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From "Vadim Pesochinskiy (JIRA)" <>
Subject [jira] [Created] (AMQ-4207) NullPointerException in ActiveMQSession.rollback()
Date Wed, 05 Dec 2012 21:29:57 GMT
Vadim Pesochinskiy created AMQ-4207:

             Summary: NullPointerException in ActiveMQSession.rollback()
                 Key: AMQ-4207
             Project: ActiveMQ
          Issue Type: Bug
          Components: JMS client
    Affects Versions: 5.7.0, 5.6.0, 5.5.1
            Reporter: Vadim Pesochinskiy
            Priority: Minor
             Fix For: 5.8.0

Sometimes we get this exception:

at org.apache.activemq.ActiveMQSession.rollback(
at com.barra.cp.common.activemq.MultiQueueReceiver.rollback(
at com.barra.cp.common.activemq.MultiQueueReceiver.onMessage(

The synchronized dispose() method nulls the transactionContext and sets closed to true. In
many places in the code, not synchronized code checks closed member variable and later references
transactionContext, which can become null by that time.

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