jobDefinition
The job definition used by this job. This value can be one of definition-name, definition-name:revision, or the Amazon Resource Name (ARN) for the job definition, with or without the revision (arn:aws:batch:<i>region</i>:<i>account</i>:job-definition/<i>definition-name</i>:<i>revision</i> , or arn:aws:batch:<i>region</i>:<i>account</i>:job-definition/<i>definition-name</i> ).
If the revision is not specified, then the latest active revision is used.