remove serializable as it does not make sense

src/main/java/com/commafeed/backend/StartupBean.java

@@ -7,6 +7,8 @@ import java.util.concurrent.Future;
 
 import javax.annotation.PostConstruct;
 import javax.annotation.PreDestroy;
+import javax.ejb.ConcurrencyManagement;
+import javax.ejb.ConcurrencyManagementType;
 import javax.ejb.Singleton;
 import javax.ejb.Startup;
 import javax.inject.Inject;
@@ -27,6 +29,7 @@ import com.google.api.client.util.Lists;
 
 @Startup
 @Singleton
+@ConcurrencyManagement(ConcurrencyManagementType.BEAN)
 public class StartupBean {
 
 	private static Logger log = LoggerFactory.getLogger(StartupBean.class);
@@ -65,8 +68,10 @@ public class StartupBean {
 		}
 
 		ApplicationSettings settings = applicationSettingsService.get();
+		log.info("Starting {} background threads",
+				settings.getBackgroundThreads());
 		for (int i = 0; i < settings.getBackgroundThreads(); i++) {
-			Future<Void> thread = worker.start();
+			Future<Void> thread = worker.start("Thread " + i);
 			threads.add(thread);
 		}
 

src/main/java/com/commafeed/backend/dao/ApplicationSettingsDAO.java

@@ -4,7 +4,6 @@ import javax.ejb.Stateless;
 
 import com.commafeed.backend.model.ApplicationSettings;
 
-@SuppressWarnings("serial")
 @Stateless
 public class ApplicationSettingsDAO extends GenericDAO<ApplicationSettings> {
 

src/main/java/com/commafeed/backend/dao/FeedCategoryDAO.java

@@ -15,7 +15,6 @@ import com.google.common.collect.Lists;
 import com.uaihebert.model.EasyCriteria;
 
 @Stateless
-@SuppressWarnings("serial")
 public class FeedCategoryDAO extends GenericDAO<FeedCategory> {
 
 	public List<FeedCategory> findAll(User user) {

src/main/java/com/commafeed/backend/dao/FeedDAO.java

@@ -20,7 +20,6 @@ import com.google.common.collect.Iterables;
 import com.uaihebert.model.EasyCriteria;
 
 @Stateless
-@SuppressWarnings("serial")
 public class FeedDAO extends GenericDAO<Feed> {
 
 	public List<Feed> findNextUpdatable(int count) {

src/main/java/com/commafeed/backend/dao/FeedEntryDAO.java

@@ -16,7 +16,6 @@ import com.google.api.client.util.Lists;
 import com.uaihebert.model.EasyCriteria;
 
 @Stateless
-@SuppressWarnings("serial")
 public class FeedEntryDAO extends GenericDAO<FeedEntry> {
 
 	public List<FeedEntry> findByGuids(List<String> guids) {

src/main/java/com/commafeed/backend/dao/FeedEntryStatusDAO.java

@@ -29,7 +29,6 @@ import com.google.api.client.util.Maps;
 import com.uaihebert.model.EasyCriteria;
 
 @Stateless
-@SuppressWarnings("serial")
 public class FeedEntryStatusDAO extends GenericDAO<FeedEntryStatus> {
 
 	public FeedEntryStatus findById(User user, Long id) {

src/main/java/com/commafeed/backend/dao/FeedSubscriptionDAO.java

@@ -14,7 +14,6 @@ import com.uaihebert.factory.EasyCriteriaFactory;
 import com.uaihebert.model.EasyCriteria;
 
 @Stateless
-@SuppressWarnings("serial")
 public class FeedSubscriptionDAO extends GenericDAO<FeedSubscription> {
 
 	public FeedSubscription findById(User user, Long id) {

src/main/java/com/commafeed/backend/dao/GenericDAO.java

@@ -1,6 +1,5 @@
 package com.commafeed.backend.dao;
 
-import java.io.Serializable;
 import java.util.Arrays;
 import java.util.List;
 
@@ -20,8 +19,7 @@ import com.uaihebert.factory.EasyCriteriaFactory;
 import com.uaihebert.model.EasyCriteria;
 
 @SuppressWarnings("serial")
-public abstract class GenericDAO<T extends AbstractModel> implements
+public abstract class GenericDAO<T extends AbstractModel> {
-		Serializable {
 
 	private TypeToken<T> type = new TypeToken<T>(getClass()) {
 	};

src/main/java/com/commafeed/backend/dao/UserDAO.java

@@ -10,7 +10,6 @@ import com.commafeed.backend.model.User;
 import com.commafeed.backend.model.User_;
 
 @Stateless
-@SuppressWarnings("serial")
 public class UserDAO extends GenericDAO<User> {
 
 	public User findByName(String name) {

src/main/java/com/commafeed/backend/dao/UserRoleDAO.java

@@ -11,7 +11,6 @@ import com.commafeed.backend.model.UserRole.Role;
 import com.commafeed.backend.model.UserRole_;
 import com.google.common.collect.Sets;
 
-@SuppressWarnings("serial")
 @Stateless
 public class UserRoleDAO extends GenericDAO<UserRole> {
 

src/main/java/com/commafeed/backend/dao/UserSettingsDAO.java

@@ -10,7 +10,6 @@ import com.uaihebert.factory.EasyCriteriaFactory;
 import com.uaihebert.model.EasyCriteria;
 
 @Stateless
-@SuppressWarnings("serial")
 public class UserSettingsDAO extends GenericDAO<UserSettings> {
 
 	public UserSettings findByUser(User user) {

src/main/java/com/commafeed/backend/feeds/FeedRefreshWorker.java

@@ -52,7 +52,8 @@ public class FeedRefreshWorker {
 	private boolean running = true;
 
 	@Asynchronous
-	public Future<Void> start() {
+	public Future<Void> start(String threadName) {
+		log.info("{} starting", threadName);
 		while (running) {
 			try {
 				Feed feed = getNextFeed();