code: def __init__(
      self,
      rendezvous,
      discovery,
      min_num_proc,
      max_num_proc,
      timeout=None,
      reset_limit=None,
      cooldown_range=None,
      verbose=0,
  ):
      self._rendezvous = rendezvous
      self._host_manager = HostManager(discovery, cooldown_range)
      self._min_num_proc = min_num_proc
      self._max_num_proc = max_num_proc
      self._verbose = verbose
  
      self._host_assignments = {}
      self._rank_assignments = {}
      self._world_size = 0
  
      self._wait_hosts_cond = threading.Condition()
      self._timeout = timeout or int(
          os.getenv("HOROVOD_ELASTIC_TIMEOUT", ELASTIC_TIMEOUT_SECS)
      )
  
      self._create_worker_fn = None
      self._worker_clients = {}
  
      self._worker_registry = WorkerStateRegistry(
          self, self._host_manager, reset_limit=reset_limit
      )
      self._results = ResultsRecorder()
      self._shutdown = threading.Event()
  
      self._discovery_thread = threading.Thread(
          target=self._discover_hosts
      )
      self._discovery_thread.daemon = True
      self._discovery_thread.start()
  
imports: import logging
  import os
  import queue
  import threading
  import time
  import warnings
  from collections import defaultdict
  from horovod.runner.common.util import hosts, timeout
  from horovod.runner.elastic.discovery import HostManager
  from horovod.runner.elastic.registration import WorkerStateRegistry
  from horovod.runner.elastic.worker import HostUpdateResult, WorkerNotificationClient
label_desc: Use image node_id 1 to create a new ElasticDriver object from inherited base classes: object with example: obj = ElasticDriver(rendezvous, discovery, min_num_proc, max_num_proc, timeout, reset_limit, cooldown_range, verbose)