我有一个调用kieSession.fireUntilHalt的守护程序线程。事实是从其他线程（http）插入的。
在某些时候，'射击'线程进入“等待”状态并且永远不会返回。因此插入线程的其他事实在此线程上被阻止。
规则触发线程堆栈：
at sun.misc.Unsafe.park(Native Method)
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:834)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:867)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1197)
at java.util.concurrent.locks.ReentrantReadWriteLock$WriteLock.lock(ReentrantReadWriteLock.java:945)
at org.drools.core.common.UpgradableReentrantReadWriteLock.lowPriorityWriteLock(UpgradableReentrantReadWriteLock.java:109)
at org.drools.core.common.UpgradableReentrantReadWriteLock.writeLock(UpgradableReentrantReadWriteLock.java:95)
at org.drools.core.impl.KnowledgeBaseImpl.lock(KnowledgeBaseImpl.java:684)
at org.drools.core.reteoo.builder.PatternBuilder.attachObjectTypeNode(PatternBuilder.java:275)
at org.drools.core.reteoo.ClassObjectTypeConf. (ClassObjectTypeConf.java:107)
at org.drools.core.common.ObjectTypeConfigurationRegistry.getObjectTypeConf(ObjectTypeConfigurationRegistry.java:72)
at org.drools.core.reteoo.AccumulateNode.createResultFactHandle(AccumulateNode.java:149)
at org.drools.core.phreak.PhreakAccumulateNode.evaluateResultConstraints(PhreakAccumulateNode.java:683)
at org.drools.core.phreak.PhreakAccumulateNode.doNode(PhreakAccumulateNode.java:89)
at org.drools.core.phreak.RuleNetworkEvaluator.switchOnDoBetaNode(RuleNetworkEvaluator.java:563)
at org.drools.core.phreak.RuleNetworkEvaluator.evalBetaNode(RuleNetworkEvaluator.java:534)
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.evaluateNetwork(RuleExecutor.java:77)
- locked [0x00000000fe586af0] (a org.drools.core.phreak.RuleExecutor)
at org.drools.core.common.DefaultAgenda.evaluateEagerList(DefaultAgenda.java:990)
- locked [0x000000008ad60cd8] (a java.util.LinkedList)
at org.drools.core.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:945)
at org.drools.core.common.DefaultAgenda.fireUntilHalt(DefaultAgenda.java:1190)
at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireUntilHalt(StatefulKnowledgeSessionImpl.java:1283)
at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireUntilHalt(StatefulKnowledgeSessionImpl.java:1260)
at com.comp.narch.lfc.decision.rules.util.FireUntilHaltSpawn.call(FireUntilHaltSpawn.java:21)
at com.comp.narch.lfc.decision.rules.util.FireUntilHaltSpawn.call(FireUntilHaltSpawn.java:11)
事实插入线程（已阻止）堆栈：
at org.drools.core.common.DefaultAgenda.addEagerRuleAgendaItem(DefaultAgenda.java:282)
- waiting to lock [0x000000008ad60cd8] (a java.util.LinkedList)
at org.drools.core.reteoo.PathMemory.queueRuleAgendaItem(PathMemory.java:153)
at org.drools.core.reteoo.PathMemory.doLinkRule(PathMemory.java:120)
- locked [0x00000000fe586928] (a org.drools.core.reteoo.PathMemory)
at org.drools.core.reteoo.PathMemory.linkSegment(PathMemory.java:90)
at org.drools.core.reteoo.SegmentMemory.notifyRuleLinkSegment(SegmentMemory.java:170)
at org.drools.core.reteoo.LeftInputAdapterNode$LiaNodeMemory.setNodeDirty(LeftInputAdapterNode.java:647)
at org.drools.core.reteoo.LeftInputAdapterNode.doInsertSegmentMemory(LeftInputAdapterNode.java:277)
at org.drools.core.reteoo.LeftInputAdapterNode.doInsertObject(LeftInputAdapterNode.java:229)
at org.drools.core.reteoo.LeftInputAdapterNode.assertObject(LeftInputAdapterNode.java:197)
at org.drools.core.reteoo.CompositeObjectSinkAdapter.doPropagateAssertObject(CompositeObjectSinkAdapter.java:502)
at org.drools.core.reteoo.CompositeObjectSinkAdapter.propagateAssertObject(CompositeObjectSinkAdapter.java:387)
at org.drools.core.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:288)
at org.drools.core.reteoo.EntryPointNode.assertObject(EntryPointNode.java:251)
at org.drools.core.common.NamedEntryPoint.insert(NamedEntryPoint.java:367)
at org.drools.core.common.NamedEntryPoint.insert(NamedEntryPoint.java:286)
at org.drools.core.impl.StatefulKnowledgeSessionImpl.insert(StatefulKnowledgeSessionImpl.java:1430)
at org.drools.core.impl.StatefulKnowledgeSessionImpl.insert(StatefulKnowledgeSessionImpl.java:1372)
at com.comp.narch.lfc.service.impl.DefaultServiceInstanceMgmtServiceImpl.newAppMetric(DefaultServiceInstanceMgmtServiceImpl.java:84)
Drools Version - 6.1.0.Final