ElectoServer hangs

**dwlee** · 08-20-2008 10:02 AM

Hi,

I'm having a huge problem with ES. When I start up ES and log in with my first user it works fine. It does find the user from the database and the login handler will return back the ChainAction.OkAndContinue value. However, if I log in another user that does exists in the database as well, it hangs. The client doesn't get a response back from the server. Not sure if the message got lost or whatever. Anyway to determine whether the message did get sent to the client? Sometimes it'll work and both login will succeed but later on, one of the plugins eventually hangs as well.

Help!

Cheers,

**dwlee** · 08-20-2008 10:59 AM

Addition:
For some reason it seems to work on my local machine, everything is fine. But when I upload the files over to production server, there are alot of issues where it hangs alot.

**tcarr** · 08-20-2008 02:30 PM

Please provide the managed object portion of your Extension.xml (with the exact connection details removed). Also, are you remembering to close the connection when you are finished? That was a lesson it took me a while to learn myself.

**dwlee** · 08-20-2008 09:04 PM

Not sure what you mean by managed objects, but here is my Extension.xml. Is there a way to determine if the connections are closed properly? I developed the server using java and the client in actionscript. I dont think any where in the java code actually creates a connection. I'm the client (actionscript) developer, so i'm not sure how the connections are being managed there, I could get him to post something if you want to see.

Code:

<Extension>
	<Name>My_Extension</Name>
    <EventHandlers>
    	<LoginHandlers>
	        <LoginHandler>
	            LoginHandler
	            Java
	            com.my.extensions.handlers.LoginHandler</Path>
	        </LoginHandler>
        </LoginHandlers>
        <LogoutHandlers>
        	<LogoutHandler>
        		LogoutHandler
        		Java
        		com.my.extensions.handlers.LogoutHandler</Path>
        	</LogoutHandler>
		</LogoutHandlers>
    </EventHandlers>
    
    	
    		SingleGameManager
    		Java
    		com.my.extensions.plugins.SingleGamePluginManager</Path>
    	</Plugin>
    	
    		ChatManger
    		Java
    		com.my.extensions.plugins.ChatPluginManager</Path>
    		<Variables>
    			
    			<Variable name="schedule_interval" type="Integer">30</Variable>
    			
    			<!-- The number of time you want the schedulecallback to be called
    				Set -1 for infinite executions -->
    			<Variable name="number_of_execution" type="Integer">-1</Variable>
    			
    			
    			<Variable name="language_filter_name" type="String">DefaultExclusiveFilter</Variable>
			</Variables>
    	</Plugin>
    	
    		EmailManager
    		Java
    		com.my.extensions.plugins.EmailPluginManager</Path>
    	</Plugin>
    	
    		BuddyManager
    		Java
    		com.my.extensions.plugins.BuddyPluginManager</Path>
    	</Plugin>  
    	
    		CatalogManager
    		Java
    		com.my.extensions.plugins.CatalogPluginManager</Path>
    	</Plugin>  
    	
    		MyManager
    		Java
    		com.my.extensions.plugins.MyPluginManager</Path>
    	</Plugin>
    	
    		Tester
    		Java
    		com.my.extensions.plugins.tester.Tester</Path>
    	</Plugin>	
    </Plugins>
</Extension>

**dwlee** · 08-20-2008 11:37 PM

Some more details:
My hosting server for ES is on MediaTemple, which is under linux. When we restart ES or Apache things seems to be working, then it'll fail again. Not sure exactly what is going on. Network issues? XML Socket files?? No clue...

What does work is that I experience no problem when I run ES on my local machine under Windows. I experience no issues at all. Could there be some configuration problems? Maybe the message are always received correctly or sent correctly because it's on a local machine and never need to reach out to the Internet??

any ideas that I can use towards investigation will help greatly, thanks!

