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https://issues.apache.org/jira/browse/ARTEMIS-4365?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robbie Gemmell resolved ARTEMIS-4365.
-------------------------------------
Fix Version/s: 2.30.0
Resolution: Fixed
> MQTT retain flag not set correctly
> ----------------------------------
>
> Key: ARTEMIS-4365
> URL: https://issues.apache.org/jira/browse/ARTEMIS-4365
> Project: ActiveMQ Artemis
> Issue Type: Bug
> Reporter: Justin Bertram
> Assignee: Justin Bertram
> Priority: Major
> Fix For: 2.30.0
>
> Time Spent: 1h 40m
> Remaining Estimate: 0h
>
> The {{retain}} flag set on MQTT messages dispatched to clients is incorrect
> in certain circumstances. This is demonstrated by using the {{test}} command
> from the [MQTT CLI tool|https://hivemq.github.io/mqtt-cli/docs/test/], e.g.:
> {noformat}
> $ mqtt test --all
> MQTT 3: OK
> - Maximum topic length: 65535 bytes
> - QoS 0: Received 100000/100000 publishes in 4847.01ms
> - QoS 1: Received 100000/100000 publishes in 27413.45ms
> - QoS 2: Received 100000/100000 publishes in 49551.40ms
> - Retain: OK
> - Wildcard subscriptions: OK
> - Shared subscriptions: OK
> - Payload size: >= 100000 bytes
> - Maximum client id length: 65535 bytes
> - Unsupported Ascii Chars: ALL SUPPORTED
> MQTT 5: OK
> - Connect restrictions:
> > Retain: OK
> > Wildcard subscriptions: OK
> > Shared subscriptions: OK
> > Subscription identifiers: OK
> > Maximum QoS: 2
> > Receive maximum: 65535
> > Maximum packet size: 268435455 bytes
> > Topic alias maximum: 65535
> > Session expiry interval: Client-based
> > Server keep alive: Client-based
> - Maximum topic length: 65535 bytes
> - QoS 0: Received 100000/100000 publishes in 706.21ms
> - QoS 1: Received 100000/100000 publishes in 805.38ms
> - QoS 2: Received 100000/100000 publishes in 972.98ms
> - Retain: TIME_OUT
> - Wildcard subscriptions: OK
> - Shared subscriptions: OK
> - Payload size: >= 100000 bytes
> - Maximum client id length: 65535 bytes
> - Unsupported Ascii Chars: ALL SUPPORTED{noformat}
> Notice the result of {{TIME_OUT}} when testing retain functionality for MQTT
> 5.
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