dump_of_hanging_run.py

Thread 1 (idle): "MainThread"
    select (selectors.py:416)
    wait (multiprocessing/connection.py:931)
    _poll (multiprocessing/connection.py:424)
    poll (multiprocessing/connection.py:257)
    get (multiprocessing/queues.py:113)
    _poll_for_event (dagster/_core/executor/child_process_executor.py:106)
    execute_child_process_command (dagster/_core/executor/child_process_executor.py:162)
    execute_step_out_of_process (dagster/_core/executor/multiprocess.py:359)
    execute (dagster/_core/executor/multiprocess.py:248)
    job_execution_iterator (dagster/_core/execution/api.py:764)
    __iter__ (dagster/_core/execution/api.py:875)
    core_execute_run (dagster/_grpc/impl.py:152)
    _execute_run_command_body (dagster/_cli/api.py:118)
    execute_run_command (dagster/_cli/api.py:71)
    invoke (click/core.py:782)
    invoke (click/core.py:1434)
    invoke (click/core.py:1688)
    invoke (click/core.py:1688)
    main (click/core.py:1078)
    __call__ (click/core.py:1157)
    main (dagster/_cli/__init__.py:48)
    <module> (dagster:8)
Thread 12 (idle): "Thread-1 (worker)"
    worker (multiprocessing/pool.py:114)
    run (threading.py:953)
    _bootstrap_inner (threading.py:1016)
    _bootstrap (threading.py:973)
Thread 13 (idle): "Thread-2 (worker)"
    worker (multiprocessing/pool.py:114)
    run (threading.py:953)
    _bootstrap_inner (threading.py:1016)
    _bootstrap (threading.py:973)
Thread 14 (idle): "Thread-3 (worker)"
    worker (multiprocessing/pool.py:114)
    run (threading.py:953)
    _bootstrap_inner (threading.py:1016)
    _bootstrap (threading.py:973)
Thread 15 (idle): "Thread-4 (worker)"
    worker (multiprocessing/pool.py:114)
    run (threading.py:953)
    _bootstrap_inner (threading.py:1016)
    _bootstrap (threading.py:973)
Thread 16 (idle): "Thread-5 (_handle_workers)"
    select (selectors.py:416)
    wait (multiprocessing/connection.py:931)
    _wait_for_updates (multiprocessing/pool.py:502)
    _handle_workers (multiprocessing/pool.py:522)
    run (threading.py:953)
    _bootstrap_inner (threading.py:1016)
    _bootstrap (threading.py:973)
Thread 17 (idle): "Thread-6 (_handle_tasks)"
    _handle_tasks (multiprocessing/pool.py:531)
    run (threading.py:953)
    _bootstrap_inner (threading.py:1016)
    _bootstrap (threading.py:973)
Thread 18 (idle): "Thread-7 (_handle_results)"
    _handle_results (multiprocessing/pool.py:579)
    run (threading.py:953)
    _bootstrap_inner (threading.py:1016)
    _bootstrap (threading.py:973)