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

["Clebert Suconic (Jira)" <ji...@apache.org>]

Clebert Suconic created ARTEMIS-4233:
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             Summary: 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


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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