[jira] [Resolved] (ARTEMIS-4233) QueueImpl::NPE on holder.iter == null

["Robbie Gemmell (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARTEMIS-4233?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Robbie Gemmell resolved ARTEMIS-4233.
-------------------------------------
      Assignee: Clebert Suconic
    Resolution: Fixed

> QueueImpl::NPE on holder.iter == null
> -------------------------------------
>
>                 Key: ARTEMIS-4233
>                 URL: https://issues.apache.org/jira/browse/ARTEMIS-4233
>             Project: ActiveMQ Artemis
>          Issue Type: Bug
>            Reporter: Clebert Suconic
>            Assignee: Clebert Suconic
>            Priority: Major
>             Fix For: 2.29.0
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> I had an user reporting the following NPE on a test:
> java.lang.NullPointerException: Cannot invoke “org.apache.activemq.artemis.utils.collections.LinkedListIterator.repeat()” because “holder.iter” is null
>         at org.apache.activemq.artemis.core.server.impl.QueueImpl.deliver(QueueImpl.java:3176) ~[artemis-server-2.29.0-SNAPSHOT.jar:2.29.0-SNAPSHOT]
>         at org.apache.activemq.artemis.core.server.impl.QueueImpl$DeliverRunner.run(QueueImpl.java:4331) ~[artemis-server-2.29.0-SNAPSHOT.jar:2.29.0-SNAPSHOT]
>         at org.apache.activemq.artemis.utils.actors.OrderedExecutor.doTask(OrderedExecutor.java:57) ~[artemis-commons-2.29.0-SNAPSHOT.jar:?]
>         at org.apache.activemq.artemis.utils.actors.OrderedExecutor.doTask(OrderedExecutor.java:32) ~[artemis-commons-2.29.0-SNAPSHOT.jar:?]
>         at org.apache.activemq.artemis.utils.actors.ProcessorBase.executePendingTasks(ProcessorBase.java:68) ~[artemis-commons-2.29.0-SNAPSHOT.jar:?]
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) ~[?:?]
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[?:?]
> I am adding final variables so it's validated in compile time instead to avoid this particular issue.



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