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gh-88110: clear concurrent.futures.thread._threads_queues after fork#101940
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… forkThreads are gone after fork, so clear the queues too. Otherwise thechild process (here created via multiprocessing.Process) crashes oninterpreter exit with: Traceback (most recent call last): File "/usr/lib64/python3.11/multiprocessing/popen_fork.py", line 72, in _launch code = process_obj._bootstrap(parent_sentinel=child_r) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib64/python3.11/multiprocessing/process.py", line 332, in _bootstrap threading._shutdown() File "/usr/lib64/python3.11/threading.py", line 1561, in _shutdown atexit_call() File "/usr/lib64/python3.11/concurrent/futures/thread.py", line 31, in _python_exit t.join() File "/usr/lib64/python3.11/threading.py", line 1109, in join raise RuntimeError("cannot join current thread") RuntimeError: cannot join current threadFixespython#88110bedevere-bot commentedFeb 15, 2023
Most changes to Pythonrequire a NEWS entry. Please add it using theblurb_it web app or theblurb command-line tool. |
Could you please add tests@marmarek? |
closing in favor of#126098 which built upon this. |
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Threads are gone after fork, so clear the queues too. Otherwise the child process (here created via multiprocessing.Process) crashes on interpreter exit with: