Program: 116610
Project: 116610
Buggy source:
private void addEventListeners(){
  tenantEventReceiver.addEventListener(new CompleteTenantEventListener(){
    @Override protected void onEvent(    Event event){
      CompleteTenantEvent completeTenantEvent=(CompleteTenantEvent)event;
      if (log.isDebugEnabled()) {
        log.debug("String_Node_Str");
      }
      for (      Tenant tenant : completeTenantEvent.getTenants()) {
        for (        Subscription subscription : tenant.getSubscriptions()) {
          if (isMultiTenantService(subscription.getServiceName())) {
            LoadBalancerContextUtil.addClustersAgainstHostNamesAndTenantIds(subscription.getServiceName(),tenant.getTenantId(),subscription.getClusterIds());
          }
          LoadBalancerContextUtil.addClustersAgainstDomains(subscription.getServiceName(),subscription.getClusterIds(),subscription.getDomains());
        }
      }
    }
  }
);
  tenantEventReceiver.addEventListener(new TenantSubscribedEventListener(){
    @Override protected void onEvent(    Event event){
      TenantSubscribedEvent tenantSubscribedEvent=(TenantSubscribedEvent)event;
      if (log.isDebugEnabled()) {
        log.debug(String.format("String_Node_Str",tenantSubscribedEvent.getTenantId(),tenantSubscribedEvent.getServiceName(),tenantSubscribedEvent.getClusterIds()));
      }
      if (isMultiTenantService(tenantSubscribedEvent.getServiceName())) {
        LoadBalancerContextUtil.addClustersAgainstHostNamesAndTenantIds(tenantSubscribedEvent.getServiceName(),tenantSubscribedEvent.getTenantId(),tenantSubscribedEvent.getClusterIds());
      }
      LoadBalancerContextUtil.addClustersAgainstDomains(tenantSubscribedEvent.getServiceName(),tenantSubscribedEvent.getClusterIds(),tenantSubscribedEvent.getDomains());
    }
  }
);
  tenantEventReceiver.addEventListener(new TenantUnSubscribedEventListener(){
    @Override protected void onEvent(    Event event){
      TenantUnSubscribedEvent tenantUnSubscribedEvent=(TenantUnSubscribedEvent)event;
      if (log.isDebugEnabled()) {
        log.debug(String.format("String_Node_Str",tenantUnSubscribedEvent.getTenantId(),tenantUnSubscribedEvent.getServiceName(),tenantUnSubscribedEvent.getClusterIds()));
      }
      if (isMultiTenantService(tenantUnSubscribedEvent.getServiceName())) {
        LoadBalancerContextUtil.removeClustersAgainstHostNamesAndTenantIds(tenantUnSubscribedEvent.getServiceName(),tenantUnSubscribedEvent.getTenantId(),tenantUnSubscribedEvent.getClusterIds());
      }
      LoadBalancerContextUtil.removeClustersAgainstAllDomains(tenantUnSubscribedEvent.getServiceName(),tenantUnSubscribedEvent.getTenantId(),tenantUnSubscribedEvent.getClusterIds());
    }
  }
);
  tenantEventReceiver.addEventListener(new SubscriptionDomainsAddedEventListener(){
    @Override protected void onEvent(    Event event){
      SubscriptionDomainsAddedEvent subscriptionDomainsAddedEvent=(SubscriptionDomainsAddedEvent)event;
      if (log.isDebugEnabled()) {
        log.debug(String.format("String_Node_Str" + "String_Node_Str",subscriptionDomainsAddedEvent.getTenantId(),subscriptionDomainsAddedEvent.getServiceName(),subscriptionDomainsAddedEvent.getClusterIds(),subscriptionDomainsAddedEvent.getDomains()));
      }
      LoadBalancerContextUtil.addClustersAgainstDomains(subscriptionDomainsAddedEvent.getServiceName(),subscriptionDomainsAddedEvent.getClusterIds(),subscriptionDomainsAddedEvent.getDomains());
    }
  }
);
  tenantEventReceiver.addEventListener(new SubscriptionDomainsRemovedEventListener(){
    @Override protected void onEvent(    Event event){
      SubscriptionDomainsRemovedEvent subscriptionDomainsRemovedEvent=(SubscriptionDomainsRemovedEvent)event;
      if (log.isDebugEnabled()) {
        log.debug(String.format("String_Node_Str" + "String_Node_Str",subscriptionDomainsRemovedEvent.getTenantId(),subscriptionDomainsRemovedEvent.getServiceName(),subscriptionDomainsRemovedEvent.getClusterIds(),subscriptionDomainsRemovedEvent.getDomains()));
      }
      LoadBalancerContextUtil.removeClustersAgainstDomains(subscriptionDomainsRemovedEvent.getServiceName(),subscriptionDomainsRemovedEvent.getClusterIds(),subscriptionDomainsRemovedEvent.getDomains());
    }
  }
);
}

Fixed version (ground truth):
private void addEventListeners(){
