[jboss-jira] [JBoss JIRA] Commented: (JBMESSAGING-1763) Bisocket connection won't be closed if pulling out the ethernet cable between client and server. The failure detection code won't close the failure connection, as a result, the subsequent requests will hang after connection account exceeds the threshold

Fri Apr 23 01:15:11 EDT 2010

    [ https://jira.jboss.org/jira/browse/JBMESSAGING-1763?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12527202#action_12527202 ] 

mingjun jiang commented on JBMESSAGING-1763:
--------------------------------------------

Howard,

I compare your remoting config with mine, I found your config has additional settings as following:

<attribute name="failureDisconnectTimeout" isParam="true">0</attribute>
<attribute name="callbackErrorsAllowed">1</attribute>
<attribute name="useClientConnectionIdentity" isParam="true">true</attribute>

These 3 attributes are introduced in Remoting 2.5.2, right? Because we  were using Remoting 2.2.3 SP1 (later we used Remoting jar 2.4.0 SP1 ), I'm afraid that these 3 attributes will not take effect even though we add them into our remoting config, right?

You mentioned you ever encountered similar case and solved it by setting timeout, but I found the timeout setting in your remoting config is still 0 (the same as our setting):

<attribute name="timeout" isParam="true">0</attribute>

Which timeout setting had you changed to solve this problem?  <attribute name="timeout"  or <attribute name="failureDisconnectTimeout"?

Actually, we just use the default remoting config provided by JBoss, and we don't want to change it since there is a comment in the remoting config :"     "

> Bisocket connection won't be closed if pulling out the ethernet cable between client and server. The failure detection code won't close the failure connection, as a result, the subsequent requests will hang after connection account exceeds the threshold
> -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: JBMESSAGING-1763
>                 URL: https://jira.jboss.org/jira/browse/JBMESSAGING-1763
>             Project: JBoss Messaging
>          Issue Type: Bug
>          Components: JMS Remoting
>    Affects Versions: 1.4.5.GA, 1.4.6.GA
>         Environment: OS: Windows Server 2003. JBoss App Server 4.2.3.GA, JBoss Messaging 1.4.5 GA, JBoss Remoting 2.2.3 SP1 
>            Reporter: mingjun jiang
>            Assignee: Howard Gao
>             Fix For: 1.4.6.GA.SP1, 1.4.7.GA
>
>         Attachments: remoting-bisocket-service.xml
>
>
> We are using JBoss App Server 4.2.3.GA, JBoss Messaging 1.4.5 GA and JBoss Remoting 2.2.3 SP1. In our application, there are a lot of Message listeners running on the client side, these message listeners will receive messages from queue/topic deployed in JBoss Messaging 
> Configuration: 
> We created our own JMS Connection factory which uses the default remoting connector. As you know, the default remoting connector is configured to use the bisocket transport. We didn't change the default value of the remoting connector 
> During we run our application, we open the JBoss web console to monitor the value of currentClientPoolSize under "Jboss.remoting" JMX MBean. 
>   
> How to reproduce this issue: 
> 1. Run 5 message listeners in the client side to receive messages from JBoss Messaging, then we observe the value of currentClientPoolSize is 10 
> 2. After processing several messages, we manually pull out the ethernet cable. The value of currentClientPoolSize is still 10. 
> 3. We run another 5 message listeners in client side, then the value of currentClientPoolSize will become 20 
> 4. After we do the same operations above several times, the value of currentClientPoolSize will increase continuously. Once the value of currentClientPoolSize is equal to the MaxPoolSize, then the subsequent incoming client requests will hang, and we will encounter the following exception in server side 
>        2009-10-20 18:08:09,655 ERROR [org.jboss.remoting.transport.socket.ServerThread] Worker thread initialization failure 
> java.net.SocketException: Connection reset 
>       at java.net.SocketInputStream.read(SocketInputStream.java:168) 
>       at java.io.BufferedInputStream.fill(BufferedInputStream.java:218) 
>       at java.io.BufferedInputStream.read(BufferedInputStream.java:235) 
>       at java.io.FilterInputStream.read(FilterInputStream.java:66) 
>       at org.jboss.remoting.transport.socket.ServerThread.readVersion(ServerThread.java:859) 
>       at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:545) 
>       at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:406) 
>       at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:173) 
> Conclusion: JBoss Messaging won't close the failure connections if they are caused by manually pulling out ethernet cable. As a result, the value of currentClientPoolSize will increase continuously and finally the new client requests will hang 
> Note: If we killed the process of message listener in client side, then the value of currentClientPoolSize will decrease to 0 immediately, it seems that the server could detect the failure connection and perform the corresponding resource releasing. 

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