Error on ray.init()

[Yangtiancoder]

System information

• OS Platform and Distribution (e.g., Linux Ubuntu 16.04):Linux Ubuntu 16.04
• Ray installed from (source or binary):Latest wheel
• Ray version:0.5.3
• Python version:3.6.5

Describe the problem

When I run ray.init(), will report an error.

Source code / logs

demo like this

# 导入ray，并初始化执行环境
import ray
ray.init(use_raylet=True)

# 定义ray remote函数
@ray.remote
def hello():
    return "Hello world !"

# 异步执行remote函数，返回结果id
object_id = hello.remote()

# 同步获取计算结果
hello = ray.get(object_id)

# 输出计算结果
print (hello)

log like this,i didn't know why,can you help me,thanks

Process STDOUT and STDERR is being redirected to /tmp/raylogs/.
Waiting for redis server at 127.0.0.1:28701 to respond...
Waiting for redis server at 127.0.0.1:10021 to respond...
Starting the Plasma object store with 1.00 GB memory.

Traceback (most recent call last):
File "/home/yangtian/PycharmProjects/untitled/ministray.py", line 3, in
ray.init(use_raylet=True)
File "/home/yangtian/anaconda3/envs/py36/lib/python3.6/site-packages/ray/worker.py", line 1866, in init
use_raylet=use_raylet)
File "/home/yangtian/anaconda3/envs/py36/lib/python3.6/site-packages/ray/worker.py", line 1727, in _init
use_raylet=use_raylet)
File "/home/yangtian/anaconda3/envs/py36/lib/python3.6/site-packages/ray/worker.py", line 2165, in connect
worker.redis_client.hmset(b"Drivers:" + worker.worker_id, driver_info)
File "/home/yangtian/anaconda3/envs/py36/lib/python3.6/site-packages/ray/utils.py", line 387, in _wrapper
return orig_attr(*args, **kwargs)
File "/home/yangtian/anaconda3/envs/py36/lib/python3.6/site-packages/redis/client.py", line 2636, in hmset
return self.execute_command('HMSET', name, *items)
File "/home/yangtian/anaconda3/envs/py36/lib/python3.6/site-packages/redis/client.py", line 754, in execute_command
connection.send_command(*args)
File "/home/yangtian/anaconda3/envs/py36/lib/python3.6/site-packages/redis/connection.py", line 619, in send_command
self.send_packed_command(self.pack_command(*args))
File "/home/yangtian/anaconda3/envs/py36/lib/python3.6/site-packages/redis/connection.py", line 659, in pack_command
for arg in imap(self.encoder.encode, args):
File "/home/yangtian/anaconda3/envs/py36/lib/python3.6/site-packages/redis/connection.py", line 124, in encode
"byte, string or number first." % typename)
redis.exceptions.DataError: Invalid input of type: 'NoneType'. Convert to a byte, string or number first.

[robertnishihara]

Closing because I think this is the same issue as #3334. It should be fixed in the latest wheels as of #3379. Let me know if that's not the case.