gh-136655: ensure cancelled futures are notified on process pool shutdown #140021
+52
−1
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At present when a process pool executor shuts down it is cancelling pending work items, but failing to notify any waiting threads. Fix this.
See also gh-109934, which is a similar bug in the thread pool executor.
ProcessPoolExecutor
fails to notify when called withshutdown(cancel_futures=True)
#136655