November 2008 - jboss-user - Jboss List Archives

[Beginners Corner] - Process isolation in jBoss

by alikk

Hi! I am working with a product built around jBoss AS. The server handles all UI interactions as well as some heavy weight tasks that may be requested by a user. These tasks may potentially consume a lot of the server resources including memory and CPU time. This increases system reposponse times and deteriorates uses experience. These tasks also may cause out of memory exceptions and kill the entire system. In most cases these tasks include some database interaction and data processing. The executing code is implemented as session EJBs. While handling high resource demands and exceptions is a separate issue, I am also looking for ways to isolate execution of these tasks from the rest of the system, may be running them in a separate JVM. I will be very interested to learn possible solutions that work well with jBoss. Thank you! --Alexader View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4187920#4187920 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4187920

17 years, 7 months

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[EJB/JBoss] - Re: JMX view

by mohitanchlia

Thanks. Why can't I use Jndi Name in tag in jboss.xml. Does it just takes the Object Name. Where can I get more information about it. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4187915#4187915 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4187915

17 years, 7 months

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[Installation, Configuration & DEPLOYMENT] - Cannot start Jboss

by jesfalso

Hello, I have been working for a month succesfully with JBoss, but now I can't start the server. I downloaded a clean distribution of jboss-4.2.3.GA application server, and when I try to run with the command java -jar run.jar It seems to start but I am not able to watch http://localhost:8080. When I put this address in the browser it takes thinking so it seems that something is happening but I can't see the jboss web page. I disabled my firewall and my antivirus and it happened the same. The console shows "started in" and the minutes, but it dosn't work in the browser. I have tried it from Eclipse IDE with and without jboss tools and it hungs. I don't know wha else I can do. does anyone have any idea of what I can do? Thanks in advance View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4187913#4187913 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4187913

17 years, 7 months

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[Remoting] - How to classify instances of InvokerCallbackHandler ?

by DanielTravin

Hi all, I have a server that pushes data to clients. Data could be classified by events and data about different events come randomly to server from the 3rd source. Client connects to server and says "I want updates for data about event=N" When data for event N arrives, server does iteration through all callback handlers, selects those that want to be notified about event N and invokes handleCallback on them. My question is what API to use when client is saying "I am intrested in event N" ? My suggestion is to put value into the metadata map when client calls Client#addListener(...) and get this value on the server side in ServerInvoker#handleInternalInvocation(...). In this case extension for class ServerInvoker is needed. Why there is no out of the box solution for this ? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4187912#4187912 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4187912

17 years, 7 months

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[JBoss Messaging] - Re: NullPointerException in org.jboss.jms.server.endpoint.Se

by timfox

Have you tried a more recent release? (These are available in SVN but not binary). Or you could wait for a week or so for the next binary release. We've fixed a lot of stuff and a lot of stuff has been fixed in remoting since the release you're using. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4187911#4187911 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4187911

17 years, 7 months

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[JBoss jBPM] - Re: threads with task and process with task

by salaboy21

In jBPM the concept of task is about human tasks, so running an .exe is like a system taks. So you can use a Node that execute that .exe and then use a fork to do it in parallel. You questions sounds like you are trying to do something with a heavy multi threading and not a business process. Can you explain your scenario? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4187910#4187910 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4187910

17 years, 7 months

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[JBoss Messaging] - Re: Comparison to ActiveMQ

by timfox

"mkelley" wrote : | | We don't want to do this. We need to intermix queues (whose listeners MUST receive and process an ordered sequence of messages) and topics (which can be discarded). Even if a topic-only solution was otherwise ok, it would kind of defeat the purpose: having one (or a few) well-known destinations to which all messages could be cc'd, reconfiguring only the broker to filter/route to the right consumers. Using wildcards, we'd wind up spamming all subtopics so that the 'real' topic (say, topic.stock.redhat) and virtual topic (topic.stock) both receive messages. | If you can explain in a bit more detail (with a concrete example) in a JIRA we'll see if we can add this to JBM 2.0. This is something that has come up before, and would be a nice feature to have. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4187909#4187909 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4187909

17 years, 7 months

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[JBoss Messaging] - Re: Exponential back of period - redeliver delay

by timfox

Yes, JBM supports redelivery delays, see the user guide for more info. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4187908#4187908 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4187908

17 years, 7 months

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[JBoss jBPM] - Re: threads with task and process with task

by Arunachalamamsam

multiple instances , i mean each task executing in a different process / thread Thanks View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4187907#4187907 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4187907

17 years, 7 months

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[JBoss jBPM] - Re: threads with task and process with task

by Arunachalamamsam

hi, thanks for the reply. actually i want to spawn multiple instances of (either process or threads, i dono which is better in jBPM) task, and each need to perform work (say for example , run an exe) u said, there is no limitation in forking many process, -- do i need to fork manually or i just need to configure or jBPM will do it for me? -- will it do java Run Time Process for forking, internally? -- "but it depends on how much data you will use." -> can u pls explain on this. Please guide / correct me in this regard. Thanks, Arunachalam. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4187906#4187906 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4187906

17 years, 7 months

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jboss-user November 2008