The job is being cancelled. From this state the job may only go to
either JOB_STATE_SUCCEEDED, JOB_STATE_FAILED or JOB_STATE_CANCELLED.
The job has expired.
The job failed.
The job has been stopped, and can be resumed.
The service is preparing to run the job.
The job has been just created or resumed and processing has not yet begun.
The job is in progress.
The job completed successfully.
The job state is unspecified.
The job is being updated. The job is only able to be updated at RUNNING
state; if the update operation succeeds, job goes back to RUNNING state; if
the update operation fails, the job goes back to RUNNING state with error
messages written to [ModelDeploymentMonitoringJob.partial_errors] field
if it is a ModelDeploymentMonitoringJob.