  tenantEventReceiver.addEventListener(new CompleteTenantEventListener(){
    private boolean initialized;
    @Override protected void onEvent(    Event event){
      if (!initialized) {
        CompleteTenantEvent completeTenantEvent=(CompleteTenantEvent)event;
        if (log.isDebugEnabled()) {
          log.debug("String_Node_Str");
        }
        for (        Tenant tenant : completeTenantEvent.getTenants()) {
          for (          Subscription subscription : tenant.getSubscriptions()) {
            if (isMultiTenantService(subscription.getServiceName())) {
              LoadBalancerContextUtil.addClustersAgainstHostNamesAndTenantIds(subscription.getServiceName(),tenant.getTenantId(),subscription.getClusterIds());
            }
            LoadBalancerContextUtil.addClustersAgainstDomains(subscription.getServiceName(),subscription.getClusterIds(),subscription.getDomains());
          }
        }
        initialized=true;
      }
    }
  }
);
  tenantEventReceiver.addEventListener(new TenantSubscribedEventListener(){
    @Override protected void onEvent(    Event event){
      TenantSubscribedEvent tenantSubscribedEvent=(TenantSubscribedEvent)event;
      if (log.isDebugEnabled()) {
        log.debug(String.format("String_Node_Str",tenantSubscribedEvent.getTenantId(),tenantSubscribedEvent.getServiceName(),tenantSubscribedEvent.getClusterIds()));
      }
      if (isMultiTenantService(tenantSubscribedEvent.getServiceName())) {
        LoadBalancerContextUtil.addClustersAgainstHostNamesAndTenantIds(tenantSubscribedEvent.getServiceName(),tenantSubscribedEvent.getTenantId(),tenantSubscribedEvent.getClusterIds());
      }
      LoadBalancerContextUtil.addClustersAgainstDomains(tenantSubscribedEvent.getServiceName(),tenantSubscribedEvent.getClusterIds(),tenantSubscribedEvent.getDomains());
    }
  }
);
  tenantEventReceiver.addEventListener(new TenantUnSubscribedEventListener(){
    @Override protected void onEvent(    Event event){
      TenantUnSubscribedEvent tenantUnSubscribedEvent=(TenantUnSubscribedEvent)event;
      if (log.isDebugEnabled()) {
        log.debug(String.format("String_Node_Str",tenantUnSubscribedEvent.getTenantId(),tenantUnSubscribedEvent.getServiceName(),tenantUnSubscribedEvent.getClusterIds()));
      }
      if (isMultiTenantService(tenantUnSubscribedEvent.getServiceName())) {
        LoadBalancerContextUtil.removeClustersAgainstHostNamesAndTenantIds(tenantUnSubscribedEvent.getServiceName(),tenantUnSubscribedEvent.getTenantId(),tenantUnSubscribedEvent.getClusterIds());
      }
      LoadBalancerContextUtil.removeClustersAgainstAllDomains(tenantUnSubscribedEvent.getServiceName(),tenantUnSubscribedEvent.getTenantId(),tenantUnSubscribedEvent.getClusterIds());
    }
  }
);
  tenantEventReceiver.addEventListener(new SubscriptionDomainsAddedEventListener(){
    @Override protected void onEvent(    Event event){
      SubscriptionDomainsAddedEvent subscriptionDomainsAddedEvent=(SubscriptionDomainsAddedEvent)event;
      if (log.isDebugEnabled()) {
        log.debug(String.format("String_Node_Str" + "String_Node_Str",subscriptionDomainsAddedEvent.getTenantId(),subscriptionDomainsAddedEvent.getServiceName(),subscriptionDomainsAddedEvent.getClusterIds(),subscriptionDomainsAddedEvent.getDomains()));
      }
      LoadBalancerContextUtil.addClustersAgainstDomains(subscriptionDomainsAddedEvent.getServiceName(),subscriptionDomainsAddedEvent.getClusterIds(),subscriptionDomainsAddedEvent.getDomains());
    }
  }
);
  tenantEventReceiver.addEventListener(new SubscriptionDomainsRemovedEventListener(){
    @Override protected void onEvent(    Event event){
      SubscriptionDomainsRemovedEvent subscriptionDomainsRemovedEvent=(SubscriptionDomainsRemovedEvent)event;
      if (log.isDebugEnabled()) {
        log.debug(String.format("String_Node_Str" + "String_Node_Str",subscriptionDomainsRemovedEvent.getTenantId(),subscriptionDomainsRemovedEvent.getServiceName(),subscriptionDomainsRemovedEvent.getClusterIds(),subscriptionDomainsRemovedEvent.getDomains()));
      }
      LoadBalancerContextUtil.removeClustersAgainstDomains(subscriptionDomainsRemovedEvent.getServiceName(),subscriptionDomainsRemovedEvent.getClusterIds(),subscriptionDomainsRemovedEvent.getDomains());
    }
  }
);
}