OpenJMS deadlock

NBW <[email protected]> Fri, 2 May 2008 10:02:24 -0400
Newsgroups gmane.comp.java.openjms.user
Message-ID <[email protected]>
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I am seeing the following deadlock occur infrequently in OpenJMS. This is
v0.7.7b1 running under Java 1.6.0_04 server VM on a Windows Server 2003
box.  Here's the thread dump:

[2008-04-30 16:57:43] [info] prio=6 tid=0x58c03400
[2008-04-30 16:57:43] [info] nid=0x9b0
[2008-04-30 16:57:43] [info] in Object.wait()
[2008-04-30 16:57:43] [info] [0x5a4df000..0x5a4dfa98]
[2008-04-30 16:57:43] [info]    java.lang.Thread.State: WAITING (on object
monitor)
[2008-04-30 16:57:43] [info]     at java.lang.Object.wait(Native Method)
[2008-04-30 16:57:43] [info]     - waiting on <0x07f0b2c8>
[2008-04-30 16:57:43] [info] (a java.lang.Object)
[2008-04-30 16:57:43] [info]     at java.lang.Object.wait(Object.java:485)
[2008-04-30 16:57:43] [info]     at
org.exolab.jms.net.multiplexer.MultiplexOutputStream.waitForSpace(MultiplexOutputStream.java:326)
[2008-04-30 16:57:43] [info]     - locked <0x07f0b2c8>
[2008-04-30 16:57:43] [info] (a java.lang.Object)
[2008-04-30 16:57:43] [info]     at
org.exolab.jms.net.multiplexer.MultiplexOutputStream.flush(MultiplexOutputStream.java:165)
[2008-04-30 16:57:43] [info]     at
java.io.ObjectOutputStream$BlockDataOutputStream.flush(ObjectOutputStream.java:1784)
[2008-04-30 16:57:43] [info]     at
java.io.ObjectOutputStream.flush(ObjectOutputStream.java:691)
[2008-04-30 16:57:43] [info]     at
java.io.ObjectOutputStream.close(ObjectOutputStream.java:712)
[2008-04-30 16:57:43] [info]     at
org.exolab.jms.net.multiplexer.Channel.invoke(Channel.java:147)
[2008-04-30 16:57:43] [info]     at
org.exolab.jms.net.multiplexer.MultiplexedManagedConnection.invoke(MultiplexedManagedConnection.java:352)
[2008-04-30 16:57:43] [info]     at
org.exolab.jms.net.multiplexer.MultiplexedConnection.invoke(MultiplexedConnection.java:86)
[2008-04-30 16:57:43] [info]     at
org.exolab.jms.net.connector.ManagedConnectionHandle$ConnectionHandle.invoke(ManagedConnectionHandle.java:322)
[2008-04-30 16:57:44] [info]     at
org.exolab.jms.net.orb.UnicastDelegate.invoke(UnicastDelegate.java:153)
[2008-04-30 16:57:44] [info]     at
org.exolab.jms.net.proxy.Proxy.invoke(Proxy.java:102)
[2008-04-30 16:57:44] [info]     at
org.exolab.jms.server.net.RemoteServerSession__Proxy.start(RemoteServerSession__Proxy.java:463)
[2008-04-30 16:57:44] [info]     at
org.exolab.jms.client.net.JmsSessionStubImpl.start(JmsSessionStubImpl.java:289)
[2008-04-30 16:57:44] [info]     at
org.exolab.jms.client.JmsSession.start(JmsSession.java:924)
[2008-04-30 16:57:44] [info]     - locked <0x08e88890>
[2008-04-30 16:57:44] [info] (a java.lang.Object)
[2008-04-30 16:57:44] [info]     at
org.exolab.jms.client.JmsSession.<init>(JmsSession.java:217)
[2008-04-30 16:57:44] [info]     at
org.exolab.jms.client.JmsQueueSession.<init>(JmsQueueSession.java:80)
[2008-04-30 16:57:44] [info]     at
org.exolab.jms.client.JmsQueueConnection.createQueueSession(JmsQueueConnection.java:106)

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I am seeing the following deadlock occur infrequently in OpenJMS. This is v0.7.7b1 running under Java 1.6.0_04 server VM on a Windows Server 2003 box.&nbsp; Here&#39;s the thread dump:<br><br><font style="font-family: arial,sans-serif;" size="1">[2008-04-30 16:57:43] [info] prio=6 tid=0x58c03400 <br>

