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Posted to dev@activemq.apache.org by "Gary Tully (JIRA)" <ji...@apache.org> on 2009/07/08 15:40:08 UTC
[jira] Commented: (AMQ-1447) Broker cannot shutdown cleanly due to
hanging non-daemon threads.
[ https://issues.apache.org/activemq/browse/AMQ-1447?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=52736#action_52736 ]
Gary Tully commented on AMQ-1447:
---------------------------------
on trunk at least, adding a query parameter of daemon=true to the networkConnector urls should eliminate this if it is still a daemon thread.
> Broker cannot shutdown cleanly due to hanging non-daemon threads.
> -----------------------------------------------------------------
>
> Key: AMQ-1447
> URL: https://issues.apache.org/activemq/browse/AMQ-1447
> Project: ActiveMQ
> Issue Type: Bug
> Components: Broker
> Affects Versions: 4.1.1
> Environment: Windows XP, JDK 1.4.2
> Reporter: William Lam
> Fix For: 5.4.0
>
>
> Running with an embedded broker inside an application, the application failed to shutdown cleanly due to some hanging ActiveMQ non-daemon threads, sample stacktace as below.
> "ActiveMQ Transport: tcp://oat-dualcore113/172.17.0.113:61616" prio=5 tid=0x041b8658 nid=0x12f4 in Object.wait() [6c7f000..6c7fdc0]
> at java.lang.Object.wait(Native Method)
> - waiting on <0x168c0490> (a edu.emory.mathcs.backport.java.util.concurrent.CountDownLatch)
> at java.lang.Object.wait(Object.java:429)
> at edu.emory.mathcs.backport.java.util.concurrent.CountDownLatch.await(CountDownLatch.java:178)
> - locked <0x168c0490> (a edu.emory.mathcs.backport.java.util.concurrent.CountDownLatch)
> at org.apache.activemq.network.DemandForwardingBridgeSupport.waitStarted(DemandForwardingBridgeSupport.java:842)
> at org.apache.activemq.network.DemandForwardingBridgeSupport.serviceRemoteCommand(DemandForwardingBridgeSupport.java:332)
> at org.apache.activemq.network.DemandForwardingBridgeSupport$2.onCommand(DemandForwardingBridgeSupport.java:131)
> at org.apache.activemq.transport.ResponseCorrelator.onCommand(ResponseCorrelator.java:95)
> at org.apache.activemq.transport.TransportFilter.onCommand(TransportFilter.java:65)
> at org.apache.activemq.transport.WireFormatNegotiator.onCommand(WireFormatNegotiator.java:133)
> at org.apache.activemq.transport.InactivityMonitor.onCommand(InactivityMonitor.java:122)
> at org.apache.activemq.transport.TransportSupport.doConsume(TransportSupport.java:84)
> at org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:137)
> at java.lang.Thread.run(Thread.java:534)
> It may be caused by other invalid broker connection attempts (not sure how) and TcpTransport is waiting for a successful connection to the remote broker.
> Various ways to workaround that failed,
> - TcpTransport is not being exposed to the application by any means (unlike ActiveMQConnection - even though it is package not public)
> - no means to set the TcpTransport as daemon since it is set on the constructor
> Have to put in some 'custom' code in the application to find all 'ActiveMQ' non-daemon threads and stop() them. Note interrupt() won't work since InterruptedException was ignored.
> I am using the default multicast for broker discovery (tried that with other multicast address, same problem)
> <networkConnectors>
> <networkConnector name="default" uri="multicast://default" failover="false"/>
> </networkConnectors>
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