transaction-3.1.0-py3.11.egg/transaction/_transaction.py", line 283, in commit
    reraise(t, v, tb)
  File "/home/ajung/src/unibo/incronaca-plone6/eggs/transaction-3.1.0-py3.11.egg/transaction/_compat.py", line 50, in reraise
    raise value
  File "/home/ajung/src/unibo/incronaca-plone6/eggs/transaction-3.1.0-py3.11.egg/transaction/_transaction.py", line 274, in commit
    self._commitResources()
  File "/home/ajung/src/unibo/incronaca-plone6/eggs/transaction-3.1.0-py3.11.egg/transaction/_transaction.py", line 457, in _commitResources
    reraise(t, v, tb)
  File "/home/ajung/src/unibo/incronaca-plone6/eggs/transaction-3.1.0-py3.11.egg/transaction/_compat.py", line 50, in reraise
    raise value
  File "/home/ajung/src/unibo/incronaca-plone6/eggs/transaction-3.1.0-py3.11.egg/transaction/_transaction.py", line 434, in _commitResources
    rm.tpc_vote(self)
  File "/home/ajung/src/unibo/incronaca-plone6/eggs/ZODB-5.8.1-py3.11.egg/ZODB/Connection.py", line 688, in tpc_vote
    s = vote(transaction)
        ^^^^^^^^^^^^^^^^^
  File "/home/ajung/src/unibo/incronaca-plone6/eggs/ZEO-5.4.1-py3.11.egg/ZEO/ClientStorage.py", line 846, in tpc_vote
    for oid in self._call('vote', id(txn)) or ():
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/ajung/src/unibo/incronaca-plone6/eggs/ZEO-5.4.1-py3.11.egg/ZEO/asyncio/client.py", line 883, in call
    return self.io_call(
           ^^^^^^^^^^^^^
  File "/home/ajung/src/unibo/incronaca-plone6/eggs/ZEO-5.4.1-py3.11.egg/ZEO/asyncio/client.py", line 862, in io_call
    return future.result() if wait else future
           ^^^^^^^^^^^^^^^
  File "/home/ajung/src/unibo/incronaca-plone6/eggs/ZEO-5.4.1-py3.11.egg/ZEO/asyncio/futures.py", line 230, in result
    return Future.result(self)
           ^^^^^^^^^^^^^^^^^^^
  File "/home/ajung/src/unibo/incronaca-plone6/eggs/ZEO-5.4.1-py3.11.egg/ZEO/asyncio/futures.py", line 81, in result
    raise self._result
  File "/home/ajung/src/unibo/incronaca-plone6/eggs/ZEO-5.4.1-py3.11.egg/ZEO/asyncio/futures.py", line 273, in step
    result = self.coro.throw(await_result)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/ajung/src/unibo/incronaca-plone6/eggs/ZEO-5.4.1-py3.11.egg/ZEO/asyncio/client.py", line 716, in call_sync_co
    _ = yield self.protocol.call_sync(method, args)
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/ajung/src/unibo/incronaca-plone6/eggs/ZEO-5.4.1-py3.11.egg/ZEO/asyncio/futures.py", line 259, in step
    await_result = awaiting.result()
                   ^^^^^^^^^^^^^^^^^
  File "/home/ajung/src/unibo/incronaca-plone6/eggs/ZEO-5.4.1-py3.11.egg/ZEO/asyncio/futures.py", line 81, in result
    raise self._result
ZEO.Exceptions.ServerException: ('builtins.FileNotFoundError', (2, 'No such file or directory'))

[icemac]

@d-maurer Do you have an idea what's going on here?

[zopyx]

After rebooting the system, the error has gone. It looks to me as two concurrent ZEO servers running/working on the same database...at least, I saw a stale ZEO process...not sure how this could happen 🤷🏻‍♂️ We can likely close this issue.

[icemac]

@zopyx Thank you for reporting back. I am closing the issue now.