**dwlee** · 08-20-2008 11:56 PM

I'm also noticing this, not sure if it has any affect on it

[code]

-=-=-=-=-=-=-=-
Starting ElectroServer 4.0.4
Go to http://www.electro-server.com/ for the newest version.
-=-=-=-=-=-=-=-
Computer Information
Operating System: Linux
Operating System Architecture: i386
Processors Available: 4
Memory Available: 506Mb
-=-=-=-=-=-=-=-
Virtual Machine Information
Virtual Machine Vendor: Sun Microsystems Inc.
Virtual Machine Version: 1.6.0_03

......

2008-Aug-20 11:03:50:761 - INFO [Thread-30]: Initialize LoginHandler.
2008-Aug-20 11:03:50:763 - INFO [Thread-30]: Logout Handler initialized....
2008-Aug-20 11:03:53:840 - ERROR [Thread-30]: failed app
java.lang.OutOfMemoryError: PermGen space
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknow n Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$000(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at org.mortbay.jetty.webapp.WebAppClassLoader.loadCla ss(WebAppClassLoader.java:354)
at org.mortbay.jetty.webapp.WebAppClassLoader.loadCla ss(WebAppClassLoader.java:325)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Unk nown Source)
at java.lang.Class.getDeclaredConstructors(Unknown Source)
at org.apache.hivemind.service.impl.BuilderFactoryLog ic.getServiceConstructorsOfLength(BuilderFactoryLo gic.java:146)
at org.apache.hivemind.service.impl.BuilderFactoryLog ic.instantiateExplicitConstructorInstance(BuilderF actoryLogic.java:115)
at org.apache.hivemind.service.impl.BuilderFactoryLog ic.instantiateCoreServiceInstance(BuilderFactoryLo gic.java:109)
at org.apache.hivemind.service.impl.BuilderFactoryLog ic.createService(BuilderFactoryLogic.java:75)
at org.apache.hivemind.service.impl.BuilderFactory.cr eateCoreServiceImplementation(BuilderFactory.java: 42)
at org.apache.hivemind.impl.InvokeFactoryServiceConst ructor.constructCoreServiceImplementation(InvokeFa ctoryServiceConstructor.java:62)
at org.apache.hivemind.impl.servicemodel.AbstractServ iceModelImpl.constructCoreServiceImplementation(Ab stractServiceModelImpl.java:108)
at org.apache.hivemind.impl.servicemodel.PooledServic eModel.constructPooledService(PooledServiceModel.j ava:210)
at org.apache.hivemind.impl.servicemodel.PooledServic eModel.obtainPooledService(PooledServiceModel.java :186)
at org.apache.hivemind.impl.servicemodel.PooledServic eModel.getServiceImplementationForCurrentThread(Po oledServiceModel.java:170)
at $ISpecificationParser_11be149754e._service($ISpeci ficationParser_11be149754e.java)
at $ISpecificationParser_11be149754e.parseApplication Specification($ISpecificationParser_11be149754e.ja va)
at $ISpecificationParser_11be149754f.parseApplication Specification($ISpecificationParser_11be149754f.ja va)
at $ISpecificationParser_11be1497550.parseApplication Specification($ISpecificationParser_11be1497550.ja va)
at org.apache.tapestry.services.impl.ApplicationSpeci ficationInitializer.initialize(ApplicationSpecific ationInitializer.java:63)
at $ApplicationInitializer_11be1497544.initialize($Ap plicationInitializer_11be1497544.java)
at $ApplicationInitializer_11be1497543.initialize($Ap plicationInitializer_11be1497543.java)
at $ApplicationInitializer_11be1497547.initialize($Ap plicationInitializer_11be1497547.java)
2008-Aug-20 11:03:54:443 - ERROR [Thread-30]: failed org.mortbay.jetty.webapp.WebAppConte...badmin-1.0.war!/}
j

**dwlee** · 08-21-2008 12:10 AM

another thing we are noticing, maybe it's related to closing connections?? Upon logging out, I get this error message

Code:

