Could you post the full test case (rules + java)? Thanks Davide On 01/28/2014 05:10 PM, jhusby wrote: > I'm trying to stress-test Drools to see what its limits are, and I stumbled > across a NPE when I have a large amount of facts in a stateful > knowledgebase: > > java.lang.NullPointerException > at > org.drools.core.phreak.PhreakTimerNode.doPropagateChildLeftTuple(PhreakTimerNode.java:355) > at > org.drools.core.phreak.PhreakTimerNode.doPropagateChildLeftTuples(PhreakTimerNode.java:325) > at > org.drools.core.phreak.PhreakTimerNode.doNode(PhreakTimerNode.java:72) > at > org.drools.core.phreak.RuleNetworkEvaluator.innerEval(RuleNetworkEvaluator.java:357) > 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:200) > at > org.drools.core.phreak.RuleExecutor.evaluateNetworkAndFire(RuleExecutor.java:67) > at > org.drools.core.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:935) > at > org.drools.core.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1200) > at > org.drools.core.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:957) > at > org.drools.core.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:931) > at > org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:256) > > I have a little program that creates, populates, fires, and destroys a > session repeatedly. With 10K objects in the knowledge base, I get the NPE > the first time I loop through my program, but not subsequently (probably > because by the subsequent executions things have been cached). With 100K > objects, I get the exception most times. With 1M objects, I get the NPE > every time. > > Am I doing anything wrong or is it simply taking so long to execute all the > rules that something times out? Is there a timeout param I could set? > > Thank you! > > Joseph > > > > -- > View this message in context: > http://drools.46999.n3.nabble.com/Null-Pointer-Exception-with-10K-kBase-objects-tp4027887.html > Sent from the Drools: User forum mailing list archive at Nabble.com. > _______________________________________________ > rules-users mailing list > rules-users@lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users >
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