Kernel not chosen or kernel choice not explicitly saved results in Job creation error

[andrii-i]

Description

When job is created immediately after Notebook is created kernel (metadata field nb.metadata.kernelspec["name"]) is sometimes not set which results in failure to create a job.

When user creates a notebook, he gets "choose kernel" popup. After choice in the popup is made, user needs to explicitly save the notebook (answering "Rename?" dialog on the way) to actually set the kernel.

Reproduce

1. Create new notebook in jupyterlab
2. Select kernel in the popup window
3. Populate some cells
4. Attempt to create a job for this notebook
5. Note that job creation results in failure with kernelspec error

Expected behavior

Kernel is set upon selection in popup window upon creation of notebook OR more meaningful error message is provided on job creation fail that helps user to diagnose and remedy the error (something like "kernel is not set for Mynotebook.ipynb notebook, make sure you chose a kernel and saved a notebook after selection")

[ellisonbg]

Should we allow users to pick a kernel in Additional options if one is not in the notebook?

…

On Thu, Oct 27, 2022 at 12:06 PM Andrii Ieroshenko ***@***.***> wrote: Description When job is created immediately after Notebook is created kernel (metadata field nb.metadata.kernelspec["name"]) is sometimes not set which results in failure to create a job. When user creates a notebook, he gets "choose kernel for notebook" popup. After choice in the popup is made, user needs to explicitly save the notebook (answering "Rename?" dialog on the way) to actually set the kernel. Reproduce 1. Create new notebook in jupyterlab 2. Select kernel in the popup window 3. Populate some cells 4. Attempt to create a job for this notebook 5. Note that job creation results in failure with kernelspec error Expected behavior Kernel is set upon selection in popup window upon creation of notebook OR more meaningful error message is provided on job creation fail that helps user to diagnose and remedy the error (something like "kernel is not set for Mynotebook.ipynb notebook, make sure you chose a kernel and saved a notebook after selection") [image: kernel_not_set] <https://user-images.githubusercontent.com/26686070/198374353-7daae802-4df4-4455-ac96-7efbabc1e22a.gif> — Reply to this email directly, view it on GitHub <#215>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAAGXUGPZUZTYYHFS74SQ2LWFLHD5ANCNFSM6AAAAAARQLWF4A> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

-- Brian E. Granger Senior Principal Technologist, AWS AI/ML ***@***.***) On Leave - Professor of Physics and Data Science, Cal Poly @ellisonbg on GitHub

[andrii-i]

Should we allow users to pick a kernel in Additional options if one is not in the notebook?

I think it would be very helpful, especially in combination with descriptive error message

[andrii-i]

when the user clicks on the “Create Notebook Job” icon in the notebook toolbar or context menu items should we trigger a document save”

-solution proposed by @ellisonbg