Keith Wall created QPID-7156:
--------------------------------
Summary: 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-6.0.1, qpid-java-6.0
Reporter: Keith Wall
Fix For: qpid-java-6.0.2, qpid-java-6.1
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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