Lincoln Baxter III [http://community.jboss.org/people/lincolnthree] created the discussion ""Duplicate" deployment exception logging detracts from JBoss AS usability" To view the discussion, visit: http://community.jboss.org/message/546092#546092 -------------------------------------------------------------- When using JBoss AS (6 M{X} in this case) - deployment errors can be critical for debugging botched configurations in web-applications. In fact, looking through the stack trace the only way to find out what's wrong, and why your app isn't deploying. That's fine. The problem comes when the exception message is duplicated or even hidden by numerous exceptions that pile up in the log, effectively turning the next minute or so into a duck hunt, weeding through exceptions until you find the one line that you're really looking for. I think JBoss AS/MC should be more selective when displaying exceptions. For example: http://pastebin.com/NjjXLuiF http://pastebin.com/NjjXLuiF - In this case, I don't even want to see an exception. I've simply got a Servlet that can't be resolved to a class, and all really I care about is: ` DEPLOYMENTS IN ERROR:  Deployment "vfszip:/Users/lbaxter/dev/jboss-6/server/default/deploy/pretty-blog.war/" is in error due to the following reason(s): java.lang.ClassNotFoundException: com.sun.FooServlet from BaseClassLoader@1e05df6d ` It would be even nicer if I were told that I had a bad Servlet definition in web.xml, but instead, I get all of this... which isn't really helpful to an end-user. (Granted, in this case all of the exceptions actually contain the same  root cause, but in some cases that doesn't happen - I certainly don't want duplicate exceptions.) I'd like to open a JIRA for this. It's relatively low-hanging fruit that could help smoothe the developer experience. `11:56:14,884 INFO  org.jboss.web.tomcat.service.deployers.TomcatDeployment org.jboss.web.tomcat.service.deployers.TomcatDeployment undeploy, ctxPath=/pretty-blog 11:56:17,425 ERROR org.jboss.kernel.plugins.dependency.AbstractKernelController org.jboss.kernel.plugins.dependency.AbstractKernelController Error installing to PreReal: name=vfszip:/Users/lbaxter/dev/jboss-6/server/default/deploy/pretty-blog.war/ state=PostClassLoader mode=Manual requiredState=PreReal: org.jboss.deployers.spi.DeploymentException: java.lang.ClassNotFoundException: com.sun.FooServlet from BaseClassLoader@5b20a97e     at org.jboss.resteasy.integration.deployers.ResteasyScannerDeployer.deployApplicationClass(ResteasyScannerDeployer.java:112)     at org.jboss.resteasy.integration.deployers.ResteasyScannerDeployer.internalDeploy(ResteasyScannerDeployer.java:57)     at org.jboss.deployers.spi.deployer.helpers.AbstractRealDeployer.deploy(AbstractRealDeployer.java:55)     at org.jboss.deployers.plugins.deployers.DeployerWrapper.deploy(DeployerWrapper.java:179)     at org.jboss.deployers.plugins.deployers.DeployersImpl.doDeploy(DeployersImpl.java:1660)     at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1378)     at org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:1319)     at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:378)     at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:2029)     at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:1050)     at org.jboss.dependency.plugins.AbstractController.executeOrIncrementStateDirectly(AbstractController.java:1289)     at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1213)     at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1107)     at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:918)     at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:633)     at org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:898)     at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:677)     at org.jboss.system.server.profileservice.repository.MainDeployerAdapter.process(MainDeployerAdapter.java:117)     at org.jboss.system.server.profileservice.hotdeploy.HDScanner.scan(HDScanner.java:409)     at org.jboss.system.server.profileservice.hotdeploy.HDScanner.run(HDScanner.java:294)     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)     at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317)     at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150)     at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98)     at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:181)     at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:205)     at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)     at java.lang.Thread.run(Thread.java:637) Caused by: java.lang.ClassNotFoundException: com.sun.FooServlet from BaseClassLoader@5b20a97e     at org.jboss.classloader.spi.base.BaseClassLoader.loadClass(BaseClassLoader.java:498)     at java.lang.ClassLoader.loadClass(ClassLoader.java:248)     at org.jboss.resteasy.integration.deployers.ResteasyScannerDeployer.deployApplicationClass(ResteasyScannerDeployer.java:108)     ... 28 more 11:56:17,430 WARN  org.jboss.system.server.profileservice.hotdeploy.HDScanner org.jboss.system.server.profileservice.hotdeploy.HDScanner Failed to process changes: org.jboss.deployers.client.spi.IncompleteDeploymentException: Summary of incomplete deployments (SEE PREVIOUS ERRORS FOR DETAILS): *** DEPLOYMENTS IN ERROR: Name -> Error vfszip:/Users/lbaxter/dev/jboss-6/server/default/deploy/pretty-blog.war/ -> org.jboss.deployers.spi.DeploymentException: java.lang.ClassNotFoundException: com.sun.FooServlet from BaseClassLoader@5b20a97e DEPLOYMENTS IN ERROR:   Deployment "vfszip:/Users/lbaxter/dev/jboss-6/server/default/deploy/pretty-blog.war/" is in error due to the following reason(s): java.lang.ClassNotFoundException: com.sun.FooServlet from BaseClassLoader@5b20a97e     at org.jboss.deployers.plugins.deployers.DeployersImpl.checkComplete(DeployersImpl.java:1198)     at org.jboss.deployers.plugins.deployers.DeployersImpl.checkComplete(DeployersImpl.java:1144)     at org.jboss.deployers.plugins.main.MainDeployerImpl.checkComplete(MainDeployerImpl.java:848)     