March 2009 - jboss-user - Jboss List Archives

[JBoss Messaging] - Re: Timeout for Disconnected JBM Client

by ron.sigal＠jboss.com

There is further discussion about this issue on the thread "Messaging blocked by long time-out" on the Remoting forum at http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4219345#4219345. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4219346#4219346 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4219346

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[Remoting] - Re: Messaging blocked by long time-out

by ron.sigal＠jboss.com

Hi guys, First, a little background. JBossMessaging sends messages to a consumer by calling org.jboss.remoting.callback.ServerInvokerCallbackHandler.handleCallback(), which, in the case of the bisocket transport. results in a call to org.jboss.remoting.Client.invoke(), which eventually leads to a write on a java.net.Socket. Now, it's true that there is a parameter, "callbackTimeout", that can be used to configure the callback Client and, ultimately, the Sockets used by the Client. But it's important to note that the Socket timeout value, set by Socket.setSoTimeout(), affects blocking reads on the Socket's SocketInputStream. It doesn't affect blocking writes. See, for example, http://java.sun.com/j2se/1.4.2/docs/api/java/net/Socket.html#setSoTimeout.... See also http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4031100, where someone asked (in 1997!) for a write timeout for Sockets. The request was rejected since they anticipated NIO would eliminate the problem. "thammoud" wrote : | I believe that is a tcp keep alive issue | Yes, I think you'll have to depend on TCP to discover that the connection has failed. Indeed, it's probably a keepalive failure that's causing the exceptions your both seeing. Fortunately, it is possible to configure the keepalive parameters so that the failure is detected more quickly. Unfortunately, as far as I know, you have to set the parameters at the TCP level rather than the Java level. For Linux configuration, see, for example, http://www.linux.org/docs/ldp/howto/TCP-Keepalive-HOWTO/usingkeepalive.html section 3.1, in particular, and for Windows, see, for example, http://msdn.microsoft.com/en-us/library/ms819735.aspx Let us know your results. -Ron View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4219345#4219345 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4219345

17 years, 1 month

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[Remoting] - Re: Holding lock in HTTPClientInvoker.useHttpURLConnection()

by ron.sigal＠jboss.com

I don't see anything too unusual here, since sun.net.www.protocol.http.HttpURLConnection.getInputStream() and java.io.BufferedInputStream.read() are both synchronized methods. Rather than a lock problem, I would guess that jrockit.net.SocketNativeIO.readBytesPinned() is hanging, waiting for something to read, though I don't have the source for the jrockit classes. You could try setting the value of "timeout" to see if the call times out. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4219340#4219340 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4219340

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[Installation, Configuration & DEPLOYMENT] - Re-deployment questions?

by dickson1888

Hi all, I have several questions about the deployment of a web application. Thanks for any help. 1. If I want to re-deploy the web application directly, I know that I just put the new war file in the "deploy" folder. It can re-deploy itself. My question is how about the transaction is handled during the deployment. Does JBoss AS 5.0 will wait all connection/request to finish first and then stop the new request; then do deployment. Please help to clarify the deployment flow. 2. If I use the other way to re-deploy the web application - undeploy it first and deploy it with the new version, how does JBoss handle the transaction/request during undeploy? 3. Also, if any user browse that web page in the stopped web application, they will 404 page not found. Is there other method/handling better to show the specific stopped web application is not available ( a message page )? Thanks in advance for anyone's help. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4219339#4219339 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4219339

17 years, 1 month

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[JNDI/Naming/Network] - Re: Insert CLOB or BLOB in oracle 10g with JNDI , giving Cla

by vishal_2100

I faced a similar problem when I was trying to use Oracle TABs for data insertion through JNDI. Can some one help me out? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4219338#4219338 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4219338

17 years, 1 month

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[Installation, Configuration & DEPLOYMENT] - Re: JBoss + Apache

by dickson1888

Hi Endy, I am doing the job as same as you (migrating to a new server). Still study at how to use JBoss AS 5.0. As our existing site is a single site for different applications, Apache is the front end and application server and java site are the back end. The Apache works as the single entry point for all applications. I am still thinking how to connect Apache to JBoss. (use Mod_Proxy or Mod_jk). For JBoss, single server for a single web application (easy to manage). If one JBoss server for multiple web application, it is risk wheneven JBoss server hang for any reason (deploy new application or others); it will affect all web applications under that JBoss server. What do you think? Peter and Endy. Thanks for your any suggestion in advance. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4219334#4219334 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4219334

17 years, 1 month

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[Beginners Corner] - Re: What login-module will JBoss AS 5.0 provide/include?

by dickson1888

Thanks for Wolfgang. The following link for full picture and more information about the login module : http://www.jboss.org/community/docs/DOC-10760 View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4219329#4219329 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4219329

17 years, 1 month

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[JBoss jBPM] - Re: Join problem

by kukeltje

even fork 1 fork 2 join 2 join 1 is ok (fork/join 2 is fully inside fork1/join1 View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4219321#4219321 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4219321

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[JBoss jBPM] - Re: Join problem

by kukeltje

All transitions from a fork have to end in the same join. If there is no additional fork in between it has to be the join they encounter. Fork 1 Join 1 Fork 2 Join 2 is ok Fork 1 Join 2 Fork 3 Join 1 is not View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4219320#4219320 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4219320

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[JBoss jBPM] - Re: Join problem

by armita

"kukeltje" wrote : forks/joins have to be fully nested, from what I quickly scanned they are not in your case What does that mean to be fully nested View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4219313#4219313 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4219313

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jboss-user March 2009