需要帮助解释Java线程转储

Question

最近有一个应用程序停顿。转储中有一个线程如下所示。这是否意味着该线程中存在死锁？还是这是正常状态？

"DispatchThread: [com.ibm.mq.jmqi.remote.impl.RemoteSession[:/28dd1d5b][connectionId=414D5143424E535341434920202020205DD7618B2D0AD502]]" daemon prio=3 tid=0x0000000008001800 nid=0x56 in Object.wait() [0xfffffc7fde379000]
   java.lang.Thread.State: TIMED_WAITING (on object monitor)
        at java.lang.Object.wait(Native Method)
        - waiting on <0xfffffc7bc3b048b8> (a com.ibm.mq.jmqi.remote.impl.RemoteDispatchThread$SleepingEventSync)
        at com.ibm.mq.jmqi.remote.impl.RemoteDispatchThread.waitOnSleepingEvent(RemoteDispatchThread.java:122)
        - locked <0xfffffc7bc3b048b8> (a com.ibm.mq.jmqi.remote.impl.RemoteDispatchThread$SleepingEventSync)
        at com.ibm.mq.jmqi.remote.impl.RemoteDispatchThread.sleepPhase(RemoteDispatchThread.java:605)
        at com.ibm.mq.jmqi.remote.impl.RemoteDispatchThread.run(RemoteDispatchThread.java:359)
        ...
        at com.ibm.msg.client.commonservices.j2se.workqueue.WorkQueueManagerImplementation$ThreadPoolWorker.run(WorkQueueManagerImplementation.java:1227)

   Locked ownable synchronizers:
        - None

该代码在应用程序使用的MQ JMS驱动程序中。最后两种方法是：

private void sleepPhase() {
    if (Trace.isOn) {
        Trace.entry(this, "com.ibm.mq.jmqi.remote.impl.RemoteDispatchThread", "sleepPhase()");
    }
    if (this.flightRecorder.isOn) {
        this.flightRecorder.entry("RemoteDispatchThread.sleepPhase");
    }
    do {
        boolean posted;
        if (posted = this.noMsgsWait != 0 ? this.waitOnSleepingEvent(this.noMsgsWait) : (this.hconnActive ? this.waitOnSleepingEvent(2000) : this.waitOnSleepingEvent(30000))) {
            if (this.flightRecorder.isOn) {
                this.flightRecorder.exit("RemoteDispatchThread.sleepPhase (posted)");
            }
            if (!Trace.isOn) break;
            Trace.data(this, "sleepPhase (return (posted))", (Object)null);
            break;
        }
        if (this.noMsgsWait != 0) {
            if (this.flightRecorder.isOn) {
                this.flightRecorder.exit("RemoteDispatchThread.sleepPhase (noMsgsWait)");
            }
            if (!Trace.isOn) break;
            Trace.data(this, "sleepPhase (return (noMsgsWait))", (Object)null);
            break;
        }
        this.hconn.requestThreadLock();
        try {
            if (this.savedDispatchSeq != this.dispatchSeq) {
                if (Trace.isOn) {
                    Trace.exit((Object)this, "com.ibm.mq.jmqi.remote.impl.RemoteDispatchThread", "sleepPhase()", 1);
                }
                return;
            }
            if (this.hconnActive) continue;
            if (this.flightRecorder.isOn) {
                this.flightRecorder.exit("RemoteDispatchThread.sleepPhase (hconn inactive)");
            }
            if (Trace.isOn) {
                Trace.data(this, "sleepPhase (hconn inactive)", (Object)null);
            }
            this.hconn.setDispatchThread(null);
            this.exitThread = true;
        }
        finally {
            if (Trace.isOn) {
                Trace.finallyBlock(this, "com.ibm.mq.jmqi.remote.impl.RemoteDispatchThread", "sleepPhase()");
            }
            this.hconn.releaseThreadLock();
            continue;
        }
        break;
    } while (true);
    if (Trace.isOn) {
        Trace.exit((Object)this, "com.ibm.mq.jmqi.remote.impl.RemoteDispatchThread", "sleepPhase()", 2);
    }
}


private class SleepingEventSync {
    SleepingEventSync() {
        if (Trace.isOn) {
            Trace.entry(this, "com.ibm.mq.jmqi.remote.impl.SleepingEventSync", "<init>()");
        }
        if (Trace.isOn) {
            Trace.exit(this, "com.ibm.mq.jmqi.remote.impl.SleepingEventSync", "<init>()");
        }
    }
}

最近进行了MQ升级，我将MQ客户端jar复制到了应用程序中。