tcollector daemon hangs and becomes unresponsive.

[xy-man]

tcollector/tcollector.py

Line 1268 in 6a40490

os.killpg(proc.pid, signum)

If kill (col.proc) command is failed, tcollector daemon hang with OSError: [Errno 3] No such process.
This situation occurs when the process is terminated before os.killpg is called.

I think, kill function maybe needs to be modified like follow:

def kill(proc, signum=signal.SIGTERM):          
  try:                                          
    os.killpg(proc.pid, signum)                 
  except:                                       
    LOG.info('already killed: %s', proc.pid)