Cannot use optional with input artifacts/S3

[alexec]

Checklist:

• I've included the version. - master
• I've included reproduction steps.
• I've included the workflow YAML.
• I've included the logs.

What happened:

Started a step with an input artifact where the bucket does not exist, step failed.

What you expected to happen:

Artifact was marked optional - should pass.

How to reproduce it (as minimally and precisely as possible):

Anything else we need to know?:

Environment:

• Argo version:

$ argo version

• Kubernetes version :

$ kubectl version -o yaml

Other debugging information (if applicable):

• workflow result:

argo --loglevel DEBUG get <workflowname>

• executor logs:

kubectl logs <failedpodname> -c init
kubectl logs <failedpodname> -c wait

• workflow-controller logs:

kubectl logs -n argo $(kubectl get pods -l app=workflow-controller -n argo -o name)

Logs

argo get <workflowname>
kubectl logs <failedpodname> -c init
kubectl logs <failedpodname> -c wait
kubectl logs -n argo $(kubectl get pods -l app=workflow-controller -n argo -o name)

---

Message from the maintainers:

If you are impacted by this bug please add a 👍 reaction to this issue! We often sort issues this way to know what to prioritize.