Google ML Engine - How to properly terminate a Datalab session

Question

I tried to follow this guide using the Cloud Shell: https://cloud.google.com/ml-engine/docs/quickstarts/datalab, but when I was going to stop my session I couldn't avoid getting an error.

Everything works fine until the clean up part. Then I close the Datalab browser tab and press CTRL + C in the Cloud Shell. This error is reported in the Cloud Shell:

ERROR: gcloud crashed (OSError): [Errno 3] No such process.

Then I press CTRL + C again and get back to the prompt from where I can call

datalab stop <instance-name>

Later it works to connect again by calling datlab connect <instance-name>

Could someone please tell me what I'm doing wrong here? How can I properly terminate the Datalab session without producing an error?

UPDATE:

After some trial and error I found out that one should not consider using CTRL + Z followed by something like bg, ps -e, kill <pid> where pid is the process id for the datalab process. Because there are several processes involved and killing only the datalab process will leave the Cloud Shell crippled. One will then have to restart the Cloud Shell VM.

Answer 1

It looks like this is a recent issue with the latest versions of the Cloud SDK.

I've created this issue to track it.

However, in the meantime the way you are terminating the session is the one you want to use; it will just generate spurious error messages that you can ignore.