ashb commented on PR #64995:
URL: https://github.com/apache/airflow/pull/64995#issuecomment-4222991242

   
https://github.com/giampaolo/psutil/blob/v7.1.0/psutil/_pslinux.py#L1645-L1651:
   
   ```python
               self._raise_if_zombie()
               # /proc/PID directory may still exist, but the files within
               # it may not, indicating the process is gone, see:
               # https://github.com/giampaolo/psutil/issues/2418
               if not os.path.exists(f"{self._procfs_path}/{pid}/stat"):
                   raise NoSuchProcess(pid, name) from err
               raise
   ```
   I think this is where the exception is coming from. 
   
   I wonder if this could be caused by something kube/containerd and a procfs 
proxy/causing a delay. I couldn't find any other reports about this
   
   If that is the case I think I'd rather we do something like
   
   ```python
   try:
     proc = psutil.Process(pid)
   except psutil.ProcessNotFound:
     time.sleep(0.1)
     proc = psutil.Process(pid)
   ```


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