[jboss-jira] [JBoss JIRA] (DROOLS-2275) Null pointer exception when calling updateToVersion with existing data in a stateful KieSession

Null pointer exception when calling updateToVersion with existing data in a stateful KieSession ----------------------------------------------------------------------------------------------- Key: DROOLS-2275 URL: https://issues.jboss.org/browse/DROOLS-2275 Project: Drools Issue Type: Bug Environment: Wildfly 8.2.1, Standalone Reporter: Chad Poe Assignee: Mario Fusco Attachments: org.drools.test.beta-memory.zip This error was first discovered in a proprietary application that is running in wildfly 8.2.1. Up until now I was unable to reproduce outside of the mentioned environment. After narrowing down the exact conditions that cause the error to occur I was able to create a sample project that forces the issue to occur. Below is the stack trace: Caused by: java.lang.NullPointerException at org.drools.core.reteoo.BetaMemory.linkNode(BetaMemory.java:93) at org.drools.core.reteoo.BetaMemory.linkNode(BetaMemory.java:88) at org.drools.core.reteoo.SingleObjectSinkAdapter.staticDoLinkRiaNode(SingleObjectSinkAdapter.java:111) at org.drools.core.reteoo.SingleObjectSinkAdapter.doLinkRiaNode(SingleObjectSinkAdapter.java:93) at org.drools.core.reteoo.RiaPathMemory.doLinkRule(RiaPathMemory.java:52) at org.drools.core.reteoo.PathMemory.linkSegment(PathMemory.java:103) at org.drools.core.reteoo.SegmentMemory.notifyRuleLinkSegment(SegmentMemory.java:192) at org.drools.core.phreak.AddRemoveRule.addNewPaths(AddRemoveRule.java:452) at org.drools.core.phreak.AddRemoveRule.addRule(AddRemoveRule.java:123) at org.drools.core.reteoo.builder.ReteooRuleBuilder.addSubRule(ReteooRuleBuilder.java:189) at org.drools.core.reteoo.builder.ReteooRuleBuilder.addRule(ReteooRuleBuilder.java:133) at org.drools.core.reteoo.ReteooBuilder.addRule(ReteooBuilder.java:110) at org.drools.core.impl.KnowledgeBaseImpl.internalAddRule(KnowledgeBaseImpl.java:1530) at org.drools.core.impl.KnowledgeBaseImpl.lambda$addRules$4(KnowledgeBaseImpl.java:1523) at org.drools.core.impl.KnowledgeBaseImpl.enqueueModification(KnowledgeBaseImpl.java:734) at org.drools.core.impl.KnowledgeBaseImpl.addRules(KnowledgeBaseImpl.java:1521) at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.compileRete(KnowledgeBuilderImpl.java:1010) at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.buildRules(KnowledgeBuilderImpl.java:2524) at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.buildPackages(KnowledgeBuilderImpl.java:2450) at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.buildPackages(CompositeKnowledgeBuilderImpl.java:109) at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.build(CompositeKnowledgeBuilderImpl.java:99) at org.drools.compiler.kie.builder.impl.KieContainerImpl.rebuildAll(KieContainerImpl.java:473) at org.drools.compiler.kie.builder.impl.KieContainerImpl.updateKBase(KieContainerImpl.java:309) at org.drools.compiler.kie.builder.impl.KieContainerImpl.lambda$update$0(KieContainerImpl.java:260) at org.drools.core.impl.KnowledgeBaseImpl.enqueueModification(KnowledgeBaseImpl.java:734) at org.drools.compiler.kie.builder.impl.KieContainerImpl.update(KieContainerImpl.java:260) at org.drools.compiler.kie.builder.impl.KieContainerImpl.updateToVersion(KieContainerImpl.java:199) at org.drools.test.KieRuntimeManager.buildOnKfs(KieRuntimeManager.java:202) at org.drools.test.KieRuntimeManager.loadRule(KieRuntimeManager.java:147) at org.drools.test.DroolsReasonerContainer.loadRule(DroolsReasonerContainer.java:22) at org.drools.test.App.main(App.java:22) ... 6 more