String getProcessorsPath() {
    return String.format("/%s/%s", pathPrefix, PROCESSORS_PATH);
  }
Prefix generated to uniquely identify a particular deployment of a job.
TODO: For now, it looks like $jobName-$jobId. We need to add a unique deployment/attempt identifier as well.
samza-core/src/main/java/org/apache/samza/zk/ZkKeyBuilder.java