[issue34037] asyncio: BaseEventLoop.close() shutdowns the executor without waiting causing leak of dangling threads

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:

This bug still occurs randomly on the CI. Example on AppVeyor:
https://ci.appveyor.com/project/python/cpython/builds/27209898

test_reader_callback (test.test_asyncio.test_events.SelectEventLoopTests) ... ok
test_remove_fds_after_closing (test.test_asyncio.test_events.SelectEventLoopTests) ... ok
test_run_in_executor (test.test_asyncio.test_events.SelectEventLoopTests) ... ok
test_run_in_executor_cancel (test.test_asyncio.test_events.SelectEventLoopTests) ... Warning -- threading_cleanup() failed to cleanup 1 threads (count: 1, dangling: 2)
Dangling thread: <Thread(ThreadPoolExecutor-19_0, started daemon 2728)>
Dangling thread: <_MainThread(MainThread, started 1916)>
ok

Any plan to reapply my change, or fix it?

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue34037>
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