Description of problem: java.lang.NoSuchMethodError: org.ovirt.engine.sdk.entities.Host.<init>(Ljava/lang/String;)V at ConditionEvaluator7ad7cabcb4cc4feaa9fe7f6b528b57b5.evaluate(Unknown Source) at org.drools.core.rule.constraint.MvelConstraint.evaluate(MvelConstraint.java:216) at org.drools.core.rule.constraint.MvelConstraint.isAllowedCachedLeft(MvelConstraint.java:185) at org.drools.core.common.SingleBetaConstraints.isAllowedCachedLeft(SingleBetaConstraints.java:134) at org.drools.core.phreak.PhreakAccumulateNode.doLeftInserts(PhreakAccumulateNode.java:165) at org.drools.core.phreak.PhreakAccumulateNode.doNode(PhreakAccumulateNode.java:81) at org.drools.core.phreak.RuleNetworkEvaluator.switchOnDoBetaNode(RuleNetworkEvaluator.java:562) at org.drools.core.phreak.RuleNetworkEvaluator.evalBetaNode(RuleNetworkEvaluator.java:533) at org.drools.core.phreak.RuleNetworkEvaluator.innerEval(RuleNetworkEvaluator.java:334) at org.drools.core.phreak.RuleNetworkEvaluator.outerEval(RuleNetworkEvaluator.java:161) at org.drools.core.phreak.RuleNetworkEvaluator.evaluateNetwork(RuleNetworkEvaluator.java:116) at org.drools.core.phreak.RuleExecutor.reEvaluateNetwork(RuleExecutor.java:193) at org.drools.core.phreak.RuleExecutor.evaluateNetworkAndFire(RuleExecutor.java:68) at org.drools.core.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:928) at org.drools.core.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1193) at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1202) at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1175) at org.optaplanner.core.impl.score.director.drools.DroolsScoreDirector.calculateScore(DroolsScoreDirector.java:92) at org.optaplanner.core.impl.solver.scope.DefaultSolverScope.calculateScore(DefaultSolverScope.java:111) at org.optaplanner.core.impl.phase.scope.AbstractPhaseScope.calculateScore(AbstractPhaseScope.java:124) at org.optaplanner.core.impl.constructionheuristic.decider.ConstructionHeuristicDecider.processMove(ConstructionHeuristicDecider.java:115) at org.optaplanner.core.impl.constructionheuristic.decider.ConstructionHeuristicDecider.doMove(ConstructionHeuristicDecider.java:104) at org.optaplanner.core.impl.constructionheuristic.decider.ConstructionHeuristicDecider.decideNextStep(ConstructionHeuristicDecider.java:77) at org.optaplanner.core.impl.constructionheuristic.DefaultConstructionHeuristicPhase.solve(DefaultConstructionHeuristicPhase.java:67) at org.optaplanner.core.impl.solver.DefaultSolver.runPhases(DefaultSolver.java:193) at org.optaplanner.core.impl.solver.DefaultSolver.solve(DefaultSolver.java:157) at org.ovirt.optimizer.service.problemspace.TestDroolsJITCrash.testCrash(TestDroolsJITCrash.java:65) Version-Release number of selected component (if applicable): Optaplanner 6.1.0-SNAPSHOT Drools snapshot Steps to Reproduce: 1. checkout snapshots of optaplanner and drools 2. mvn clean install both 3. clone https://MarSik@bitbucket.org/MarSik/ovirt-planner.git 4. git checkout droolsissue 5. mvn clean install Actual results: Test with reproducer fails. Expected results: Test succeeds.
The problem was caused by a badly written constraint trying to compare an object of type Host with a String. The jitted constraint was mistakenly trying to coerce the Host to a String. Fixed by https://github.com/droolsjbpm/drools/commit/81b4d5b36
The fix is working in BRMS 6.1.0.DR3. However, I had to extend the original unit test to properly reproduce the issue on older Drools versions. Please see PR https://github.com/droolsjbpm/drools/pull/385.
Verified that the fix is working in BRMS 6.1.0.DR3.