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https://issues.apache.org/jira/browse/ARTEMIS-4781?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robbie Gemmell resolved ARTEMIS-4781.
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Fix Version/s: 2.38.0
Resolution: Fixed
> Clustering not-large AMQP message can leak Core large message file
> ------------------------------------------------------------------
>
> Key: ARTEMIS-4781
> URL: https://issues.apache.org/jira/browse/ARTEMIS-4781
> Project: ActiveMQ Artemis
> Issue Type: Bug
> Components: Clustering
> Affects Versions: 2.33.0
> Reporter: Erwin Dondorp
> Assignee: Justin Bertram
> Priority: Major
> Fix For: 2.38.0
>
> Attachments: Test4781LargeMsgOnDisk.java, reproducer-output.txt
>
> Time Spent: 2h 20m
> Remaining Estimate: 0h
>
> SETUP:
> Using a broker-cluster.
> We are producing big AMQP messages on the first node and consume them from
> the second node.
> The size of the messages is chosen so that these are around the
> min-large-message-size.
> OBSERVATION:
> For specific message sizes, the TMP files on the second node are not removed
> even when the message is consumed.
> My assumption is that this occurs for those messages that are not initially
> LARGE messsages, but which become LARGE messages due to the movement of the
> messages between the cluster nodes. During this process a few administrative
> (or informative?) message headers are added by the broker causing the message
> size to be increased so that it is now a large message.
> REPRODUCER
> The reproducer sets-up a cluster of 2 nodes and leaves the
> min-large-message-size at the default 102400 bytes.
> The reproducer sends text-messages with a text-payload between 90KiB and
> 110KiB, increasing each time with 50 bytes. this results in a range of just
> over 400 messages.
> In this scenario, 7 files are left in the large-msgs directory after test is
> completed and all software is ended. The files have file-sizes 102433 through
> 102733 bytes.
> There were no functional problems, all messages were properly produced and
> consumed.
> REPRODUCER INSTRUCTIONS
> place attached file in directory
> {{[activemq-artemis]/tests/integration-tests/src/test/java/org/apache/activemq/artemis/tests/integration/amqp}}
> run with: {{cd tests/integration-tests && mvn
> -Dmaven.test.redirectTestOutputToFile=false -DskipIntegrationTests=false
> -Dtest="Test4781LargeMsgOnDisk" clean test}}
> the output of the reproducer is also attached.
> NOTE:
> the title+description of this issue has been updated significantly as
> initially a much more complicated scenario was described. further
> investigation has shown that it was actually a simpler scenario.
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