docstr: Attempts to reconnect the gRPC channel and resend outstanding
  requests. First, the server is pinged to see if the current channel
  still works. If the ping fails, then the current channel is closed
  and replaced with a new one.
  
  Once a working channel is available, a new request queue is made
  and filled with any outstanding requests to be resent to the server.
code: def _reconnect_channel(self) -> None:
      """
      Attempts to reconnect the gRPC channel and resend outstanding
      requests. First, the server is pinged to see if the current channel
      still works. If the ping fails, then the current channel is closed
      and replaced with a new one.
  
      Once a working channel is available, a new request queue is made
      and filled with any outstanding requests to be resent to the server.
      """
      try:
          # Ping the server to see if the current channel is reuseable, for
          # example if gRPC reconnected the channel on its own or if the
          # RPC error was transient and the channel is still open
          ping_succeeded = self.client_worker.ping_server(timeout=5)
      except grpc.RpcError:
          ping_succeeded = False
  
      if not ping_succeeded:
          # Ping failed, try refreshing the data channel
          logger.warning(
              "Encountered connection issues in the data channel. "
              "Attempting to reconnect."
          )
          try:
              self.client_worker._connect_channel(reconnecting=True)
          except ConnectionError:
              logger.warning("Failed to reconnect the data channel")
              raise
          logger.debug("Reconnection succeeded!")
  
      # Recreate the request queue, and resend outstanding requests
      with self.lock:
          self.request_queue = self._create_queue()
          for request in self.outstanding_requests.values():
              # Resend outstanding requests
              self.request_queue.put(request)
  
imports: import math
  import logging
  import queue
  import threading
  import warnings
  import grpc
  from collections import OrderedDict
  from typing import Any, Callable, Dict, TYPE_CHECKING, Optional, Union
  import ray.core.generated.ray_client_pb2
  import ray.core.generated.ray_client_pb2_grpc
  from ray.util.client.common import INT32_MAX, OBJECT_TRANSFER_CHUNK_SIZE, OBJECT_TRANSFER_WARNING_SIZE
  from ray.util.debug import log_once
label_desc: Use image node_id 10 for calling the DataClient obj's underlying member method code with example usage: obj._reconnect_channel() without return types