Trying to initialize a client with local cluster in Jupyter lab but hangs. This behaviour happens for python 3.5 and jupyter lab 0.35.
import dask.dataframe as dd
from dask import delayed
from distributed import Client
from distributed import LocalCluster
import pandas as pd
import numpy as np
import json
cluster = LocalCluster()
client = Cluster(cluster)
client
versions of the tools :
Python 3.5.2 (default, Nov 23 2017, 16:37:01)
[GCC 5.4.0 20160609] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>>
And the jupyter lab version is
pip list |grep jupyter
jupyter 1.0.0
jupyter-client 5.2.3
jupyter-console 6.0.0
jupyter-core 4.4.0
jupyterlab 0.35.3
jupyterlab-server 0.2.0
Dask version
pip list |grep dask
dask 0.20.0
What could be wrong?
EDIT: No exception on the terminal while trying to initialize client Interrupting the Kernel gives the following exceptions: Inside jupyter:
distributed.nanny - ERROR - Failed to restart worker after its process exited
Traceback (most recent call last):
File "/home/avlach/virtualenvs/staistics3/lib/python3.5/site-packages/distributed/nanny.py", line 291, in _on_exit
yield self.instantiate()
File "/home/avlach/virtualenvs/staistics3/lib/python3.5/site-packages/tornado/gen.py", line 1133, in run
value = future.result()
File "/usr/lib/python3.5/asyncio/futures.py", line 274, in result
raise self._exception
File "/home/avlach/virtualenvs/staistics3/lib/python3.5/site-packages/tornado/gen.py", line 1141, in run
yielded = self.gen.throw(*exc_info)
File "/home/avlach/virtualenvs/staistics3/lib/python3.5/site-packages/distributed/nanny.py", line 226, in instantiate
self.process.start()
File "/home/avlach/virtualenvs/staistics3/lib/python3.5/site-packages/tornado/gen.py", line 1133, in run
value = future.result()
File "/usr/lib/python3.5/asyncio/futures.py", line 274, in result
raise self._exception
File "/home/avlach/virtualenvs/staistics3/lib/python3.5/site-packages/tornado/gen.py", line 1141, in run
yielded = self.gen.throw(*exc_info)
File "/home/avlach/virtualenvs/staistics3/lib/python3.5/site-packages/distributed/nanny.py", line 370, in start
yield self.process.start()
File "/home/avlach/virtualenvs/staistics3/lib/python3.5/site-packages/tornado/gen.py", line 1133, in run
value = future.result()
File "/usr/lib/python3.5/asyncio/futures.py", line 274, in result
raise self._exception
File "/home/avlach/virtualenvs/staistics3/lib/python3.5/site-packages/distributed/process.py", line 35, in _call_and_set_future
res = func(*args, **kwargs)
File "/home/avlach/virtualenvs/staistics3/lib/python3.5/site-packages/distributed/process.py", line 184, in _start
process.start()
File "/usr/lib/python3.5/multiprocessing/process.py", line 105, in start
self._popen = self._Popen(self)
File "/usr/lib/python3.5/multiprocessing/context.py", line 281, in _Popen
return Popen(process_obj)
File "/usr/lib/python3.5/multiprocessing/popen_forkserver.py", line 36, in __init__
super().__init__(process_obj)
File "/usr/lib/python3.5/multiprocessing/popen_fork.py", line 20, in __init__
self._launch(process_obj)
File "/usr/lib/python3.5/multiprocessing/popen_forkserver.py", line 52, in _launch
self.sentinel, w = forkserver.connect_to_new_process(self._fds)
File "/usr/lib/python3.5/multiprocessing/forkserver.py", line 66, in connect_to_new_process
client.connect(self._forkserver_address)
ConnectionRefusedError: [Errno 111] Connection refused
and on the terminal
Kernel interrupted: 1e7da6ed-2137-41ce-818e-3484c0a659cc
fd_event_list = self._epoll.poll(timeout, max_ev)
KeyboardInterrupt