void releaseUnstartableContainer(SamzaResourceRequest request, SamzaResource resource, String preferredHost,
      ResourceRequestState resourceRequestState) {
    resourceRequestState.releaseUnstartableContainer(resource, preferredHost);
    resourceRequestState.cancelResourceRequest(request);
  }
Release un-startable resources immediately and deletes requests corresponsing to it
samza-core/src/main/java/org/apache/samza/clustermanager/StandbyContainerManager.java