private InstancesResult doJobAction(
      JobAction action,
      Entity entity,
      Date start,
      Date end,
      Properties props,
      List<LifeCycle> lifeCycles,
      boolean isForced)
      throws FalconException {
    Set<String> clusters = EntityUtil.getClustersDefinedInColos(entity);
    List<String> clusterList = getIncludedClusters(props, FALCON_INSTANCE_ACTION_CLUSTERS);
    APIResult.Status overallStatus = APIResult.Status.SUCCEEDED;
    int instanceCount = 0;

    Collection<InstanceState.STATE> states;
    switch (action) {
      case KILL:
      case SUSPEND:
        states = InstanceState.getActiveStates();
        break;
      case RESUME:
        states = new ArrayList<>();
        states.add(InstanceState.STATE.SUSPENDED);
        break;
      case PARAMS:
        // Applicable only for running and finished jobs.
        states = InstanceState.getRunningStates();
        states.addAll(InstanceState.getTerminalStates());
        states.add(InstanceState.STATE.SUSPENDED);
        break;
      case STATUS:
        states = InstanceState.getActiveStates();
        states.addAll(InstanceState.getTerminalStates());
        states.add(InstanceState.STATE.SUSPENDED);
        break;
      case RERUN:
        // Applicable only for terminated States
        states = InstanceState.getTerminalStates();
        break;
      default:
        throw new IllegalArgumentException("Unhandled action " + action);
    }

    List<ExecutionInstance> instancesToActOn = new ArrayList<>();
    for (String cluster : clusters) {
      if (clusterList.size() != 0 && !clusterList.contains(cluster)) {
        continue;
      }
      LOG.debug("Retrieving instances for cluster : {} for action {}", cluster, action);
      Collection<InstanceState> instances =
          STATE_STORE.getExecutionInstances(
              entity, cluster, states, new DateTime(start), new DateTime(end));
      for (InstanceState state : instances) {
        instancesToActOn.add(state.getInstance());
      }
    }

    // To ensure compatibility with OozieWorkflowEngine.
    // Also because users would like to see the most recent instances first.
    sortInstancesDescBySequence(instancesToActOn);

    List<InstancesResult.Instance> instances = new ArrayList<>();
    for (ExecutionInstance ins : instancesToActOn) {
      instanceCount++;
      String instanceTimeStr = SchemaHelper.formatDateUTC(ins.getInstanceTime().toDate());

      InstancesResult.Instance instance = null;
      try {
        instance = performAction(ins.getCluster(), entity, action, ins, props, isForced);
        instance.instance = instanceTimeStr;
      } catch (FalconException e) {
        LOG.warn("Unable to perform action {} on cluster", action, e);
        instance = new InstancesResult.Instance(ins.getCluster(), instanceTimeStr, null);
        instance.status = InstancesResult.WorkflowStatus.ERROR;
        instance.details = e.getMessage();
        overallStatus = APIResult.Status.PARTIAL;
      }
      instances.add(instance);
    }
    if (instanceCount < 2 && overallStatus == APIResult.Status.PARTIAL) {
      overallStatus = APIResult.Status.FAILED;
    }
    InstancesResult instancesResult = new InstancesResult(overallStatus, action.name());
    instancesResult.setInstances(instances.toArray(new InstancesResult.Instance[instances.size()]));
    return instancesResult;
  }