private static Optional<Startpoint> resolveStartpointPrecendence(Optional<Startpoint> startpoint1, Optional<Startpoint> startpoint2) {
    if (startpoint1.isPresent() && startpoint2.isPresent()) {
      // if SSP-only and SSP+taskName startpoints both exist, resolve to the one with the latest timestamp
      if (startpoint1.get().getCreationTimestamp() > startpoint2.get().getCreationTimestamp()) {
        return startpoint1;
      }
      return startpoint2;
    }
    return startpoint1.isPresent() ? startpoint1 : startpoint2;
  }
Deletes all fanned out {@link Startpoint}s
samza-core/src/main/java/org/apache/samza/startpoint/StartpointManager.java