client: fix race condition between Storage.load() and invalidations
This fixes a bug that could manifest as follows: Traceback (most recent call last): File "neo/client/app.py", line 432, in load self._cache.store(oid, data, tid, next_tid) File "neo/client/cache.py", line 223, in store assert item.tid == tid, (item, tid) AssertionError: (<CacheItem oid='\x00\x00\x00\x00\x00\x00\x00\x01' tid='\x03\xcb\xc6\xca\xfd\xc7\xda\xee' next_tid='\x03\xcb\xc6\xca\xfd\xd8\t\x88' data='...' counter=1 level=1 expire=10000 prev=<...> next=<...>>, '\x03\xcb\xc6\xca\xfd\xd8\t\x88') The big changes in the threaded test framework are required because we need to reproduce a race condition between client threads and this conflicts with the serialization of epoll events (deadlock).
Showing