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From osian <os...@osian.me.uk>
Subject Broker Hung With Following VM Dump
Date Tue, 16 May 2006 13:34:06 GMT

My broker seems to hang readily, and I have just found out how to dump the
jvm i.e. using ctrl-break, and here is the result (is this a known issue, or
a config issue?):

Full thread dump Java HotSpot(TM) Client VM (1.5.0-b64 mixed mode, sharing):

"tcp:///172.16.15.64:2229" daemon prio=9 tid=0x032a5ce0 nid=0x1554 in
Object.wait() [0x0494f000..0x0494fc68]
        at java.lang.Object.wait(Native Method)
        at java.lang.Object.wait(Object.java:474)
        at
org.apache.activemq.memory.UsageManager.waitForSpace(UsageManager.java:85)
        - locked <0x092a3698> (a java.lang.Object)
        at
org.apache.activemq.memory.UsageManager.waitForSpace(UsageManager.java:82)
        at org.apache.activemq.broker.region.Queue.send(Queue.java:248)
        at
org.apache.activemq.broker.region.AbstractRegion.send(AbstractRegion.java:195)
        at
org.apache.activemq.broker.region.RegionBroker.send(RegionBroker.java:320)
        at
org.apache.activemq.broker.TransactionBroker.send(TransactionBroker.java:192)
        at
org.apache.activemq.broker.BrokerFilter.send(BrokerFilter.java:109)
        at
org.apache.activemq.broker.CompositeDestinationBroker.send(CompositeDestinationBroker.java:97)
        at
org.apache.activemq.broker.MutableBrokerFilter.send(MutableBrokerFilter.java:121)
        at
org.apache.activemq.broker.AbstractConnection.processMessage(AbstractConnection.java:346)
        at
org.apache.activemq.command.ActiveMQMessage.visit(ActiveMQMessage.java:590)
        at
org.apache.activemq.broker.AbstractConnection.service(AbstractConnection.java:196)
        at
org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:62)
        at
org.apache.activemq.transport.ResponseCorrelator.onCommand(ResponseCorrelator.java:93)
        at
org.apache.activemq.transport.TransportFilter.onCommand(TransportFilter.java:70)
        at
org.apache.activemq.transport.WireFormatNegotiator.onCommand(WireFormatNegotiator.java:114)
        at
org.apache.activemq.transport.InactivityMonitor.onCommand(InactivityMonitor.java:122)
        at
org.apache.activemq.transport.TransportSupport.doConsume(TransportSupport.java:87)
        at
org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:139)
        at java.lang.Thread.run(Thread.java:595)

"tcp:///172.16.15.64:2218" daemon prio=9 tid=0x030d5328 nid=0x17c0 runnable
[0x048df000..0x048dfce8]
        at java.net.SocketInputStream.socketRead0(Native Method)
        at java.net.SocketInputStream.read(SocketInputStream.java:129)
        at
org.apache.activemq.transport.tcp.TcpBufferedInputStream.fill(TcpBufferedInputStream.java:48)
        at
org.apache.activemq.transport.tcp.TcpBufferedInputStream.read(TcpBufferedInputStream.java:55)
        at java.io.DataInputStream.readInt(DataInputStream.java:353)
        at
org.apache.activemq.openwire.OpenWireFormat.unmarshal(OpenWireFormat.java:270)
        at
org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:138)
        at java.lang.Thread.run(Thread.java:595)

"ActiveMQ Scheduler" daemon prio=9 tid=0x0336a120 nid=0x2f4 in Object.wait()
[0x0486f000..0x0486fd68]
        at java.lang.Object.wait(Native Method)
        at java.lang.Object.wait(Object.java:432)
        at
edu.emory.mathcs.backport.java.util.concurrent.TimeUnit.timedWait(TimeUnit.java:301)
        at
edu.emory.mathcs.backport.java.util.concurrent.DelayQueue.take(DelayQueue.java:156)
        - locked <0x092f04f8> (a java.lang.Object)
        at
edu.emory.mathcs.backport.java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java
:590)
        at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:477)
        at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:674)
        at java.lang.Thread.run(Thread.java:595)

"tcp:///172.16.15.1:2005" daemon prio=9 tid=0x030cf618 nid=0xe58 runnable
[0x03c3f000..0x03c3f9e8]
        at java.net.SocketInputStream.socketRead0(Native Method)
        at java.net.SocketInputStream.read(SocketInputStream.java:129)
        at
org.apache.activemq.transport.tcp.TcpBufferedInputStream.fill(TcpBufferedInputStream.java:48)
        at
org.apache.activemq.transport.tcp.TcpBufferedInputStream.read(TcpBufferedInputStream.java:55)
        at java.io.DataInputStream.readInt(DataInputStream.java:353)
        at
org.apache.activemq.openwire.OpenWireFormat.unmarshal(OpenWireFormat.java:270)
        at
org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:138)
        at java.lang.Thread.run(Thread.java:595)

"ActiveMQ Scheduler" daemon prio=9 tid=0x032d12b0 nid=0x14c8 in
Object.wait() [0x03b8f000..0x03b8fa68]
        at java.lang.Object.wait(Native Method)
        at java.lang.Object.wait(Object.java:432)
        at
edu.emory.mathcs.backport.java.util.concurrent.TimeUnit.timedWait(TimeUnit.java:301)
        at
edu.emory.mathcs.backport.java.util.concurrent.DelayQueue.take(DelayQueue.java:156)
        - locked <0x092f04f8> (a java.lang.Object)
        at
edu.emory.mathcs.backport.java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java
:590)
        at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:477)
        at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:674)
        at java.lang.Thread.run(Thread.java:595)

"ActiveMQ Scheduler" daemon prio=9 tid=0x0336f310 nid=0xab4 in Object.wait()
[0x03acf000..0x03acfae8]
        at java.lang.Object.wait(Native Method)
        at java.lang.Object.wait(Object.java:432)
        at
edu.emory.mathcs.backport.java.util.concurrent.TimeUnit.timedWait(TimeUnit.java:301)
        at
edu.emory.mathcs.backport.java.util.concurrent.DelayQueue.take(DelayQueue.java:156)
        - locked <0x092f04f8> (a java.lang.Object)
        at
edu.emory.mathcs.backport.java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java
:590)
        at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:477)
        at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:674)
        at java.lang.Thread.run(Thread.java:595)

"tcp:///172.16.15.4:3045" daemon prio=9 tid=0x03368f40 nid=0x10d8 in
Object.wait() [0x039ef000..0x039efb68]
        at java.lang.Object.wait(Native Method)
        at java.lang.Object.wait(Object.java:474)
        at
org.apache.activemq.memory.UsageManager.waitForSpace(UsageManager.java:85)
        - locked <0x092a3698> (a java.lang.Object)
        at
org.apache.activemq.memory.UsageManager.waitForSpace(UsageManager.java:82)
        at org.apache.activemq.broker.region.Queue.send(Queue.java:248)
        at
org.apache.activemq.broker.region.AbstractRegion.send(AbstractRegion.java:195)
        at
org.apache.activemq.broker.region.RegionBroker.send(RegionBroker.java:320)
        at
org.apache.activemq.broker.TransactionBroker.send(TransactionBroker.java:192)
        at
org.apache.activemq.broker.BrokerFilter.send(BrokerFilter.java:109)
        at
org.apache.activemq.broker.CompositeDestinationBroker.send(CompositeDestinationBroker.java:97)
        at
org.apache.activemq.broker.MutableBrokerFilter.send(MutableBrokerFilter.java:121)
        at
org.apache.activemq.broker.AbstractConnection.processMessage(AbstractConnection.java:346)
        at
org.apache.activemq.command.ActiveMQMessage.visit(ActiveMQMessage.java:590)
        at
org.apache.activemq.broker.AbstractConnection.service(AbstractConnection.java:196)
        at
org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:62)
        at
org.apache.activemq.transport.ResponseCorrelator.onCommand(ResponseCorrelator.java:93)
        at
org.apache.activemq.transport.TransportFilter.onCommand(TransportFilter.java:70)
        at
org.apache.activemq.transport.WireFormatNegotiator.onCommand(WireFormatNegotiator.java:114)
        at
org.apache.activemq.transport.InactivityMonitor.onCommand(InactivityMonitor.java:122)
        at
org.apache.activemq.transport.TransportSupport.doConsume(TransportSupport.java:87)
        at
org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:139)
        at java.lang.Thread.run(Thread.java:595)

"ActiveMQ Scheduler" daemon prio=9 tid=0x0325d710 nid=0x1794 in
Object.wait() [0x047cf000..0x047cfbe8]
        at java.lang.Object.wait(Native Method)
        at java.lang.Object.wait(Object.java:432)
        at
edu.emory.mathcs.backport.java.util.concurrent.TimeUnit.timedWait(TimeUnit.java:301)
        at
edu.emory.mathcs.backport.java.util.concurrent.DelayQueue.take(DelayQueue.java:156)
        - locked <0x092f04f8> (a java.lang.Object)
        at
edu.emory.mathcs.backport.java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java
:590)
        at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:477)
        at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:674)
        at java.lang.Thread.run(Thread.java:595)

"ActiveMQ Scheduler" daemon prio=9 tid=0x031c77f8 nid=0xf50 in Object.wait()
[0x0478f000..0x0478fc68]
        at java.lang.Object.wait(Native Method)
        at java.lang.Object.wait(Object.java:432)
        at
edu.emory.mathcs.backport.java.util.concurrent.TimeUnit.timedWait(TimeUnit.java:301)
        at
edu.emory.mathcs.backport.java.util.concurrent.DelayQueue.take(DelayQueue.java:156)
        - locked <0x092f04f8> (a java.lang.Object)
        at
edu.emory.mathcs.backport.java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java
:590)
        at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:477)
        at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:674)
        at java.lang.Thread.run(Thread.java:595)

"tcp:///127.0.0.1:4614" daemon prio=9 tid=0x031c7d58 nid=0x16d0 in
Object.wait() [0x0471f000..0x0471fce8]
        at java.lang.Object.wait(Native Method)
        at java.lang.Object.wait(Object.java:474)
        at
org.apache.activemq.memory.UsageManager.waitForSpace(UsageManager.java:85)
        - locked <0x092a3698> (a java.lang.Object)
        at
org.apache.activemq.memory.UsageManager.waitForSpace(UsageManager.java:82)
        at org.apache.activemq.broker.region.Queue.send(Queue.java:248)
        at
org.apache.activemq.broker.region.AbstractRegion.send(AbstractRegion.java:195)
        at
org.apache.activemq.broker.region.RegionBroker.send(RegionBroker.java:320)
        at
org.apache.activemq.broker.TransactionBroker.send(TransactionBroker.java:192)
        at
org.apache.activemq.broker.BrokerFilter.send(BrokerFilter.java:109)
        at
org.apache.activemq.broker.CompositeDestinationBroker.send(CompositeDestinationBroker.java:97)
        at
org.apache.activemq.broker.MutableBrokerFilter.send(MutableBrokerFilter.java:121)
        at
org.apache.activemq.broker.AbstractConnection.processMessage(AbstractConnection.java:346)
        at
org.apache.activemq.command.ActiveMQMessage.visit(ActiveMQMessage.java:590)
        at
org.apache.activemq.broker.AbstractConnection.service(AbstractConnection.java:196)
        at
org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:62)
        at
org.apache.activemq.transport.ResponseCorrelator.onCommand(ResponseCorrelator.java:93)
        at
org.apache.activemq.transport.TransportFilter.onCommand(TransportFilter.java:70)
        at
org.apache.activemq.transport.WireFormatNegotiator.onCommand(WireFormatNegotiator.java:114)
        at
org.apache.activemq.transport.InactivityMonitor.onCommand(InactivityMonitor.java:122)
        at
org.apache.activemq.transport.TransportSupport.doConsume(TransportSupport.java:87)
        at
org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:139)
        at java.lang.Thread.run(Thread.java:595)

"Multicast Discovery Agent Notifier" daemon prio=5 tid=0x033b76e8 nid=0xfe0
in Object.wait() [0x0468f000..0x0468fd68]
        at java.lang.Object.wait(Native Method)
        - waiting on <0x0926f6c0> (a
edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue$SerializableLock)
        at java.lang.Object.wait(Object.java:474)
        at
edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:315)
        - locked <0x0926f6c0> (a
edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue$SerializableLock)
        at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:477)
        at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:674)
        at java.lang.Thread.run(Thread.java:595)

"MulticastDiscovery: null" daemon prio=5 tid=0x033f5660 nid=0x1108 runnable
[0x0461f000..0x0461f9e8]
        at java.net.PlainDatagramSocketImpl.receive0(Native Method)
        at
java.net.PlainDatagramSocketImpl.receive(PlainDatagramSocketImpl.java:136)
        - locked <0x092f28c0> (a java.net.PlainDatagramSocketImpl)
        at java.net.DatagramSocket.receive(DatagramSocket.java:712)
        - locked <0x092f2900> (a java.net.DatagramPacket)
        - locked <0x092f2920> (a java.net.MulticastSocket)
        at
org.apache.activemq.transport.discovery.multicast.MulticastDiscoveryAgent.run(MulticastDiscoveryAgent.java:254)
        at java.lang.Thread.run(Thread.java:595)

"Transport Status Dector
org.apache.activemq.broker.jmx.ManagedTransportConnector@7a1576" daemon
prio=9 tid=0x03c774a8 nid=0xcc waiting on c
ondition [0x045af000..0x045afa68]
        at java.lang.Thread.sleep(Native Method)
        at
org.apache.activemq.broker.TransportStatusDetector.run(TransportStatusDetector.java:98)
        at java.lang.Thread.run(Thread.java:595)

"MulticastDiscovery: tcp://O-Hughes:61616" daemon prio=5 tid=0x033dcd18
nid=0x10c4 runnable [0x0453f000..0x0453fae8]
        at java.net.PlainDatagramSocketImpl.receive0(Native Method)
        at
java.net.PlainDatagramSocketImpl.receive(PlainDatagramSocketImpl.java:136)
        - locked <0x092ed508> (a java.net.PlainDatagramSocketImpl)
        at java.net.DatagramSocket.receive(DatagramSocket.java:712)
        - locked <0x092f49c0> (a java.net.DatagramPacket)
        - locked <0x092ed548> (a java.net.MulticastSocket)
        at
org.apache.activemq.transport.discovery.multicast.MulticastDiscoveryAgent.run(MulticastDiscoveryAgent.java:254)
        at java.lang.Thread.run(Thread.java:595)

"TcpTransportServer@tcp://O-Hughes:61616" daemon prio=9 tid=0x03c60d08
nid=0x1474 runnable [0x044cf000..0x044cfb68]
        at java.net.PlainSocketImpl.socketAccept(Native Method)
        at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:384)
        - locked <0x092ed648> (a java.net.SocksSocketImpl)
        at java.net.ServerSocket.implAccept(ServerSocket.java:450)
        at java.net.ServerSocket.accept(ServerSocket.java:421)
        at
org.apache.activemq.transport.tcp.TcpTransportServer.run(TcpTransportServer.java:121)
        at java.lang.Thread.run(Thread.java:595)

"ActiveMQ Cleanup Timer" daemon prio=5 tid=0x032b8ba8 nid=0x3a0 in
Object.wait() [0x0352f000..0x0352fbe8]
        at java.lang.Object.wait(Native Method)
        at java.lang.Object.wait(Object.java:432)
        at
edu.emory.mathcs.backport.java.util.concurrent.TimeUnit.timedWait(TimeUnit.java:301)
        at
edu.emory.mathcs.backport.java.util.concurrent.DelayQueue.take(DelayQueue.java:156)
        - locked <0x092c2c98> (a java.lang.Object)
        at
edu.emory.mathcs.backport.java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java
:590)
        at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:477)
        at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:674)
        at java.lang.Thread.run(Thread.java:595)

"RMI LeaseChecker" daemon prio=5 tid=0x0336d0f0 nid=0xf4c waiting on
condition [0x03b3f000..0x03b3fc68]
        at java.lang.Thread.sleep(Native Method)
        at sun.rmi.transport.DGCImpl$LeaseChecker.run(DGCImpl.java:310)
        at java.lang.Thread.run(Thread.java:595)

"RMI RenewClean-[172.16.15.40:4603]" daemon prio=5 tid=0x02e5dc08 nid=0x125c
in Object.wait() [0x03a5f000..0x03a5fa68]
        at java.lang.Object.wait(Native Method)
        at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:116)
        - locked <0x092a75c0> (a java.lang.ref.ReferenceQueue$Lock)
        at
sun.rmi.transport.DGCClient$EndpointEntry$RenewCleanThread.run(DGCClient.java:500)
        at java.lang.Thread.run(Thread.java:595)

"GC Daemon" daemon prio=2 tid=0x0324bb48 nid=0x145c in Object.wait()
[0x035ef000..0x035efb68]
        at java.lang.Object.wait(Native Method)
        - waiting on <0x092a1580> (a sun.misc.GC$LatencyLock)
        at sun.misc.GC$Daemon.run(GC.java:100)
        - locked <0x092a1580> (a sun.misc.GC$LatencyLock)

"RMI Reaper" prio=5 tid=0x032b9988 nid=0x15dc in Object.wait()
[0x035af000..0x035afbe8]
        at java.lang.Object.wait(Native Method)
        - waiting on <0x09296c70> (a java.lang.ref.ReferenceQueue$Lock)
        at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:116)
        - locked <0x09296c70> (a java.lang.ref.ReferenceQueue$Lock)
        at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:132)
        at sun.rmi.transport.ObjectTable$Reaper.run(ObjectTable.java:336)
        at java.lang.Thread.run(Thread.java:595)

"RMI TCP Accept-0" daemon prio=5 tid=0x032b9008 nid=0x15e8 runnable
[0x0356f000..0x0356fc68]
        at java.net.PlainSocketImpl.socketAccept(Native Method)
        at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:384)
        - locked <0x092a5190> (a java.net.SocksSocketImpl)
        at java.net.ServerSocket.implAccept(ServerSocket.java:450)
        at java.net.ServerSocket.accept(ServerSocket.java:421)
        at sun.rmi.transport.tcp.TCPTransport.run(TCPTransport.java:334)
        at java.lang.Thread.run(Thread.java:595)

"RMI TCP Accept-1099" daemon prio=5 tid=0x03249590 nid=0x11f4 runnable
[0x034ef000..0x034efd68]
        at java.net.PlainSocketImpl.socketAccept(Native Method)
        at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:384)
        - locked <0x092949c0> (a java.net.SocksSocketImpl)
        at java.net.ServerSocket.implAccept(ServerSocket.java:450)
        at java.net.ServerSocket.accept(ServerSocket.java:421)
        at sun.rmi.transport.tcp.TCPTransport.run(TCPTransport.java:334)
        at java.lang.Thread.run(Thread.java:595)

"Timer-0" daemon prio=5 tid=0x030cdb40 nid=0xef8 in Object.wait()
[0x034af000..0x034af9e8]
        at java.lang.Object.wait(Native Method)
        - waiting on <0x09294ae0> (a java.util.TaskQueue)
        at java.lang.Object.wait(Object.java:474)
        at java.util.TimerThread.mainLoop(Timer.java:483)
        - locked <0x09294ae0> (a java.util.TaskQueue)
        at java.util.TimerThread.run(Timer.java:462)

"Low Memory Detector" daemon prio=5 tid=0x0031d220 nid=0x1650 runnable
[0x00000000..0x00000000]

"CompilerThread0" daemon prio=10 tid=0x0031bdf8 nid=0xf8c waiting on
condition [0x00000000..0x02d7f8c0]

"Signal Dispatcher" daemon prio=10 tid=0x0031b118 nid=0x1494 waiting on
condition [0x00000000..0x00000000]

"Finalizer" daemon prio=9 tid=0x00318520 nid=0xd28 in Object.wait()
[0x02cff000..0x02cffc68]
        at java.lang.Object.wait(Native Method)
        at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:116)
        - locked <0x091d2d90> (a java.lang.ref.ReferenceQueue$Lock)
        at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:132)
        at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:159)

"Reference Handler" daemon prio=10 tid=0x00317040 nid=0x1364 in
Object.wait() [0x02cbf000..0x02cbfce8]
        at java.lang.Object.wait(Native Method)
        - waiting on <0x091d2e10> (a java.lang.ref.Reference$Lock)
        at java.lang.Object.wait(Object.java:474)
        at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:116)
        - locked <0x091d2e10> (a java.lang.ref.Reference$Lock)

"main" prio=5 tid=0x00037d98 nid=0x1038 in Object.wait()
[0x0007f000..0x0007fc40]
        at java.lang.Object.wait(Native Method)
        - waiting on <0x092f49e0> (a [Z)
        at java.lang.Object.wait(Object.java:474)
        at
org.apache.activemq.console.command.StartCommand.waitForShutdown(StartCommand.java:106)
        - locked <0x092f49e0> (a [Z)
        at
org.apache.activemq.console.command.StartCommand.runTask(StartCommand.java:67)
        at
org.apache.activemq.console.command.AbstractCommand.execute(AbstractCommand.java:49)
        at
org.apache.activemq.console.command.ShellCommand.runTask(ShellCommand.java:64)
        at
org.apache.activemq.console.command.AbstractCommand.execute(AbstractCommand.java:49)
        at
org.apache.activemq.console.command.ShellCommand.main(ShellCommand.java:45)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at org.apache.activemq.console.Main.runTaskClass(Main.java:135)
        at org.apache.activemq.console.Main.main(Main.java:67)

"VM Thread" prio=10 tid=0x003147a0 nid=0x1098 runnable

"VM Periodic Task Thread" prio=10 tid=0x0031e470 nid=0x1240 waiting on
condition
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