[jira] [Commented] (AMQ-5426) ActiveMQMessageConsumer race condition

["Michael Wong (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/AMQ-5426?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14201352#comment-14201352 ] 

Michael Wong commented on AMQ-5426:
-----------------------------------

Do we need to lock deliveredMessages on accessing pendingAck?

> ActiveMQMessageConsumer race condition
> --------------------------------------
>
>                 Key: AMQ-5426
>                 URL: https://issues.apache.org/jira/browse/AMQ-5426
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: JMS client
>    Affects Versions: 5.8.0
>            Reporter: Michael Wong
>            Priority: Minor
>
> ActiveMQMessageConsumer could run into NPE in some occasion.
> Here is the stacktrace:
> java.lang.NullPointerException
> at org.apache.activemq.ActiveMQMessageConsumer.ackLater(ActiveMQMessageConsumer.java:979)
> at org.apache.activemq.ActiveMQMessageConsumer.afterMessageIsConsumed(ActiveMQMessageConsumer.java:929)
> at org.apache.activemq.ActiveMQMessageConsumer.dispatch(ActiveMQMessageConsumer.java:1323)
> at org.apache.activemq.ActiveMQSessionExecutor.dispatch(ActiveMQSessionExecutor.java:131)
> at org.apache.activemq.ActiveMQSessionExecutor.iterate(ActiveMQSessionExecutor.java:202)
> at org.apache.activemq.thread.PooledTaskRunner.runTask(PooledTaskRunner.java:129)
> at org.apache.activemq.thread.PooledTaskRunner$1.run(PooledTaskRunner.java:47)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:745)



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)