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From "Timothy Bish (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMQ-3782) FailoverTransport throws NPE
Date Wed, 21 Mar 2012 18:21:40 GMT

    [ https://issues.apache.org/jira/browse/AMQ-3782?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13234798#comment-13234798
] 

Timothy Bish commented on AMQ-3782:
-----------------------------------

Do you have a test case that can reproduce this.  I don't really see a way in the current
code that this could happen.
                
> FailoverTransport throws NPE
> ----------------------------
>
>                 Key: AMQ-3782
>                 URL: https://issues.apache.org/jira/browse/AMQ-3782
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Transport
>    Affects Versions: 5.2.0
>         Environment: debian java-6-sun activemq 5.2
>            Reporter: Wojciech Oczkowski
>
> Failover transport occasionally throws NullPointerException
> INFO   | jvm 1    | 2012/03/19 09:25:05 | Exception in thread "ActiveMQ Failover Worker:
2009192672" java.lang.NullPointerException
> INFO   | jvm 1    | 2012/03/19 09:25:05 |       at org.apache.activemq.transport.failover.FailoverTransport$2.iterate(FailoverTransport.java:125)
> INFO   | jvm 1    | 2012/03/19 09:25:05 |       at org.apache.activemq.thread.DedicatedTaskRunner.runTask(DedicatedTaskRunner.java:98)
> INFO   | jvm 1    | 2012/03/19 09:25:05 |       at org.apache.activemq.thread.DedicatedTaskRunner$1.run(DedicatedTaskRunner.java:36)
> It seems like DedicatedTaskRunner starts Thread before FailoverTransport finish initializing
  reconnectTask field. 
> Same code is present in 5.5.1 so it's possible that same bug is out there

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