[jira] [Resolved] (ARTEMIS-4781) Clustering not-large AMQP message can leak Core large message file

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

     [ https://issues.apache.org/jira/browse/ARTEMIS-4781?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Robbie Gemmell resolved ARTEMIS-4781.
-------------------------------------
    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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