[jboss-dev] JBoss-5.0 GA and JBoss-5.0.1 GA incompatible?

While working on a unrelated issue, i noticed that the serialVersionUID of org.jboss.security.SimplePrincipal (in jbosssx.jar) has changed between JBossAS5.0 GA and the current 5.0 branch. The 5.0 branch uses 2.0.2.SP6 version of jbosssx.jar whereas JBossAS5.0 GA uses 2.0.2.SP3. Between these versions, the serialVersionUID of the SimplePrincipal class has changed from private static final long serialVersionUID = 1L; // In 2.0.2.SP3 to private static final long serialVersionUID = 7701951188631723261L; // In 2.0.2.SP6 As a result JBossAS-5.0 GA clients (ex: servlets on JBossAS-5.0 GA) fail against JBossAS-5.0.1.GA server (current 5.0 branch) when doing the following: import org.jboss.security.client.SecurityClient; import org.jboss.security.client.SecurityClientFactory; // psuedo code - do login SecurityClient securityClient = SecurityClientFactory.getSecurityClient(); securityClient.setSimple("jai", "pass"); securityClient.login(); // lookup bean hosted on 5.0.1 GA Properties props = new Properties(); props.put(Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory"); props.put(Context.PROVIDER_URL,"jnp://localhost:1199"); Context ctx = new InitialContext(props); MySecureBean bean = (MySecureBean) ctx.lookup("MySecureBean"); System.out.println("Got bean"); bean.doSomethingSecure("jai", 2); 12:33:51,261 ERROR [STDERR] Caused by: java.io.InvalidClassException: org.jboss.security.SimplePrincipal; local class incompatible: stream classdesc serialVersionUID = 1, local class serialVersionUID = 7701951188631723261 12:33:51,261 ERROR [STDERR] at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:546) 12:33:51,261 ERROR [STDERR] at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1552) 12:33:51,261 ERROR [STDERR] at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1466) 12:33:51,261 ERROR [STDERR] at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1699) 12:33:51,261 ERROR [STDERR] at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305) 12:33:51,261 ERROR [STDERR] at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1908) 12:33:51,261 ERROR [STDERR] at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1832) 12:33:51,261 ERROR [STDERR] at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1719) 12:33:51,261 ERROR [STDERR] at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305) ... // trimmed most of the unrelevant logs 12:33:51,264 ERROR [STDERR] at org.jboss.ejb3.proxy.handler.ProxyInvocationHandlerBase.invoke(ProxyInvocationHandlerBase.java:261) 12:33:51,264 ERROR [STDERR] at org.jboss.ejb3.proxy.handler.session.SessionSpecProxyInvocationHandlerBase.invoke(SessionSpecProxyInvocationHandlerBase.java:101) 12:33:51,264 ERROR [STDERR] at $Proxy95.doSomething(Unknown Source) 12:33:51,264 ERROR [STDERR] at org.myapp.servlet.SimpleServlet.doPost(SimpleServlet.java:40) The other way (5.0.1 GA clients against 5.0 GA server) fails too. From SVN logs, it appears that the serialVersionUID change was meant for compatibility with external tools like JBoss Tools. Any way to make 5.0.1.GA and 5.0 GA compatible? On a related note, in the component-matrix for Branch_5_x is see that the jbosssx package is still at 2.0.2.SP3: <version.org.jboss.security>2.0.2.SP3</version.org.jboss.security> It's only upgraded to 2.0.2.SP6 in 5.0 branch. regards, -Jaikiran