Dear all,
I found a one of the ActiveMQ thread got stuck unexpectedly for several days. Customer was very angry to the ActiveMQ for the bad behavior. Did anybody experienced this issue? It would be much appreciated if any clue!!! My application is normal Java JMS application like the following: new ActiveMQConnectionFactory. create Connection; conn.start. create session. create destination, producer and message send messages commit; conn.close. The follows is the stack when I looked into it with debug tools: sun.misc.Unsafe.park(Native Method) java.util.concurrent.locks.LockSupport.park(LockSupport.java:169) java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1787) java.util.concurrent.ArrayBlockingQueue.take(ArrayBlockingQueue.java:356) org.apache.activemq.transport.FutureResponse.getResult(FutureResponse.java:40) org.apache.activemq.transport.ResponseCorrelator.request(ResponseCorrelator.java:80) org.apache.activemq.ActiveMQConnection.syncSendPacket(ActiveMQConnection.java:1233) org.apache.activemq.ActiveMQConnection.ensureConnectionInfoSent(ActiveMQConnection.java:1339) org.apache.activemq.ActiveMQConnection.start(ActiveMQConnection.java:488) nc.bs.mqv2.mmgp.mq.UFMQProcessor.getConnection(UFMQProcessor.java:487) nc.bs.mqv2.mmgp.mq.UFMQProcessor.getConnection(UFMQProcessor.java:462) nc.bs.mqv2.mmgp.mq.UFMQProcessor.sendSerializedObjMsg(UFMQProcessor.java:128) nc.bs.mqv2.meam.mq.sendbasedatas.AbstractMeamBDSyncService.sendBaseData(AbstractMeamBDSyncService.java:64) nc.bs.mqv2.mes.bd.mq.basedoc.AbstractBDServerSendService.dosendDataProcess(AbstractBDServerSendService.java:213) nc.bs.mqv2.mes.bd.mq.basedoc.AbstractBDServerSendService.sendDatas(AbstractBDServerSendService.java:62) nc.impl.mqv2.mes.bd.mq.SyncSendServiceImpl.ncserverSendDatas(SyncSendServiceImpl.java:58) nc.gejb.meam.cmt.MeamEjbBean.ncserverSendDatas(MeamEjbBean.java:8741) nc.gejb.meam.cmt.EJSLocalStatelessnc_gejb_meam_cmt_Meam_b44269e7.ncserverSendDatas(Unknown Source) sun.reflect.GeneratedMethodAccessor447.invoke(Unknown Source) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) java.lang.reflect.Method.invoke(Method.java:615) nc.bs.framework.ejb.AbstractEJBServiceHandler.invoke(AbstractEJBServiceHandler.java:56) nc.bs.framework.ejb.AbstractEJBServiceHandler.invoke(AbstractEJBServiceHandler.java:34) $Proxy58.ncserverSendDatas(Unknown Source) nc.bs.mqv2.meam.mq.task.DoSendBaseDataTaskUtil.runTask(DoSendBaseDataTaskUtil.java:63) nc.bs.mqv2.meam.mq.task.NCServerBaseDatasSendTask.executeTask(NCServerBaseDatasSendTask.java:26) nc.bs.pub.taskcenter.BgBizsPluginProcess.callBusinessPlugin(BgBizsPluginProcess.java:43) nc.bs.pub.pa.read.TaskBodyBase.callBizsPlugin(TaskBodyBase.java:188) nc.bs.pub.pa.read.TaskBodyBase.callBusinessPlugin(TaskBodyBase.java:174) nc.bs.pub.pa.read.TaskBodyBase.createMetaMsg(TaskBodyBase.java:95) nc.bs.pub.pa.read.TaskBodyBase.createAndSendMessage(TaskBodyBase.java:41) nc.bs.pub.taskcenter.BackgroundTaskBody.execute(BackgroundTaskBody.java:47) nc.impl.uap.scheduler.ExecutorServiceImpl.executeTask_RequiresNew(ExecutorServiceImpl.java:27) nc.itf.uap.mw.MwBizEJBEjbBean.executeTask_RequiresNew(MwBizEJBEjbBean.java:1682) nc.itf.uap.mw.EJSLocalStatelessnc_itf_uap_mw_MwBizEJB_f98e92a8.executeTask_RequiresNew(Unknown Source) sun.reflect.GeneratedMethodAccessor1036.invoke(Unknown Source) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) java.lang.reflect.Method.invoke(Method.java:615) nc.bs.framework.ejb.AbstractEJBServiceHandler.invoke(AbstractEJBServiceHandler.java:56) nc.bs.framework.ejb.AbstractEJBServiceHandler.invoke(AbstractEJBServiceHandler.java:34) $Proxy39.executeTask_RequiresNew(Unknown Source) nc.bs.uap.scheduler.impl.TaskExecutor.executeTask(TaskExecutor.java:110) nc.bs.uap.scheduler.impl.TaskExecutor.run(TaskExecutor.java:75) nc.bs.framework.execute.Executor$1.run(Executor.java:80) nc.bs.framework.execute.commonj.impl.WorkAdaptor.run(WorkAdaptor.java:29) com.ibm.ws.asynchbeans.J2EEContext.run(J2EEContext.java:1114) com.ibm.ws.asynchbeans.WorkWithExecutionContextImpl.go(WorkWithExecutionContextImpl.java:195) com.ibm.ws.asynchbeans.CJWorkItemImpl.run(CJWorkItemImpl.java:187) com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1469) Best regards, Zhuran Li
