THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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If both parameters are provided, the value for node-id parameter will take precedence, i.e, the process with node id specified will be killed, no matter what's the process role provided. Also, a log message will be shown to indicate that precedence.
When neither a "process-role" nor a "node-id" field is provided, the behavior remains unchanged -- all Kafka processes are stopped.
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