Repeating NPE on shutdown under Tomcat
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Key: AMQ-2445
URL: https://issues.apache.org/activemq/browse/AMQ-2445
Project: ActiveMQ
Issue Type: Bug
Components: Message Store
Affects Versions: 5.2.0
Reporter: Brian Topping
When AMQ is embedded in Tomcat 6 with the vm: connector, the following
exception is occasionally produced in large quantity:
Exception in thread "Persistence Adaptor Task" java.lang.NullPointerException
at org.apache.log4j.LogManager.getLogger(LogManager.java:188)
at org.apache.log4j.Logger.getLogger(Logger.java:104)
at
org.apache.commons.logging.impl.Log4JLogger.getLogger(Log4JLogger.java:289)
at
org.apache.commons.logging.impl.Log4JLogger.isDebugEnabled(Log4JLogger.java:299)
at
org.apache.activemq.store.amq.AMQPersistenceAdapter.doCheckpoint(AMQPersistenceAdapter.java:380)
at
org.apache.activemq.store.amq.AMQPersistenceAdapter$1.iterate(AMQPersistenceAdapter.java:237)
at
org.apache.activemq.thread.PooledTaskRunner.runTask(PooledTaskRunner.java:122)
at
org.apache.activemq.thread.PooledTaskRunner$1.run(PooledTaskRunner.java:43)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:637)
It seems to happen more reliably when there are messages that have been
transactionally rolled back to the queue over the course of the execution.
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