Pierre Villard created NIFI-7894:
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             Summary: ConsumeMQTT - allow EL on Client ID property with shared 
subscription
                 Key: NIFI-7894
                 URL: https://issues.apache.org/jira/browse/NIFI-7894
             Project: Apache NiFi
          Issue Type: Improvement
          Components: Extensions
            Reporter: Pierre Villard
            Assignee: Pierre Villard


When subscribing to a shared connection (using the Group ID), then the client 
ID property must be empty and a random UUID will be generated for the client 
ID. Instead it should be possible for a user to use expression language for the 
client ID so that the user can control the name of the client. In case the EL 
expression does not generate different IDs for the clients, then the same 
message would be consumed by all the nodes in a NiFi cluster.



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