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https://issues.apache.org/jira/browse/QPID-7156?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15211780#comment-15211780
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ASF subversion and git services commented on QPID-7156:
-------------------------------------------------------
Commit 1736566 from [~k-wall] in branch 'java/branches/6.0.x'
[ https://svn.apache.org/r1736566 ]
QPID-7156: [Java Broker] Stop new connections from being established while
virtual host is stopping.
Manually backported from trunk:
svn merge -c 1736478 ^/qpid/java/trunk
> Possible Java Broker crash if connection is formed whilst virtualhost is
> stopping
> ---------------------------------------------------------------------------------
>
> Key: QPID-7156
> URL: https://issues.apache.org/jira/browse/QPID-7156
> Project: Qpid
> Issue Type: Bug
> Components: Java Broker
> Affects Versions: qpid-java-6.0, qpid-java-6.0.1
> Reporter: Keith Wall
> Assignee: Lorenz Quack
> Fix For: qpid-java-6.0.2, qpid-java-6.1
>
> Attachments:
> 0001-QPID-7156-Java-Broker-Stop-new-connections-from-bein.patch
>
>
> As reported here:
> http://qpid.2158936.n2.nabble.com/Java-broker-crashes-after-stopping-vhost-td7640284.html
> A race condition leads to the possibility of a NPE if the virtualhost is
> stopped as a new connection is formed. In the unlucky case, the task to
> associate the connection with the virtualhost gets executed after the virtual
> host's network connection scheduler is shutdown. This leads to a NPE. The
> Broker detects the NPE and shuts itself down.
> {noformat}
> 2016-03-18 06:41:06,748 ERROR [IO-/172.24.102.24:51029] (o.a.q.s.Main) -
> Uncaught exception, shutting down.
> java.lang.NullPointerException: null
> at
> org.apache.qpid.server.transport.NetworkConnectionScheduler.processConnection(NetworkConnectionScheduler.java:142)
> ~[qpid-broker-core-6.0.1.jar:6.0.1]
> at
> org.apache.qpid.server.transport.SelectorThread$ConnectionProcessor.processConnection(SelectorThread.java:505)
> ~[qpid-broker-core-6.0.1.jar:6.0.1]
> at
> org.apache.qpid.server.transport.SelectorThread$SelectionTask.performSelect(SelectorThread.java:338)
> ~[qpid-broker-core-6.0.1.jar:6.0.1]
> at
> org.apache.qpid.server.transport.SelectorThread$SelectionTask.run(SelectorThread.java:87)
> ~[qpid-broker-core-6.0.1.jar:6.0.1]
> at
> org.apache.qpid.server.transport.SelectorThread.run(SelectorThread.java:463)
> ~[qpid-broker-core-6.0.1.jar:6.0.1]
> at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown
> Source) ~[na:1.8.0_51]
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown
> Source) ~[na:1.8.0_51]
> at java.lang.Thread.run(Unknown Source) ~[na:1.8.0_51]
> "
> {noformat}
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