is it possible to update a cron workflow in argo via api ?

[vaisakh-prod]

I tried to update a workflow created via API by first fetching the current cron workflow and sending a PUT request using the response obtained via GET call(after only changing the workflow spec), is this the approach supported, where did i go wrong?
The following is the response

    "code": 13,
    "message": "runtime error: invalid memory address or nil pointer dereference"
}

[terrytangyuan]

Make sure the spec after you modified is still valid?

[vaisakh-prod]

hi @terrytangyuan, Yes it was a spec problem the JSON format where misformed !!
thanks for the help

[alexec]

You should never update cron workflow. It can result in the workflow not being scheduled.

[vaisakh-prod]

@alexec could you please help me understand the scenario where the workflow not being scheduled?

[alexec]

If the cron is changed is is removed and re-added to the scheduler. It if would have scheduled when that happen, it will not run.

[vaisakh-prod]

oh my!!, thanks for the info, I will keep that in mind

[willzhang]

v3.6.0 support argo cron update