timeout error on a large notebook (Collapsible headings do not show up anymore)

[foice]

Hi, as discussed in 822 I am stumbling in a problem of timeout when loading exetensions (Collapsible headings in my case) on load of a large notebook.

For small notebook the extension loads fine, only when the notebook has too many section to collapse I get a timeout error.

As suggested in 822 I have modified custom.js to add

 window.requirejs.config({
 waitseconds: 60,  // default is 30s
 });

but it did not help, tried to go bigger than 60 as well.

Any idea what to do to get Collapsible headings to work with this notebook?

[gnestor]

This sounds like it may be an issue with the implementation of the extension. I suggest that an issue be posted on its repo vs. notebook.

https://github.com/ipython-contrib/jupyter_contrib_nbextensions/blob/master/src/jupyter_contrib_nbextensions/nbextensions/collapsible_headings

Is this the extension you're using?

[gnestor]

Similar: #2030

[foice]

This sounds like it may be an issue with the implementation of the extension. I suggest that an issue be posted on its repo vs. notebook.

Thanks for your suggestion. The issue I was referring to, ipython-contrib/jupyter_contrib_nbextensions#822, is with the developer of the extension, who suggested to open an issue here.

Please let me know if I did not understand your message.

[jcb91]

Hi @gnestor so after some debugging, I had this failure to load as a result of timeouts occur even for minimal nbextensions which just log a single line to console on loading, so concluded it was a more generic problem. It's a while since I looked at it though, so I may be wrong...

[edit: I'm the developer of the nbextension in question, in case that wasn't clear]

[jcb91]

so, yes, I can get this to occur for the following nbextension:

define(function () {
  return {
    load_ipython_extension: function () { console.log('purdy!'); }
  };
});

given a large enough notebook, which for me seems to be ~ 500 cells (I used the notebook in this gist to make large numbers of cells).

notebook 4.3.0
Chrome 55.0.2883.87 m
on windows 8.1