Unable to use Run By Line first time when connecting to remote jupyter server

[DavidKutu]

Environment data

• Version: 1.61.0-insider (user setup)
• Commit: 5991e3c4b97eca5568069bf3e0910ab693ad3549
• Date: 2021-09-27T05:16:11.989Z
• Electron: 13.4.0
• Chrome: 91.0.4472.164
• Node.js: 14.16.0
• V8: 9.1.269.39-electron.0
• OS: Windows_NT x64 10.0.19043
• Jupyter ver: build from main
• Python ver: v2021.9.1246542782

Expected behaviour

Calling getSelectedNotebookController() returns the controller.

Actual behaviour

It returns undefined.

Steps to reproduce:

1. Open a notebook with a local kernel
2. Start a kernel outside of VS Code (python -m notebook)
3. Run the command to connect to a remote kernel
4. Paste your server link
5. Reload VS Code as usual
6. notebook affinity is not updated, and if we need the controller it returns undefined
7. Reload VS Code again
8. Now it works

[DonJayamanne]

Note: getSelectedNotebookController will only get updated after all controller have loaded and user has executed a cell.
Would be good to know at what point you are calling this API (i.e. where in the extnesion are we using this & what point in time).

notebook affinity is not updated, and if we need the controller it returns undefined

This will take time, as we need to wait for list of kernels to be fetched from remote server.

But again, it will always return undefined unless you run a cell.

[DavidKutu]

gotcha, this is happening just after reloading and opening a notebook, before running.

Maybe I'll disable debugging until a controller is found

[roblourens]

Seems ok at the moment