Boyang Chen created KAFKA-8287:
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             Summary: JVM global map to fence duplicate client id
                 Key: KAFKA-8287
                 URL: https://issues.apache.org/jira/browse/KAFKA-8287
             Project: Kafka
          Issue Type: Sub-task
            Reporter: Boyang Chen
            Assignee: Boyang Chen


After change inĀ https://issues.apache.org/jira/browse/KAFKA-8285, the two 
stream instances scheduled on same JVM will be mutually affected if they 
accidentally assign same client.id, since the thread-id becomes local now. The 
solution is to build a global concurrent map for solving conflict if two 
threads happen to be having the same client.id.



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