[jboss-jira] [JBoss JIRA] Resolved: (JBCACHE-1361) NPE in DataContainerImpl.getNodesForEviction()

NPE in DataContainerImpl.getNodesForEviction() ---------------------------------------------- Key: JBCACHE-1361 URL: http://jira.jboss.com/jira/browse/JBCACHE-1361 Project: JBoss Cache Issue Type: Bug Security Level: Public(Everyone can see) Components: Eviction Affects Versions: 2.2.0.CR2 Reporter: Brian Stansberry Assigned To: Manik Surtani Fix For: 2.2.0.GA Call to recursively evict a subtree fails with an NPE: 2008-06-03 21:05:13,419 ERROR [org.jboss.web.tomcat.service.session.JBossCacheManager] processExpires(): failed expiring 2 with exception: java.lang.NullPointerException java.lang.NullPointerException at org.jboss.cache.DataContainerImpl.recursiveAddEvictionNodes(DataContainerImpl.java:267) at org.jboss.cache.DataContainerImpl.getNodesForEviction(DataContainerImpl.java:241) at org.jboss.cache.interceptors.PassivationInterceptor.visitEvictFqnCommand(PassivationInterceptor.java:54) at org.jboss.cache.commands.write.EvictCommand.acceptVisitor(EvictCommand.java:88) at org.jboss.cache.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:142) at org.jboss.cache.interceptors.base.CommandInterceptor.handleDefault(CommandInterceptor.java:157) at org.jboss.cache.commands.AbstractVisitor.visitEvictFqnCommand(AbstractVisitor.java:55) at org.jboss.cache.commands.write.EvictCommand.acceptVisitor(EvictCommand.java:88) at org.jboss.cache.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:142) at org.jboss.cache.interceptors.PessimisticLockInterceptor.handleEvictFqnCommand(PessimisticLockInterceptor.java:303) at org.jboss.cache.interceptors.base.PostProcessingCommandInterceptor.visitEvictFqnCommand(PostProcessingCommandInterceptor.java:138) at org.jboss.cache.commands.write.EvictCommand.acceptVisitor(EvictCommand.java:88) at org.jboss.cache.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:142) at org.jboss.cache.interceptors.base.CommandInterceptor.handleDefault(CommandInterceptor.java:157) at org.jboss.cache.commands.AbstractVisitor.visitEvictFqnCommand(AbstractVisitor.java:55) at org.jboss.cache.commands.write.EvictCommand.acceptVisitor(EvictCommand.java:88) at org.jboss.cache.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:142) at org.jboss.cache.interceptors.TxInterceptor.attachGtxAndPassUpChain(TxInterceptor.java:266) at org.jboss.cache.interceptors.TxInterceptor.handleDefault(TxInterceptor.java:253) at org.jboss.cache.commands.AbstractVisitor.visitEvictFqnCommand(AbstractVisitor.java:55) at org.jboss.cache.commands.write.EvictCommand.acceptVisitor(EvictCommand.java:88) at org.jboss.cache.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:142) at org.jboss.cache.interceptors.CacheMgmtInterceptor.visitEvictFqnCommand(CacheMgmtInterceptor.java:66) at org.jboss.cache.commands.write.EvictCommand.acceptVisitor(EvictCommand.java:88) at org.jboss.cache.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:142) at org.jboss.cache.interceptors.InvocationContextInterceptor.handleAll(InvocationContextInterceptor.java:158) at org.jboss.cache.interceptors.InvocationContextInterceptor.handleDefault(InvocationContextInterceptor.java:108) at org.jboss.cache.commands.AbstractVisitor.visitEvictFqnCommand(AbstractVisitor.java:55) at org.jboss.cache.commands.write.EvictCommand.acceptVisitor(EvictCommand.java:88) at org.jboss.cache.interceptors.InterceptorChain.invoke(InterceptorChain.java:215) at org.jboss.cache.invocation.CacheInvocationDelegate.evict(CacheInvocationDelegate.java:347) at org.jboss.web.tomcat.service.session.JBossCacheWrapper.evictSubtree(JBossCacheWrapper.java:289) at org.jboss.web.tomcat.service.session.JBossCacheService.evictSession(JBossCacheService.java:371) at org.jboss.web.tomcat.service.session.JBossCacheService.evictSession(JBossCacheService.java:361) at org.jboss.web.tomcat.service.session.JBossCacheManager.processSessionPassivation(JBossCacheManager.java:1777) at org.jboss.web.tomcat.service.session.JBossCacheManager.processExpires(JBossCacheManager.java:1542) at org.jboss.web.tomcat.service.session.JBossCacheManager.createSession(JBossCacheManager.java:804) at org.jboss.test.cluster.defaultcfg.simpleweb.test.SessionCountUnitTestCase.createAndUseSession(SessionCountUnitTestCase.java:902) at org.jboss.test.cluster.defaultcfg.simpleweb.test.SessionCountUnitTestCase.testStandaloneMaxSessionsWithMinIdle(SessionCountUnitTestCase.java:269) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at junit.framework.TestCase.runTest(TestCase.java:164) at junit.framework.TestCase.runBare(TestCase.java:130) at junit.framework.TestResult$1.protect(TestResult.java:106) at junit.framework.TestResult.runProtected(TestResult.java:124) at junit.framework.TestResult.run(TestResult.java:109) at junit.framework.TestCase.run(TestCase.java:120) at junit.framework.TestSuite.runTest(TestSuite.java:230) at junit.framework.TestSuite.run(TestSuite.java:225) at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.run(JUnitTestRunner.java:297) at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.launch(JUnitTestRunner.java:672) at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.main(JUnitTestRunner.java:567) Looks like DataContainerImpl.getNodesForEviction() is doing a peek() and passing the result to recursiveAddEvictionNodes() even if the peek() returns null. JBAS web session replication manages eviction itself, which is why the evict() call is coming from the session management layer.