Valentyn Tymofieiev <valen...@google.com> added the comment:
While investigating[1], I observe that certain unpickling operations, for example, Unpickler.find_class, remain not thread-safe in Python 3.7.5 and earlier versions that I tried. I have not tried 3.8, but cannot reproduce this error on Python 2. For example, attached find_class_deadlock.py which consistently fails with a deadlock on Python 3.7.5. I opened https://bugs.python.org/issue38884, which may be causing these errors, since the failure mode is similar, and in at least some codepaths, find_class seems to be calling __import__ [2]. [1] https://issues.apache.org/jira/browse/BEAM-8651 [2] https://github.com/python/cpython/blob/4ffc569b47bef9f95e443f3c56f7e7e32cb440c0/Lib/pickle.py#L1426. ---------- nosy: +Valentyn Tymofieiev _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue34572> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
