@Override
    public boolean equals(final Object obj) {
        if (obj == null || !(obj instanceof JobNodeTracker)) {
            return false;
        }

        final JobNodeTracker tracker = (JobNodeTracker) obj;
        return jobNode.equals(tracker.jobNode);
    }
Last time we actually executed a task for this job.
stroom-job/stroom-job-impl/src/main/java/stroom/job/impl/JobNodeTracker.java