damccorm commented on code in PR #40822:
URL: https://github.com/apache/beam/pull/40822#discussion_r4497378263
##########
sdks/python/apache_beam/utils/multi_process_shared.py:
##########
@@ -150,8 +152,22 @@ def release(self, proxy):
def unsafe_hard_delete(self):
with self.lock:
if self.initialied:
+ obj = self.obj
del self.obj
self.initialied = False
+ # When hard-deleting in a spawned server process that exits via
+ # os._exit(0), an in-flight RPC thread (e.g. a timed-out call) may
+ # still hold a stack reference to `obj`, preventing CPython from
+ # invoking `obj.__del__()` before `os._exit(0)`.
+ if (self._hard_delete_callback is not None and
+ sys.getrefcount(obj) > 2 and hasattr(type(obj), '__del__')):
+ try:
+ type(obj).__del__(obj)
Review Comment:
I got rid of this, resolving this and leaving the other thread open
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