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https://issues.apache.org/jira/browse/NIFI-13190?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kay-Uwe Moosheimer updated NIFI-13190:
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Priority: Major (was: Minor)
> Add suppport for User Properties in MQTT V5
> -------------------------------------------
>
> Key: NIFI-13190
> URL: https://issues.apache.org/jira/browse/NIFI-13190
> Project: Apache NiFi
> Issue Type: Improvement
> Affects Versions: 2.1.0
> Reporter: Kay-Uwe Moosheimer
> Priority: Major
>
> MQTT V5 supports User Properties to transmit user-defined attributes
> independently of the message.
> ConsumeMQTT and PublishMQTT should support these User Properties.
> Among other things, this is interesting to support OpenTelemetry (which
> should be supported by default on both processors) but also to transmit
> additional information, for example on further processing or the status of
> the message (where did the message originally come from, why did the message
> come from, how is the message to be handled, etc.).
> PublishMQTT should include a text field in which you can enter a
> comma-separated values list of the attributes to be written from the FlowFile.
> ConsumeMQTT should read all User Properties and save them in the FlowFile.
> It should be noted that the flow designer should have the option of adopting
> the read User Properties directly (and overwriting any existing attributes)
> or providing them with a prefix (e.g. mqtt.user_property.xyz).
> Info: https://www.hivemq.com/blog/mqtt5-essentials-part6-user-properties/
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