Completed means the digjob does not have any active pod and has success pods.

Failed means the digjob does not have any active or success pod and has fpods that failed.

Running means the digjob has active pods.

Unknown means that for some reason we do not have the information to determine the status.

Client ...

Job contains info needed to create the job responsible for digging stuff.

Status is a label for the running status of a dig job at the current time.