从PyCharm运行modin.pandas时无法连接到Redis

编程问答 2022-06-07

问题描述

在Windows计算机上安装了modin（pip install modin [ray]）之后，我可以在jupyter笔记本上运行简单的示例，但是从PyCharm运行时失败。我遇到一个例外：无法连接到Redis。 有什么建议吗？

### Read in the data with Pandas
import pandas as pd

s = time.time()
df = pd.read_csv("esea_master_dmg_demos.part1.csv")
e = time.time()
print("Pandas Loading Time = {}".format(e-s))

### Read in the data with Modin
import modin.pandas as pd

s = time.time()
df = pd.read_csv("esea_master_dmg_demos.part1.csv")
e = time.time()
print("Modin Loading Time = {}".format(e-s))

Traceback (most recent call last):
  File "xxx\AppData\Local\Programs\Python\python38\lib\site-packages\IPython\core\interactiveshell.py",line 3417,in run_code
    exec(code_obj,self.user_global_ns,self.user_ns)
  File "<ipython-input-6-7e7b44bd7fd7>",line 1,in <module>
    import modin.pandas as pd
  File "C:\Program Files\JetBrains\PyCharm Community Edition 2020.2.1\plugins\python-ce\helpers\pydev\_pydev_bundle\pydev_import_hook.py",line 21,in do_import
    module = self._system_import(name,*args,**kwargs)
  File "xxx\AppData\Local\Programs\Python\python38\lib\site-packages\modin\pandas\__init__.py",line 182,in <module>
    execution_engine.subscribe(_update_engine)
  File "xxx\AppData\Local\Programs\Python\python38\lib\site-packages\modin\__init__.py",line 93,in subscribe
    callback(self)
  File "xxx\AppData\Local\Programs\Python\python38\lib\site-packages\modin\pandas\__init__.py",line 118,in _update_engine
    initialize_ray()
  File "xxx\AppData\Local\Programs\Python\python38\lib\site-packages\modin\engines\ray\utils.py",line 139,in initialize_ray
    ray.init(
  File "xxx\AppData\Local\Programs\Python\python38\lib\site-packages\ray\worker.py",line 696,in init
    _global_node = ray.node.Node(
  File "xxx\AppData\Local\Programs\Python\python38\lib\site-packages\ray\node.py",line 198,in __init__
    self.start_head_processes()
  File "xxx\AppData\Local\Programs\Python\python38\lib\site-packages\ray\node.py",line 800,in start_head_processes
    self.start_redis()
  File "xxx\AppData\Local\Programs\Python\python38\lib\site-packages\ray\node.py",line 568,in start_redis
    process_infos) = ray.services.start_redis(
  File "xxx\AppData\Local\Programs\Python\python38\lib\site-packages\ray\services.py",line 739,in start_redis
    port,p = _start_redis_instance(
  File "xxx\AppData\Local\Programs\Python\python38\lib\site-packages\ray\services.py",line 937,in _start_redis_instance
    wait_for_redis_to_start("127.0.0.1",port,password=password)
  File "xxx\AppData\Local\Programs\Python\python38\lib\site-packages\ray\services.py",line 552,in wait_for_redis_to_start
    raise RuntimeError("Unable to connect to Redis. If the Redis instance "
RuntimeError: Unable to connect to Redis. If the Redis instance is on a different machine,check that your firewall is configured properly.

解决方法

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modinpycharmpycharmpythonredisredis