def METHOD_NAME(self):
    if self._is_external:
        return
    if REDIS_DEBUGGER:
        debugger = REDIS_DEBUGGER.split()
        args = debugger + self.args
    else:
        args = self.args
    stdout = None if REDIS_SHOW_OUTPUT else subprocess.PIPE
    if REDIS_SHOW_OUTPUT:
        sys.stderr.write("Executing: {}".format(repr(args)))
    self.process = subprocess.Popen(
        args,
        stdin=sys.stdin,
        stdout=stdout,
        # stderr=sys.stderr,
    )
    begin = time.time()
    while True:
        try:
            self.client().ping()
            break
        except (redis.ConnectionError, redis.ResponseError):
            self.process.poll()
            if self.process.returncode is not None:
                raise RuntimeError(
                    "Process has exited with code {}\n. Redis output: {}"
                    .format(self.process.returncode, self._get_output()))
            if time.time() - begin > 300:
                raise RuntimeError('Cannot initialize client (waited 5mins)')
            time.sleep(0.1)