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Posted to issues@activemq.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2025/07/29 20:31:00 UTC
[jira] [Work logged] (ARTEMIS-5598) Mitigate race condition on ServerConsumer callback
[ https://issues.apache.org/jira/browse/ARTEMIS-5598?focusedWorklogId=976848&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-976848 ]
ASF GitHub Bot logged work on ARTEMIS-5598:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 29/Jul/25 20:30
Start Date: 29/Jul/25 20:30
Worklog Time Spent: 10m
Work Description: jbertram opened a new pull request, #5848:
URL: https://github.com/apache/activemq-artemis/pull/5848
No test here as the cause of & solution for the NPE is determined by static analysis.
Issue Time Tracking
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Worklog Id: (was: 976848)
Remaining Estimate: 0h
Time Spent: 10m
> Mitigate race condition on ServerConsumer callback
> --------------------------------------------------
>
> Key: ARTEMIS-5598
> URL: https://issues.apache.org/jira/browse/ARTEMIS-5598
> Project: ActiveMQ Artemis
> Issue Type: Bug
> Reporter: Justin Bertram
> Assignee: Justin Bertram
> Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> There is a race condition in {{ServerConsumerImpl}} involving {{callback}} which can result in a {{NullPointerException}}, e.g.:
> {noformat}
> java.lang.NullPointerException
> at org.apache.activemq.artemis.core.server.impl.ServerConsumerImpl.proceedDeliver(ServerConsumerImpl.java:532)
> at org.apache.activemq.artemis.core.server.impl.ServerConsumerImpl$BrowserDeliverer.run(ServerConsumerImpl.java:1488)
> at org.apache.activemq.artemis.utils.actors.OrderedExecutor.doTask(OrderedExecutor.java:57)
> at org.apache.activemq.artemis.utils.actors.OrderedExecutor.doTask(OrderedExecutor.java:32)
> at org.apache.activemq.artemis.utils.actors.ProcessorBase.executePendingTasks(ProcessorBase.java:68)
> at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
> at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
> at org.apache.activemq.artemis.utils.ActiveMQThreadFactory$1.run(ActiveMQThreadFactory.java:118){noformat}
> The race happens when a message is being delivered at the same time the consumer is closed.
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