damccorm opened a new issue, #27602:
URL: https://github.com/apache/beam/issues/27602
### What happened?
When setting always_proxy=True in multi_process_shared.py, releasing an
acquired model causes the following exception:
```
apache_beam/ml/inference/base_test.py:1023:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
apache_beam/ml/inference/base.py:788: in load
shared_handle.release(model_to_remove)
apache_beam/utils/multi_process_shared.py:255: in release
self._manager.release_singleton(self._tag, obj)
../../../.pyenv/versions/3.8.9/lib/python3.8/multiprocessing/managers.py:740:
in temp
token, exp = self._create(typeid, *args, **kwds)
../../../.pyenv/versions/3.8.9/lib/python3.8/multiprocessing/managers.py:625:
in _create
id, exposed = dispatch(conn, None, 'create', (typeid,)+args, kwds)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
c = <multiprocessing.connection.Connection object at 0x1244356a0>, id =
None, methodname = 'create'
args = ('release_singleton', '138c832ae04d4c1a9505cdfb1382d630',
<apache_beam.utils.multi_process_shared._AutoProxyWrapper object at
0x123fb1550>)
kwds = {}
def dispatch(c, id, methodname, args=(), kwds={}):
'''
Send a message to manager using connection `c` and return response
'''
c.send((id, methodname, args, kwds))
kind, result = c.recv()
if kind == '#RETURN':
return result
> raise convert_to_error(kind, result)
E multiprocessing.managers.RemoteError:
E
---------------------------------------------------------------------------
E Traceback (most recent call last):
E File
"/Users/dannymccormick/.pyenv/versions/3.8.9/lib/python3.8/multiprocessing/managers.py",
line 202, in handle_request
E request = c.recv()
E File
"/Users/dannymccormick/.pyenv/versions/3.8.9/lib/python3.8/multiprocessing/connection.py",
line 251, in recv
E return _ForkingPickler.loads(buf.getbuffer())
E File
"/Users/dannymccormick/beam/sdks/python/apache_beam/utils/multi_process_shared.py",
line 152, in __getattr__
E return getattr(self._proxyObject, name)
E File
"/Users/dannymccormick/beam/sdks/python/apache_beam/utils/multi_process_shared.py",
line 152, in __getattr__
E return getattr(self._proxyObject, name)
E File
"/Users/dannymccormick/beam/sdks/python/apache_beam/utils/multi_process_shared.py",
line 152, in __getattr__
E return getattr(self._proxyObject, name)
E [Previous line repeated 991 more times]
E RecursionError: maximum recursion depth exceeded
E
---------------------------------------------------------------------------
../../../.pyenv/versions/3.8.9/lib/python3.8/multiprocessing/managers.py:91:
RemoteError
```
### Issue Priority
Priority: 2 (default / most bugs should be filed as P2)
### Issue Components
- [X] Component: Python SDK
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