2008-Aug-20 12:04:02:322 - ERROR [pool-1-thread-9]: Exception processing message LogOutMessage -id:5
java.lang.RuntimeException: Logging out but dropping only the current connection to the server is not supported
        at com.electrotank.electroserver4.servers.registry.transactions.LogOutTransaction.execute(LogOutTransaction.java:40)
        at com.electrotank.electroserver4.servers.registry.transactions.SinglePersonTransaction.execute(SinglePersonTransaction.java:23)
        at com.electrotank.electroserver4.servers.registry.transactions.SinglePersonTransaction.execute(SinglePersonTransaction.java:13)
        at com.electrotank.electroserver4.servers.registry.transactions.TransactionHandler.processMessage(TransactionHandler.java:168)
        at com.electrotank.electroserver4.servers.registry.GatewayIoHandler.messageReceived(GatewayIoHandler.java:224)
        at org.apache.mina.common.support.AbstractIoFilterChain$TailFilter.messageReceived(AbstractIoFilterChain.java:570)
        at org.apache.mina.common.support.AbstractIoFilterChain.callNextMessageReceived(AbstractIoFilterChain.java:299)
        at org.apache.mina.common.support.AbstractIoFilterChain.access$1100(AbstractIoFilterChain.java:53)
        at org.apache.mina.common.support.AbstractIoFilterChain$EntryImpl$1.messageReceived(AbstractIoFilterChain.java:648)
        at org.apache.mina.filter.executor.ExecutorFilter.processEvent(ExecutorFilter.java:219)
        at org.apache.mina.filter.executor.ExecutorFilter$ProcessEventsRunnable.run(ExecutorFilter.java:263)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)
2008-Aug-20 12:04:02:323 - ERROR [pool-1-thread-9]: Exception processing message LogOutMessage -id:5
com.electrotank.electroserver4.servers.registry.MessagingException: Exception processing message LogOutMessage -id:5
        at com.electrotank.electroserver4.servers.registry.transactions.TransactionHandler.processMessage(TransactionHandler.java:171)
        at com.electrotank.electroserver4.servers.registry.GatewayIoHandler.messageReceived(GatewayIoHandler.java:224)
        at org.apache.mina.common.support.AbstractIoFilterChain$TailFilter.messageReceived(AbstractIoFilterChain.java:570)
        at org.apache.mina.common.support.AbstractIoFilterChain.callNextMessageReceived(AbstractIoFilterChain.java:299)
        at org.apache.mina.common.support.AbstractIoFilterChain.access$1100(AbstractIoFilterChain.java:53)
        at org.apache.mina.common.support.AbstractIoFilterChain$EntryImpl$1.messageReceived(AbstractIoFilterChain.java:648)
        at org.apache.mina.filter.executor.ExecutorFilter.processEvent(ExecutorFilter.java:219)
        at org.apache.mina.filter.executor.ExecutorFilter$ProcessEventsRunnable.run(ExecutorFilter.java:263)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.RuntimeException: Logging out but dropping only the current connection to the server is not supported
        at com.electrotank.electroserver4.servers.registry.transactions.LogOutTransaction.execute(LogOutTransaction.java:40)
        at com.electrotank.electroserver4.servers.registry.transactions.SinglePersonTransaction.execute(SinglePersonTransaction.java:23)
        at com.electrotank.electroserver4.servers.registry.transactions.SinglePersonTransaction.execute(SinglePersonTransaction.java:13)
        at com.electrotank.electroserver4.servers.registry.transactions.TransactionHandler.processMessage(TransactionHandler.java:168)
        ... 10 more

**dwlee** · 08-22-2008 12:39 AM

Solved it. Apparently, we set the max thread pool to be 5 and I guess not enough threads to do the work. We increased it to a fairly large number and seems to be working fine. what's a good number to set it as? Please tell me it's not one thread per connection.

**tcarr** · 08-22-2008 04:56 PM

Where did you set the max thread pool to 5? (we need the context)

**dwlee** · 08-22-2008 09:41 PM

General Settings -> Edit Thread Settings -> Maximum Pool size from the web admin tool.

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