EAR with WAR classloading isolation & commons-httpclient -------------------------------------------------------- Key: JBAS-4813 URL: http://jira.jboss.com/jira/browse/JBAS-4813 Project: JBoss Application Server Issue Type: Bug Security Level: Public (Everyone can see) Components: ClassLoading, Web (Tomcat) service Affects Versions: JBossAS-4.0.5.GA, JBossAS-4.0.3 SP1 Environment: Linux 2.6.11-1.1369_FC4smp (Fedora Core 4) 2005 i686 i686 i386 GNU/Linux jrockit-R26.4.0-jdk1.5.0_06 Reporter: C￩dric Chantepie Assigned To: Scott M Stark Priority: Blocker We have an EAR including 4 modules : - an ejb .jar, - persistence .har - 2 webapps. 3 modules -- the ejb .jar and the 2 webapps, depends on commons-httpclient 3.1, different from jboss version which 2.x, so I've first maid the EAR isolated by adding the jboss-app.xml with instruction given in JBoss wiki about EAR classloading. == META-INF/jboss-app.xml == <!DOCTYPE jboss-app PUBLIC "-//JBoss//DTD J2EE Application 1.4//EN" "http://www.jboss.org/j2ee/dtd/jboss-app_4_0.dtd"> <jboss-app> <loader-repository>my.package:loader=My.ear <loader-repository-config>java2ParentDelegation=false</loader-repository-config> </loader-repository> <jmx-name>my.package:module=My.ear</jmx-name> <module> <har>MyPersistence.har</har> </module> </jboss-app> Then I've added Class-Path attribute in ejb .jar manifest. == ejb.jar | META-INF/MANIFEST.MF == Manifest-Version: 1.0 Class-Path: lib/commons-httpclient-3.1.jar lib/commons-codec-1.2.jar l ib/lucene-core-2.0.0.jar lib/commons-lang-2.3.jar lib/j2cdk.jar lib/l ucene-analyzers-2.0.0.jar (Line breaks there are as in MANIFEST.MF when I extract it from the jar.) I've also manifest files in WAR for the 2 webapps, but I'm not sure jboss/jbossweb(tomcat) take care of it. == webapp1.war | META-INF/MANIFEST.MF == Manifest-Version: 1.0 Class-Path: lib/a-web-lib.jar lib/commons-beanutils-1.7.0.jar li b/commons-beanutils-core-1.7.0.jar lib/commons-digester-1.6.jar lib/c ommons-fileupload-1.0.jar lib/j2cdk-taglib.jar lib/j2cdk.jar lib/jgen .jar lib/jstl.jar lib/standard.jar lib/struts-1.2.9.jar lib/taglibs-m ailer.jar lib/commons-httpclient-3.1.jar == webapp2.war | META-INF/MANIFEST.MF == Manifest-Version: 1.0 Class-Path: lib/a-web-lib.jar lib/commons-beanutils-1.7.0.jar li b/commons-beanutils-core-1.7.0.jar lib/commons-digester-1.6.jar lib/j 2cdk-taglib.jar lib/j2cdk.jar lib/jgen.jar lib/jstl.jar lib/standard. jar lib/struts-1.2.9.jar lib/taglibs-mailer.jar lib/htmlparser-1.0-SN APSHOT.jar lib/commons-httpclient-3.1.jar And I've also jboss-web.xml files in these two WAR, even if there are included when deployed inside EAR (which is the top deployment in this case), with the same load repository specified "my.package:loader=My.ear". == webapp1.war | WEB-INF/MANIFEST.MF == <?xml version='1.0' encoding='UTF-8'?> <!DOCTYPE jboss-web PUBLIC "-//JBoss//DTD Web Application 2.3V2//EN" "http://www.jboss.org/j2ee/dtd/jboss-web_3_2.dtd"> <jboss-web> <context-root>/BO</context-root> <virtual-host>www.my-vhost.com</virtual-host> <class-loading java2ClassLoadingCompliance="false"> <loader-repository>my.package:loader=My.ear <loader-repository-config>java2ParentDelegation=false</loader-repository-config> </loader-repository> </class-loading> </jboss-web> == webapp2.war | WEB-INF/MANIFEST.MF == <?xml version='1.0' encoding='UTF-8'?> <!DOCTYPE jboss-web PUBLIC "-//JBoss//DTD Web Application 2.3V2//EN" "http://www.jboss.org/j2ee/dtd/jboss-web_3_2.dtd"> <jboss-web> <context-root>/</context-root> <virtual-host>www.my-vhost.com</virtual-host> <class-loading java2ClassLoadingCompliance="false"> <loader-repository>my.package:loader=My.ear <loader-repository-config>java2ParentDelegation=false</loader-repository-config> </loader-repository> </class-loading> </jboss-web> Ok, that the situation. All work well on several developpement servers (tested on 3 linux hosts and 1 os x), it can be deployed without any error on prodution server (which environement is indicated in this issue), but I get an exception when I test it. The exceptions occurs when I call a JSP, not precompiled and so compiled on-the-fly by jbossweb (as on developpement servers where it works fine). Then I get a NoSuchMethodException about getParams() on org.apache.commons.httpclient.HttpConnectionManager. In fact this method doesn't exist in commons-httpclient 2.x included in JBoss, that why I include it as lib in EAR, and isolate this one. If I replace the commons-httpclient in jboss/server/default/lib by mine it works fine. I've tested on 3 other server with the same JBoss, same JVM and same EAR, it works on the others. I'm sure JBoss/JVM/EAR are absolutely the same as on the production server because in fact I've make a tar file of all this on the server before transfering it on the 3 others. 2 of these test server have the same linux version (kernel), excepted SMP support. Here is where I'm. In fact now I really don't know what could cause this difference, and prevent EAR from working on production jboss server. Could it be related to the SMP (2 cpu) ? Does in this case jbossweb compile with a different classloader for the second cpu ? Maybe silly but I haven't real idea. So please if you can give some useful information. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira