Has anyone seen the client lock up when connecting before ?

Hi Guys,

Has anyone had any experience with a client side lock up when trying to 
connect to an ActiveMQ server ? See stack trace below. Does any know a 
possible workaround or fix ?

Thanks, Nigel.


"VM Periodic Task Thread" prio=1 tid=0x0809f8c0 nid=0x3b0a waiting on 
condition
"Suspend Checker Thread" prio=1 tid=0x0809c730 nid=0x3b0a runnable
Full thread dump Java HotSpot(TM) Client VM (1.4.2_01-b06 mixed mode):

"TcpTransportChannel: 
Socket[addr=localhost/127.0.0.1,port=61616,localport=34980]" prio=1 
tid=0x08460618 nid=0x3b13 runnable [5d7b6000..5d7b6714]
      at java.net.SocketInputStream.socketRead0(Native Method)
      at java.net.SocketInputStream.read(SocketInputStream.java:129)
      at java.io.BufferedInputStream.fill(BufferedInputStream.java:183)
      at java.io.BufferedInputStream.read(BufferedInputStream.java:201)
      - locked <0x447a2088> (a java.io.BufferedInputStream)
      at java.io.DataInputStream.readByte(DataInputStream.java:331)
      at 
org.activemq.io.impl.AbstractDefaultWireFormat.readPacket(AbstractDefaultWireFormat.java:169) 

      at 
org.activemq.transport.tcp.TcpTransportChannel.run(TcpTransportChannel.java:308) 

      at java.lang.Thread.run(Thread.java:534)

"LinkManager" daemon prio=1 tid=0x0841b770 nid=0x3b13 waiting on 
condition [5d717000..5d717714]
      at java.lang.Thread.sleep(Native Method)
      at com.aspc.remote.util.links.LinkManager.run(LinkManager.java:497)
      at java.lang.Thread.run(Thread.java:534)

"Thread-1" daemon prio=1 tid=0x08422160 nid=0x3b13 waiting on condition 
[5d685000..5d685714]
      at java.lang.Thread.sleep(Native Method)
      at org.apache.log4j.helpers.FileWatchdog.run(FileWatchdog.java:95)

"Thread-0" daemon prio=1 tid=0x081c3818 nid=0x3b13 runnable 
[5bbeb000..5bbeb714]
      at java.io.FileInputStream.readBytes(Native Method)
      at java.io.FileInputStream.read(FileInputStream.java:194)
      at java.io.BufferedInputStream.fill(BufferedInputStream.java:183)
      at java.io.BufferedInputStream.read1(BufferedInputStream.java:222)
      at java.io.BufferedInputStream.read(BufferedInputStream.java:277)
      - locked <0x45e38760> (a java.io.BufferedInputStream)
      at 
org.apache.commons.launcher.ParentListener.run(ParentListener.java:115)
      - locked <0x45e38760> (a java.io.BufferedInputStream)

"DestroyJavaVM" prio=1 tid=0x08053980 nid=0x3b13 waiting on condition 
[0..bfffb504]

*"org.apache.commons.launcher.ChildMain" prio=1 tid=0x081c4320 
nid=0x3b13 in Object.wait() [5bb69000..5bb6a714]
      at java.lang.Object.wait(Native Method)
      - waiting on <0x4477c3f8> (a java.lang.Object)
      at 
org.activemq.message.ReceiptHolder.getReceipt(ReceiptHolder.java:68)
      - locked <0x4477c3f8> (a java.lang.Object)
      at 
org.activemq.transport.TransportChannelSupport.send(TransportChannelSupport.java:146) 

      at 
org.activemq.ActiveMQConnection.syncSendPacket(ActiveMQConnection.java:982)
      at 
org.activemq.ActiveMQConnection.syncSendPacket(ActiveMQConnection.java:967)
      at 
org.activemq.ActiveMQSession.addProducer(ActiveMQSession.java:1272)
      at 
org.activemq.ActiveMQMessageProducer.<init>(ActiveMQMessageProducer.java:94) 

      at 
org.activemq.ActiveMQTopicPublisher.<init>(ActiveMQTopicPublisher.java:95)
      at 
org.activemq.ActiveMQSession.createPublisher(ActiveMQSession.java:1006)
      at 
org.activemq.ActiveMQTopicSession.createPublisher(ActiveMQTopicSession.java:206) 

      *at com.aspc.remote.jms.Client.startJMS(Client.java:471)
      at com.aspc.remote.jms.Client.connect(Client.java:239)
      at com.aspc.DBObj.MasterDB.<init>(MasterDB.java:909)
      at com.aspc.DBObj.MasterDB.currentMasterDB(MasterDB.java:667)
      - locked <0x57626a00> (a java.lang.Class)
      at com.aspc.DBObj.VirtualDB.<init>(VirtualDB.java:3777)
      at com.aspc.DBObj.VirtualDB.findNoCheck(VirtualDB.java:1938)
      - locked <0x45e87638> (a com.aspc.Util.Memory.HashLongMap)
      at com.aspc.DBObj.VirtualDB.find(VirtualDB.java:1914)
      at com.aspc.DBObj.VirtualDB.find(VirtualDB.java:1833)
      at 
com.aspecthuntley.apps.RecordDeliveries.process(RecordDeliveries.java:73)
      at 
com.aspc.remote.application.AppCmdLine.execute(AppCmdLine.java:134)
      at 
com.aspecthuntley.apps.RecordDeliveries.main(RecordDeliveries.java:172)
      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:324)
      at org.apache.commons.launcher.ChildMain.run(ChildMain.java:228)

"Signal Dispatcher" daemon prio=1 tid=0x0809e8d8 nid=0x3b13 waiting on 
condition [0..0]

"Finalizer" daemon prio=1 tid=0x08089d28 nid=0x3b13 in Object.wait() 
[5b5f5000..5b5f5714]
      at java.lang.Object.wait(Native Method)
      - waiting on <0x45e38eb8> (a java.lang.ref.ReferenceQueue$Lock)
      at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:111)
      - locked <0x45e38eb8> (a java.lang.ref.ReferenceQueue$Lock)
      at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:127)
      at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:159)

"Reference Handler" daemon prio=1 tid=0x080890d0 nid=0x3b13 in 
Object.wait() [5b574000..5b574714]
      at java.lang.Object.wait(Native Method)
      - waiting on <0x45e38c38> (a java.lang.ref.Reference$Lock)
      at java.lang.Object.wait(Object.java:429)
      at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:115)
      - locked <0x45e38c38> (a java.lang.ref.Reference$Lock)

"VM Thread" prio=1 tid=0x08087e18 nid=0x3b13 runnable

"VM Periodic Task Thread" prio=1 tid=0x080aa6e0 nid=0x3b13 waiting on 
condition
"Suspend Checker Thread" prio=1 tid=0x0809df80 nid=0x3b13 runnable




--
Nigel Leck
System Architect
ST Software Pty Limited
Level 2, 28 Rodborough Rd
Frenchs Forest NSW 2086
National: 1300 78 73 78
International: +61 2 8977 2077
Fax: +61 2 8977 2080
www.stsoftware.com.au