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https://issues.apache.org/jira/browse/NIFI-10894?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pierre Villard resolved NIFI-10894.
-----------------------------------
Resolution: Feedback Received
Apache NiFi 1.x is no longer maintained and no new release is planned on the
1.x release line. Marking as resolved as part of a cleanup operation. Please
open a new one with an updated description if this is still relevant for NiFi
2.x.
> Resume Session in ConsumeMQTT does not work after NiFi restart
> --------------------------------------------------------------
>
> Key: NIFI-10894
> URL: https://issues.apache.org/jira/browse/NIFI-10894
> Project: Apache NiFi
> Issue Type: Bug
> Components: Extensions
> Affects Versions: 1.18.0, 1.19.0
> Reporter: Peter Turcsanyi
> Priority: Major
>
> ConsumeMQTT in Resume Session mode should process the messages sent to broker
> while the processor was offline after starting the processor again.
> Using v5.0 specification version, it works if the processor is stopped and
> then started but the "offline" messages get lost if the NiFi instance is
> restarted.
> It seems the issue is that the async client needs to be used for connecting
> the consumer (not only for the subscribe() call).
> [https://github.com/apache/nifi/blob/830a64b8e95c1ff2baaa3b47234a5ba6c9a5d0de/nifi-nar-bundles/nifi-mqtt-bundle/nifi-mqtt-processors/src/main/java/org/apache/nifi/processors/mqtt/adapters/HiveMqV5ClientAdapter.java#L99]
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