[jboss-dev-forums] [Design of POJO Server] - VFS truncation issues

[scott.stark@jboss.org]

There are a few reports of file truncation with the latest vfs. Mark is seeing truncation of class files in his setup.


  | ... it keeps having stack traces like the following, and it seems like for ever class imaginable (exaggeration for illustration purposes)
  | 
  | 14:45:33,092 WARN  [ClassLoaderManager] Unexpected error during load of:org.jdom.Element
  | java.lang.ClassFormatError: Truncated class file
  |        at java.lang.ClassLoader.defineClass1(Native Method)
  |        at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
  |        at org.jboss.classloader.spi.base.BaseClassLoader.access$200(BaseClassLoader.java:63)
  |        at org.jboss.classloader.spi.base.BaseClassLoader$2.run(BaseClassLoader.java:502)
  |        at org.jboss.classloader.spi.base.BaseClassLoader$2.run(BaseClassLoader.java:462)
  |        at java.security.AccessController.doPrivileged(Native Method)
  |        at org.jboss.classloader.spi.base.BaseClassLoader.loadClassLocally(BaseClassLoader.java:460)
  |        at org.jboss.classloader.spi.base.BaseClassLoader.loadClassLocally(BaseClassLoader.java:437)
  |        at org.jboss.classloader.spi.base.BaseDelegateLoader.loadClass(BaseDelegateLoader.java:134)
  |        at org.jboss.classloader.spi.filter.FilteredDelegateLoader.loadClass(FilteredDelegateLoader.java:131)
  |        at org.jboss.classloader.spi.base.ClassLoadingTask$ThreadTask.run(ClassLoadingTask.java:452)
  |        at org.jboss.classloader.spi.base.ClassLoaderManager.nextTask(ClassLoaderManager.java:254)
  |        at org.jboss.classloader.spi.base.ClassLoaderManager.process(ClassLoaderManager.java:148)
  |        at org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:196)
  |        at org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:1009)
  |        at org.jboss.classloader.spi.base.BaseClassLoader.loadClassFromDomain(BaseClassLoader.java:728)
  |        at org.jboss.classloader.spi.base.BaseClassLoader.loadClass(BaseClassLoader.java:372)
  |        at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
  |        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
  |        at java.lang.Class.getDeclaredMethods0(Native Method)
  |        at java.lang.Class.privateGetDeclaredMethods(Class.java:2395)
  |        at java.lang.Class.getDeclaredMethods(Class.java:1763)
  |        at org.jboss.metadata.annotation.creator.AbstractComponentProcessor.processClass(AbstractComponentProcessor.java:290)
  |        at org.jboss.metadata.annotation.creator.AbstractComponentProcessor.processClass(AbstractComponentProcessor.java:213)
  |        at org.jboss.metadata.annotation.creator.AbstractComponentProcessor.process(AbstractComponentProcessor.java:188)
  |        at org.jboss.metadata.annotation.creator.web.WebComponentProcessor.process(WebComponentProcessor.java:60)
  |        at org.jboss.metadata.annotation.creator.web.WebComponentProcessor.process(WebComponentProcessor.java:42)
  |        at org.jboss.metadata.annotation.creator.web.Web25MetaDataCreator.create(Web25MetaDataCreator.java:68)
  |        at org.jboss.deployment.AnnotationMetaDataDeployer.processJBossWebMetaData(AnnotationMetaDataDeployer.java:271)
  |        at org.jboss.deployment.AnnotationMetaDataDeployer.deploy(AnnotationMetaDataDeployer.java:196)
  |        at org.jboss.deployment.AnnotationMetaDataDeployer.deploy(AnnotationMetaDataDeployer.java:93)
  |        at org.jboss.deployers.plugins.deployers.DeployerWrapper.deploy(DeployerWrapper.java:174)
  |        at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:970)
  |        at org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:911)
  |        at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
  |        at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1392)
  |        at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:784)
  |        at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:912)
  |        at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:834)
  |        at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:672)
  |        at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:455)
  |        at org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:594)
  |        at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:541)
  |        at org.jboss.system.server.profileservice.ProfileServiceBootstrap.loadProfile(ProfileServiceBootstrap.java:257)
  |        at org.jboss.system.server.profileservice.ProfileServiceBootstrap.start(ProfileServiceBootstrap.java:135)
  |        at org.jboss.bootstrap.AbstractServerImpl.start(AbstractServerImpl.java:409)
  |        at org.jboss.Main.boot(Main.java:209)
  |        at org.jboss.Main$1.run(Main.java:544)
  |        at java.lang.Thread.run(Thread.java:595) 
  | 

Another is this xml parse failure:

  | Caused by: org.jboss.xb.binding.JBossXBException: Failed to parse 
  | source: Premature end of file. @ *unknown*[-1,-1]
  | 	at 
  | org.jboss.xb.binding.parser.sax.SaxJBossXBParser.parse(SaxJBossXBParser.java:193)
  | 	at 
  | org.jboss.xb.binding.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:153)
  | 	at 
  | org.jboss.deployers.vfs.spi.deployer.JBossXBDeployerHelper.parse(JBossXBDeployerHelper.java:191)
  | 	at 
  | org.jboss.deployers.vfs.spi.deployer.JBossXBDeployerHelper.parse(JBossXBDeployerHelper.java:165)
  | 	at 
  | org.jboss.deployers.vfs.spi.deployer.SchemaResolverDeployer.parse(SchemaResolverDeployer.java:132)
  | 	at 
  | org.jboss.deployers.vfs.spi.deployer.SchemaResolverDeployer.parse(SchemaResolverDeployer.java:118)
  | 	at 
  | org.jboss.deployers.vfs.spi.deployer.AbstractVFSParsingDeployer.parse(AbstractVFSParsingDeployer.java:128)
  | 	at 
  | org.jboss.deployers.spi.deployer.helpers.AbstractParsingDeployerWithOutput.createMetaData(AbstractParsingDeployerWithOutput.java:329)
  | 	... 65 more
  | Caused by: org.xml.sax.SAXException: Premature end of file. @ 
  | *unknown*[-1,-1]
  | 	at 
  | org.jboss.xb.binding.parser.sax.SaxJBossXBParser$MetaDataErrorHandler.fatalError(SaxJBossXBParser.java:438)
  | 	at org.apache.xerces.util.ErrorHandlerWrapper.fatalError(Unknown Source)
  | 	at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
  | 	at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
  | 	at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
  | 	at 
  | org.apache.xerces.impl.XMLVersionDetector.determineDocVersion(Unknown 
  | Source)
  | 	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
  | 	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
  | 	at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
  | 	at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
  | 	at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
  | 	at 
  | org.jboss.xb.binding.parser.sax.SaxJBossXBParser.parse(SaxJBossXBParser.java:189)
  | 	... 72 more
  | 

I have not seen this yet, but its something we can't really ignore. Seems like a thread safety issue where stream contents are getting out of sync.


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