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https://jira.jboss.org/browse/WELD-59?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pete Muir updated WELD-59:
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Fix Version/s: 1.1.0.CR1
(was: 1.1.0.Beta2)
> Clustered WebBeans, no support for sessionscoped (and higher) replication
> -------------------------------------------------------------------------
>
> Key: WELD-59
> URL: https://jira.jboss.org/browse/WELD-59
> Project: Weld
> Issue Type: Bug
> Components: Scopes & Contexts
> Affects Versions: 1.0.0.PREVIEW1
> Environment: JBoss AS 5.1 + JDK 6
> Reporter: John Ament
> Fix For: 1.1.0.CR1
>
> Attachments: ClusteredWebBeansTestApp.zip,
> ClusteredWebBeansTestApp.zip
>
>
> From what I can tell, this is what happens.
> Assume you have a 2 node environment w/ apache httpd + mod_jk in front of the
> jboss servers, used to limit servers exposed + a loadbalancer (F5 ASM) in
> front of those. The apache servers are only configured to talk to one jboss
> server each (httpd + jboss are on same box, they only talk to the local
> client). the f5 serving the initial request is configured for pure round
> robin (no cookie persistence) and as a result request 1 could go to server 1
> and then request 2 goes to server 2.
> Now assume that the two jboss servers are clustered together, the EJBs are
> clustered and have a cache policy (based on the JBoss annotations). They
> only have local interfaces. In addition, there are some classes that are
> only POJOs; but they sit in the ejb module. Based on what's happening these
> objects should be replicated as part of the HTTP session state.
> A few problems seem to occur when the request goes to the second server after
> the first request goes to the first server.
> 1. References to the resources required by the EJBs are not injected in the
> second server. This includes members decorated @Resource or
> @PersistenceContext
> 2. References to EJBs required at the view level are not restored.
> In addition, concurrent modification exceptions seem to be more likely when
> deployed like this, resulting in having to downgrade EJBs to POJOs in order
> to remain stateful.
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