https://nalar.dev/tags/multiprocessing/ Recent content in Multiprocessing on Nalar Hugo en-us Wed, 09 Sep 2026 00:00:00 +0700 https://nalar.dev/stop-stuck-process-pools-with-python-314/ Wed, 09 Sep 2026 00:00:00 +0700 https://nalar.dev/stop-stuck-process-pools-with-python-314/ <p><code>ProcessPoolExecutor</code> is a convenient way to spread CPU-bound Python work across multiple processes. Most of the time, its normal shutdown behavior is exactly what an application wants: stop accepting work, let running tasks finish, and clean up worker processes.</p> <p>Some failures do not fit that model.</p> <p>A worker can become stuck in native code, wait indefinitely on an external resource, or execute a task whose runtime has exceeded the application&rsquo;s operational deadline. At that point, cancelling a <code>Future</code> may not stop work that is already running, and waiting for an orderly pool shutdown may take too long.</p>