private void modifyCluster(final String jobName, final boolean enabled) {
        final FindJobCriteria criteria = new FindJobCriteria();
        criteria.getName().setString(jobName);
        final ResultPage<Job> jobs = jobDao.find(criteria);

        final Job job = jobs.getFirst();
        if (job != null) {
            job.setEnabled(enabled);
            AuditUtil.stamp(securityContext, job);
            jobDao.update(job);
        }
    }
Sets the command flag to start a job with this name on all nodes in the
cluster.

@param jobName The name of the job to start.
@return True if successful.
stroom-job/stroom-job-impl/src/main/java/stroom/job/impl/JobManagerImpl.java