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The command line for stopping Kafka nodes will include a pair of optional and mutually exclusive parameters "[--process-role = value]" OR  OR "[--node-id = value]"  to support identifying a set of processes or a specific process to stop based on the contents of the node's configuration file.

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./bin/kafka-server-stop.sh --process-role= broker

Example 2: the command to kill the process with node ID = 1 will look like:

./bin/kafka-server-stop.sh --node-id= 1

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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