NullPointerException in drools core ------------------------------------ Key: DROOLS-2171 URL: https://issues.jboss.org/browse/DROOLS-2171 Project: Drools Issue Type: Bug Reporter: Yun Lin Assignee: Mario Fusco Priority: Critical Labels: downstream_dependency After running for a couple hours, it got the follow NPE. java.lang.NullPointerException: null at org.drools.core.common.TupleSetsImpl.setNextTuple(TupleSetsImpl.java:349) ~[drools-core-7.4.1.Final.jar:7.4.1.Final] at org.drools.core.common.TupleSetsImpl.removeUpdate(TupleSetsImpl.java:205) ~[drools-core-7.4.1.Final.jar:7.4.1.Final] at org.drools.core.common.TupleSetsImpl.addDelete(TupleSetsImpl.java:110) ~[drools-core-7.4.1.Final.jar:7.4.1.Final] at org.drools.core.phreak.SegmentPropagator.processPeerDeletes(SegmentPropagator.java:109) ~[drools-core-7.4.1.Final.jar:7.4.1.Final] at org.drools.core.phreak.SegmentPropagator.processPeers(SegmentPropagator.java:48) ~[drools-core-7.4.1.Final.jar:7.4.1.Final] at org.drools.core.phreak.SegmentPropagator.propagate(SegmentPropagator.java:41) ~[drools-core-7.4.1.Final.jar:7.4.1.Final] at org.drools.core.phreak.RuleNetworkEvaluator.innerEval(RuleNetworkEvaluator.java:347) ~[drools-core-7.4.1.Final.jar:7.4.1.Final] at org.drools.core.phreak.RuleNetworkEvaluator.outerEval(RuleNetworkEvaluator.java:169) ~[drools-core-7.4.1.Final.jar:7.4.1.Final] at org.drools.core.phreak.RuleNetworkEvaluator.evaluateNetwork(RuleNetworkEvaluator.java:127) ~[drools-core-7.4.1.Final.jar:7.4.1.Final] at org.drools.core.phreak.RuleExecutor.reEvaluateNetwork(RuleExecutor.java:212) ~[drools-core-7.4.1.Final.jar:7.4.1.Final] at org.drools.core.phreak.RuleExecutor.evaluateNetworkAndFire(RuleExecutor.java:87) ~[drools-core-7.4.1.Final.jar:7.4.1.Final] at org.drools.core.concurrent.AbstractRuleEvaluator.internalEvaluateAndFire(AbstractRuleEvaluator.java:34) ~[drools-core-7.4.1.Final.jar:7.4.1.Final] at org.drools.core.concurrent.SequentialRuleEvaluator.evaluateAndFire(SequentialRuleEvaluator.java:43) ~[drools-core-7.4.1.Final.jar:7.4.1.Final] at org.drools.core.common.DefaultAgenda.fireLoop(DefaultAgenda.java:1067) ~[drools-core-7.4.1.Final.jar:7.4.1.Final] at org.drools.core.common.DefaultAgenda.internalFireAllRules(DefaultAgenda.java:1014) ~[drools-core-7.4.1.Final.jar:7.4.1.Final] at org.drools.core.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1006) ~[drools-core-7.4.1.Final.jar:7.4.1.Final] at org.drools.core.impl.StatefulKnowledgeSessionImpl.internalFireAllRules(StatefulKnowledgeSessionImpl.java:1320) ~[drools-core-7.4.1.Final.jar:7.4.1.Final] at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1311) ~[drools-core-7.4.1.Final.jar:7.4.1.Final] at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1299) ~[drools-core-7.4.1.Final.jar:7.4.1.Final]