at org.jboss.system.server.profileservice.repository.MainDeployerAdapter.checkComplete(MainDeployerAdapter.java:128)     at org.jboss.system.server.profileservice.hotdeploy.HDScanner.scan(HDScanner.java:416)     at org.jboss.system.server.profileservice.hotdeploy.HDScanner.run(HDScanner.java:294)     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)     at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317)     at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150)     at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98)     at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:181)     at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:205)     at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)     at java.lang.Thread.run(Thread.java:637) 11:56:18,504 SEVERE javax.enterprise.resource.webcontainer.jsf.config javax.enterprise.resource.webcontainer.jsf.config Unable to access url jndi:/localhost/pretty-blog/WEB-INF/faces-config.xml.  Monitoring for this resource will no longer occur. 11:56:44,856 ERROR org.jboss.kernel.plugins.dependency.AbstractKernelController org.jboss.kernel.plugins.dependency.AbstractKernelController Error installing to PreReal: name=vfszip:/Users/lbaxter/dev/jboss-6/server/default/deploy/pretty-blog.war/ state=PostClassLoader mode=Manual requiredState=PreReal: org.jboss.deployers.spi.DeploymentException: java.lang.ClassNotFoundException: com.sun.FooServlet from BaseClassLoader@1e05df6d     at org.jboss.resteasy.integration.deployers.ResteasyScannerDeployer.deployApplicationClass(ResteasyScannerDeployer.java:112)     at org.jboss.resteasy.integration.deployers.ResteasyScannerDeployer.internalDeploy(ResteasyScannerDeployer.java:57)     at org.jboss.deployers.spi.deployer.helpers.AbstractRealDeployer.deploy(AbstractRealDeployer.java:55)     at org.jboss.deployers.plugins.deployers.DeployerWrapper.deploy(DeployerWrapper.java:179)     at org.jboss.deployers.plugins.deployers.DeployersImpl.doDeploy(DeployersImpl.java:1660)     at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1378)     at org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:1319)     at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:378)     at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:2029)     at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:1050)     at org.jboss.dependency.plugins.AbstractController.executeOrIncrementStateDirectly(AbstractController.java:1289)     at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1213)     at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1107)     at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:918)     at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:633)     at org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:898)     at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:677)     at org.jboss.system.server.profileservice.repository.MainDeployerAdapter.process(MainDeployerAdapter.java:117)     at org.jboss.system.server.profileservice.hotdeploy.HDScanner.scan(HDScanner.java:409)     at org.jboss.system.server.profileservice.hotdeploy.HDScanner.run(HDScanner.java:294)     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)     at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317)     at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150)     at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98)     at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:181)     at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:205)     at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)     at java.lang.Thread.run(Thread.java:637) Caused by: java.lang.ClassNotFoundException: com.sun.FooServlet from BaseClassLoader@1e05df6d     at org.jboss.classloader.spi.base.BaseClassLoader.loadClass(BaseClassLoader.java:498)     at java.lang.ClassLoader.loadClass(ClassLoader.java:248)     at org.jboss.resteasy.integration.deployers.ResteasyScannerDeployer.deployApplicationClass(ResteasyScannerDeployer.java:108)     ... 28 more 11:56:44,861 WARN  org.jboss.system.server.profileservice.hotdeploy.HDScanner org.jboss.system.server.profileservice.hotdeploy.HDScanner Failed to process changes: org.jboss.deployers.client.spi.IncompleteDeploymentException: Summary of incomplete deployments (SEE PREVIOUS ERRORS FOR DETAILS): *** DEPLOYMENTS IN ERROR: Name -> Error vfszip:/Users/lbaxter/dev/jboss-6/server/default/deploy/pretty-blog.war/ -> org.jboss.deployers.spi.DeploymentException: java.lang.ClassNotFoundException: com.sun.FooServlet from BaseClassLoader@1e05df6d DEPLOYMENTS IN ERROR:   Deployment "vfszip:/Users/lbaxter/dev/jboss-6/server/default/deploy/pretty-blog.war/" is in error due to the following reason(s): java.lang.ClassNotFoundException: com.sun.FooServlet from BaseClassLoader@1e05df6d     at org.jboss.deployers.plugins.deployers.DeployersImpl.checkComplete(DeployersImpl.java:1198)     at org.jboss.deployers.plugins.deployers.DeployersImpl.checkComplete(DeployersImpl.java:1144)     at org.jboss.deployers.plugins.main.MainDeployerImpl.checkComplete(MainDeployerImpl.java:848)     at org.jboss.system.server.profileservice.repository.MainDeployerAdapter.checkComplete(MainDeployerAdapter.java:128)     at org.jboss.system.server.profileservice.hotdeploy.HDScanner.scan(HDScanner.java:416)     at org.jboss.system.server.profileservice.hotdeploy.HDScanner.run(HDScanner.java:294)     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)     at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317)     at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150)     at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98)     at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:181)     at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:205)     at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)     at java.lang.Thread.run(Thread.java:637)` -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/546092#546092] Start a new discussion in JBoss Microcontainer at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]