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https://issues.apache.org/jira/browse/ARTEMIS-4233?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17709415#comment-17709415
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ASF subversion and git services commented on ARTEMIS-4233:
----------------------------------------------------------
Commit 23bbf76bdfdf56b3088b5149c152d05c86709717 in activemq-artemis's branch
refs/heads/main from Clebert Suconic
[ https://gitbox.apache.org/repos/asf?p=activemq-artemis.git;h=23bbf76bdf ]
ARTEMIS-4233 Avoiding holder.iter=null with a compile time validation
> 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
> Priority: Major
>
> 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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