[2008-04-30 16:57:43] [info] nid=0x9b0 <br>[2008-04-30 16:57:43] [info] in Object.wait() <br>[2008-04-30 16:57:43] [info] [0x5a4df000..0x5a4dfa98]<br>[2008-04-30 16:57:43] [info]&nbsp;&nbsp;&nbsp; java.lang.Thread.State: WAITING (on object monitor)<br>

[2008-04-30 16:57:43] [info] &nbsp;&nbsp;&nbsp; at java.lang.Object.wait(Native Method)<br>[2008-04-30 16:57:43] [info] &nbsp;&nbsp;&nbsp; - waiting on &lt;0x07f0b2c8&gt; <br>[2008-04-30 16:57:43] [info] (a java.lang.Object)<br>[2008-04-30 16:57:43] [info] &nbsp;&nbsp;&nbsp; at java.lang.Object.wait(Object.java:485)<br>

[2008-04-30 16:57:43] [info] &nbsp;&nbsp;&nbsp; at org.exolab.jms.net.multiplexer.MultiplexOutputStream.waitForSpace(MultiplexOutputStream.java:326)<br>[2008-04-30 16:57:43] [info] &nbsp;&nbsp;&nbsp; - locked &lt;0x07f0b2c8&gt; <br>[2008-04-30 16:57:43] [info] (a java.lang.Object)<br>

[2008-04-30 16:57:43] [info] &nbsp;&nbsp;&nbsp; at org.exolab.jms.net.multiplexer.MultiplexOutputStream.flush(MultiplexOutputStream.java:165)<br>[2008-04-30 16:57:43] [info] &nbsp;&nbsp;&nbsp; at java.io.ObjectOutputStream$BlockDataOutputStream.flush(ObjectOutputStream.java:1784)<br>

[2008-04-30 16:57:43] [info] &nbsp;&nbsp;&nbsp; at java.io.ObjectOutputStream.flush(ObjectOutputStream.java:691)<br>[2008-04-30 16:57:43] [info] &nbsp;&nbsp;&nbsp; at java.io.ObjectOutputStream.close(ObjectOutputStream.java:712)<br>[2008-04-30 16:57:43] [info] &nbsp;&nbsp;&nbsp; at org.exolab.jms.net.multiplexer.Channel.invoke(Channel.java:147)<br>

[2008-04-30 16:57:43] [info] &nbsp;&nbsp;&nbsp; at org.exolab.jms.net.multiplexer.MultiplexedManagedConnection.invoke(MultiplexedManagedConnection.java:352)<br>[2008-04-30 16:57:43] [info] &nbsp;&nbsp;&nbsp; at org.exolab.jms.net.multiplexer.MultiplexedConnection.invoke(MultiplexedConnection.java:86)<br>

[2008-04-30 16:57:43] [info] &nbsp;&nbsp;&nbsp; at org.exolab.jms.net.connector.ManagedConnectionHandle$ConnectionHandle.invoke(ManagedConnectionHandle.java:322)<br>[2008-04-30 16:57:44] [info] &nbsp;&nbsp;&nbsp; at org.exolab.jms.net.orb.UnicastDelegate.invoke(UnicastDelegate.java:153)<br>

[2008-04-30 16:57:44] [info] &nbsp;&nbsp;&nbsp; at org.exolab.jms.net.proxy.Proxy.invoke(Proxy.java:102)<br>[2008-04-30 16:57:44] [info] &nbsp;&nbsp;&nbsp; at org.exolab.jms.server.net.RemoteServerSession__Proxy.start(RemoteServerSession__Proxy.java:463)<br>

[2008-04-30 16:57:44] [info] &nbsp;&nbsp;&nbsp; at org.exolab.jms.client.net.JmsSessionStubImpl.start(JmsSessionStubImpl.java:289)<br>[2008-04-30 16:57:44] [info] &nbsp;&nbsp;&nbsp; at org.exolab.jms.client.JmsSession.start(JmsSession.java:924)<br>[2008-04-30 16:57:44] [info] &nbsp;&nbsp;&nbsp; - locked &lt;0x08e88890&gt; <br>

[2008-04-30 16:57:44] [info] (a java.lang.Object)<br>[2008-04-30 16:57:44] [info] &nbsp;&nbsp;&nbsp; at org.exolab.jms.client.JmsSession.&lt;init&gt;(JmsSession.java:217)<br>[2008-04-30 16:57:44] [info] &nbsp;&nbsp;&nbsp; at org.exolab.jms.client.JmsQueueSession.&lt;init&gt;(JmsQueueSession.java:80)<br>

[2008-04-30 16:57:44] [info] &nbsp;&nbsp;&nbsp; at org.exolab.jms.client.JmsQueueConnection.createQueueSession(JmsQueueConnection.java:106)</font><br><br><br>

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