MSeal
commented
5 years ago Given you're on an old version of nbconvert I am guessing you're also on old versions of it'd dependencies. I do highly recommend upgrading versions and seeing if the issue goes away.
As a secondary possible issue, are you launching multiple nbconvert calls at the same time or have other kernels being launched simultaneously? There's some known race conditions that I've been helping track down. Upgrading your jupyter_client to the latest releast will eliminate one dead lock condition that can cause that message. Another is pending a PR merge/release in https://github.com/ipython/ipykernel/pull/412 . And the final fix in nbconvert is merged but waiting on the ipykernel PR before releasing which enables parallel processing over nbconvert (I don't think you're hitting this one atm).
theSuiGenerisAakash
Manoj-sahu
maartenbreddels
martinRenou
varunpatro
invisibleroads
ddj116
ManPython
yllgl
basnijholt
jeanmonet
i use nbconvert to convert notebook to html. occasionally may come to this error of "zmq.error.ZMQError: Address already in use" the full error stacktrace is [NbConvertApp] Executing notebook with kernel: python3 Traceback (most recent call last): File "/data/anaconda3/envs/jupyterhub/lib/python3.6/runpy.py", line 193, in _run_module_as_main "main", mod_spec) File "/data/anaconda3/envs/jupyterhub/lib/python3.6/runpy.py", line 85, in _run_code exec(code, run_globals) File "/data/anaconda3/envs/jupyterhub/lib/python3.6/site-packages/ipykernel_launcher.py", line 16, in
app.launch_new_instance()
File "/data/anaconda3/envs/jupyterhub/lib/python3.6/site-packages/traitlets/config/application.py", line 657, in launch_instance
app.initialize(argv)
File "", line 2, in initialize
File "/data/anaconda3/envs/jupyterhub/lib/python3.6/site-packages/traitlets/config/application.py", line 87, in catch_config_error
return method(app, *args, kwargs)
File "/data/anaconda3/envs/jupyterhub/lib/python3.6/site-packages/ipykernel/kernelapp.py", line 456, in initialize
self.init_sockets()
File "/data/anaconda3/envs/jupyterhub/lib/python3.6/site-packages/ipykernel/kernelapp.py", line 243, in init_sockets
self.stdin_port = self._bind_socket(self.stdin_socket, self.stdin_port)
File "/data/anaconda3/envs/jupyterhub/lib/python3.6/site-packages/ipykernel/kernelapp.py", line 180, in _bind_socket
s.bind("tcp://%s:%i" % (self.ip, port))
File "zmq/backend/cython/socket.pyx", line 495, in zmq.backend.cython.socket.Socket.bind
File "zmq/backend/cython/checkrc.pxd", line 25, in zmq.backend.cython.checkrc._check_rc
zmq.error.ZMQError: Address already in use
Traceback (most recent call last):
File "/data/anaconda3/envs/jupyterhub/bin/jupyter-nbconvert", line 11, in
sys.exit(main())
File "/data/anaconda3/envs/jupyterhub/lib/python3.6/site-packages/jupyter_core/application.py", line 266, in launch_instance
return super(JupyterApp, cls).launch_instance(argv=argv, kwargs)
File "/data/anaconda3/envs/jupyterhub/lib/python3.6/site-packages/traitlets/config/application.py", line 658, in launch_instance
app.start()
File "/data/anaconda3/envs/jupyterhub/lib/python3.6/site-packages/nbconvert/nbconvertapp.py", line 325, in start
self.convert_notebooks()
File "/data/anaconda3/envs/jupyterhub/lib/python3.6/site-packages/nbconvert/nbconvertapp.py", line 493, in convert_notebooks
self.convert_single_notebook(notebook_filename)
File "/data/anaconda3/envs/jupyterhub/lib/python3.6/site-packages/nbconvert/nbconvertapp.py", line 464, in convert_single_notebook
output, resources = self.export_single_notebook(notebook_filename, resources, input_buffer=input_buffer)
File "/data/anaconda3/envs/jupyterhub/lib/python3.6/site-packages/nbconvert/nbconvertapp.py", line 393, in export_single_notebook
output, resources = self.exporter.from_filename(notebook_filename, resources=resources)
File "/data/anaconda3/envs/jupyterhub/lib/python3.6/site-packages/nbconvert/exporters/exporter.py", line 174, in from_filename
return self.from_file(f, resources=resources, kw)
File "/data/anaconda3/envs/jupyterhub/lib/python3.6/site-packages/nbconvert/exporters/exporter.py", line 192, in from_file
return self.from_notebook_node(nbformat.read(file_stream, as_version=4), resources=resources, kw)
File "/data/anaconda3/envs/jupyterhub/lib/python3.6/site-packages/nbconvert/exporters/html.py", line 85, in from_notebook_node
return super(HTMLExporter, self).from_notebook_node(nb, resources, kw)
File "/data/anaconda3/envs/jupyterhub/lib/python3.6/site-packages/nbconvert/exporters/templateexporter.py", line 280, in from_notebook_node
nb_copy, resources = super(TemplateExporter, self).from_notebook_node(nb, resources, kw)
File "/data/anaconda3/envs/jupyterhub/lib/python3.6/site-packages/nbconvert/exporters/exporter.py", line 134, in from_notebook_node
nb_copy, resources = self._preprocess(nb_copy, resources)
File "/data/anaconda3/envs/jupyterhub/lib/python3.6/site-packages/nbconvert/exporters/exporter.py", line 311, in _preprocess
nbc, resc = preprocessor(nbc, resc)
File "/data/anaconda3/envs/jupyterhub/lib/python3.6/site-packages/nbconvert/preprocessors/base.py", line 47, in call
return self.preprocess(nb, resources)
File "/data/anaconda3/envs/jupyterhub/lib/python3.6/site-packages/nbconvert/preprocessors/execute.py", line 257, in preprocess
cwd=path)
File "/data/anaconda3/envs/jupyterhub/lib/python3.6/site-packages/nbconvert/preprocessors/execute.py", line 241, in start_new_kernel
kc.wait_for_ready(timeout=startup_timeout)
File "/data/anaconda3/envs/jupyterhub/lib/python3.6/site-packages/jupyter_client/blocking/client.py", line 120, in wait_for_ready
raise RuntimeError('Kernel died before replying to kernel_info')
RuntimeError: Kernel died before replying to kernel_info
since my job is a cron job by every hour, this error occurs or may not occur
Nbconvert version: 5.3.1