code: def chunk_task(req: ray_client_pb2.DataRequest):
      """
      Chunks a client task. Doing this lazily is important with large arguments,
      since taking slices of bytes objects does a copy. This means if we
      immediately materialized every chunk of a large argument and inserted them
      into the result_queue, we would effectively double the memory needed
      on the client to handle the task.
      """
      # When accessing a protobuf field, deserialization is performed, which will
      # generate a copy. So we need to avoid accessing the `data` field multiple
      # times in the loop
      request_data = req.task.data
      total_size = len(request_data)
      assert total_size > 0, "Cannot chunk object with missing data"
      total_chunks = math.ceil(total_size / OBJECT_TRANSFER_CHUNK_SIZE)
      for chunk_id in range(0, total_chunks):
          start = chunk_id * OBJECT_TRANSFER_CHUNK_SIZE
          end = min(
              total_size, (chunk_id + 1) * OBJECT_TRANSFER_CHUNK_SIZE
          )
          chunk = ray_client_pb2.ClientTask(
              type=req.task.type,
              name=req.task.name,
              payload_id=req.task.payload_id,
              client_id=req.task.client_id,
              options=req.task.options,
              baseline_options=req.task.baseline_options,
              namespace=req.task.namespace,
              data=request_data[start:end],
              chunk_id=chunk_id,
              total_chunks=total_chunks,
          )
          yield ray_client_pb2.DataRequest(
              req_id=req.req_id, task=chunk
          )
  
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 2 for calling a global function with example usage: chunk_task(req) without return types