ipython sqlite errors

[Chirag Nagpal]

So today ipython notebook randomly stopped working for me on the nodes.

After a bit of troubleshooting, I discovered that ipython/jupyter uses
sqlite for storing notebook histories and sqlite over the NFS is not very
efficient, especially if your trying concurrent access to a single notebook
from multiple nodes.

Incase you are facing such issues a quick workaround is

$rm -rf ~/.local/share/jupyter/

or removing the file nbsignatures.db from wherever it is on your home.

I thought ill post this in public interest.



-- 

*Chirag Nagpal* Graduate Student, Language Technologies Institute
School of Computer Science
Carnegie Mellon University
cs.cmu.edu/~chiragn <http://cs.cmu.edu/%7Echiragn>
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