Bug#880245: ipython/jupyter issue [Was: RuntimeError: Kernel died before replying to kernel_info (#4116)]

[Andreas Tille]

Hi,

On Thu, Nov 09, 2017 at 08:48:02PM +0100, Gordon Ball wrote:
> 
> I just built statsmodels 0.8.0-6 in and amd64 sbuild chroot without
> encountering this issue.
> 
> Looking at the trace in #880245, it looks like the key error is
> 
>     zmq.error.ZMQError: Address already in use
> 
> and the other
> 
>     RuntimeError: Kernel died before replying to kernel_info
> 
> are just caused by the other process not being able to communicate. My
> guess is that this is an environment heisenbug - container network
> issues/socket exhaustion...

IMHO this would be a good reason to lower the severity of the bug, isn't
it?
 
> It might be possible to get `ExecutePreprocessor` in
> `tools/nbgenerate.py` to use IPC instead of TCP transport, which might
> be more reliable for this sort of use (although it probably doesn't get
> tested as much, so might have its own problems); this is a supported
> option when invoking some CLI tools (eg, `jupyter console --transport
> ipc --kernel python3`), but it's not obvious to me how to do it in this
> case.

Any further hits?

Kind regards

     Andreas. 

-- 
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