[jira] [Commented] (ARTEMIS-2200) NPE while dropping/failing large messages on paging

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARTEMIS-2200?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16721779#comment-16721779 ] 

ASF GitHub Bot commented on ARTEMIS-2200:
-----------------------------------------

Github user jbertram commented on the issue:

    https://github.com/apache/activemq-artemis/pull/2459
  
    Do you want to implement a better test before this is merged? The test looks fine to me. :+1: 


> NPE while dropping/failing large messages on paging
> ---------------------------------------------------
>
>                 Key: ARTEMIS-2200
>                 URL: https://issues.apache.org/jira/browse/ARTEMIS-2200
>             Project: ActiveMQ Artemis
>          Issue Type: Bug
>    Affects Versions: 2.7.0, 2.6.3
>            Reporter: Francesco Nigro
>            Assignee: Francesco Nigro
>            Priority: Minor
>             Fix For: 2.7.0
>
>
> Due to a race condition while handling deletion (ie confirmation) of large messages dropped/failed due to paging, the Artemis journal try to delete the same records twice, throwing NPE while doing it.
> In addition, given that the NPE is unexpected, the broker is not cleaning up the pending stores on the OperationContext, leading to some leaking OperationContextImpl.TaskHolder instances.
> It is happening with any protocols ie Core, OpenWire, AMQP.
> Are not known yet other bad effects beyond the NPE and the leak.



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