Hi,
We store results from datastore queries in memcache with the query
as key and results as values. We started having issues with one of the
datastore models and I'm not sure if the issues is in our code or
something with memcache or with pickle. The relevant part of the stack
trace is:
entries = memcache.get(query)
File
"/base/alloc/tmpfs/dynamic_runtimes/python27g/f612b68945952bd1/python27/python27_lib/versions/1/google/appengine/api/memcache/__init__.py",
line 562, in get
results = rpc.get_result()
File
"/base/alloc/tmpfs/dynamic_runtimes/python27g/f612b68945952bd1/python27/python27_lib/versions/1/google/appengine/api/apiproxy_stub_map.py",
line 615, in get_result
return self.__get_result_hook(self)
File
"/base/alloc/tmpfs/dynamic_runtimes/python27g/f612b68945952bd1/python27/python27_lib/versions/1/google/appengine/api/memcache/__init__.py",
line 632, in __get_hook
returned_item.flags(), self._do_unpickle)
File
"/base/alloc/tmpfs/dynamic_runtimes/python27g/f612b68945952bd1/python27/python27_lib/versions/1/google/appengine/api/memcache/__init__.py",
line 273, in _decode_value
return do_unpickle(value)
File
"/base/alloc/tmpfs/dynamic_runtimes/python27g/f612b68945952bd1/python27/python27_lib/versions/1/google/appengine/api/memcache/__init__.py",
line 404, in _do_unpickle
return unpickler.load()
AttributeError: 'module' object has no attribute 'Project'
where 'Project' is a class Project(db.Model) and no recent deployments
to the serving version had been made in the last few months.
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