@Override
        public String toString() {
            return "Cluster{" +
                   "name='" + name + '\'' +
                   ", documentBuckets=" + documentBuckets +
                   '}';
        }
Starts and tracks reprocessing of ready document types until done, or interrupted.
clustercontroller-reindexer/src/main/java/ai/vespa/reindexing/Reindexer.java