NPE in MessageReference.java when restarting with queued messages
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Key: JBAS-1603
URL: http://jira.jboss.com/jira/browse/JBAS-1603
Project: JBoss Application Server
Type: Bug
Components: JMS service
Versions: JBossAS-4.0.1 Final, JBossAS-3.2.7 Final, JBossAS-4.0.0 Final,
JBossAS-3.2.6 Final, JBossAS-3.2.5 Final, JBossAS-4.0.2RC1, JBossAS-4.0.1RC1,
JBossAS-4.0.1 SP1
Reporter: Peter Stout
Priority: Critical
Using JBoss 3.2.5 with the file-based persistance manager, a JBoss instance
cannot be restarted if there are any queued messages. The following is the
relevant part of an example stacktrace generated when attempting to restart
with queued messages:
2005-02-10 10:54:00,584 ERROR [PersistenceManager]
jboss.mq:service=PersistenceManager PersistenceManager - Starting failed
jboss.mq:service=PersistenceManager
org.jboss.mq.SpyJMSException: Could not rebuild the queue from the queue's
tranaction log.; - nested throwable: (java.lang.NullPointerException)
at org.jboss.mq.pm.file.MessageLog.throwJMSException(MessageLog.java:275)
at org.jboss.mq.pm.file.MessageLog.restore(MessageLog.java:112)
at
org.jboss.mq.pm.file.PersistenceManager.restoreTransactions(PersistenceManager.java:260)
at
org.jboss.mq.pm.file.PersistenceManager.startService(PersistenceManager.java:183)
at
org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:271)
at
org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:221)
... (Many frames deleted)
Caused by: java.lang.NullPointerException
at org.jboss.mq.server.MessageReference.init(MessageReference.java:100)
at org.jboss.mq.server.MessageCache.addInternal(MessageCache.java:130)
at org.jboss.mq.server.MessageCache.add(MessageCache.java:103)
at
org.jboss.mq.pm.file.MessageLog.restoreMessageFromFile(MessageLog.java:267)
at org.jboss.mq.pm.file.MessageLog.restore(MessageLog.java:96)
... 95 more
The immediate cause of the problem is that the MessageReference.init method
assumes that the queue parameter is always non-null, and the rest of the
class assumes that the queue field is always non-null. The MessageCache
class, however, sometimes passes in a null value (MessageCache.java, line
103) for the queue parameter. The same code exists in all 3.2.5+ and 4.0.x
releases. This code did not exist in 3.2.3.
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