David Mao created KAFKA-18167:
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             Summary: Disable JDK session ticket extension by default
                 Key: KAFKA-18167
                 URL: https://issues.apache.org/jira/browse/KAFKA-18167
             Project: Kafka
          Issue Type: Task
            Reporter: David Mao
            Assignee: David Mao


JDK 14 enabled the TLS session ticket extension by default. This can cause 
severe cpu regression with certain JDK distributions, see: 
https://bugs.openjdk.org/browse/JDK-8298381 and adds some non-trivial CPU 
overhead to TLS handshaking in other cases.

Since JDK 17 is now the minimum JDK version for broker deployments, we should 
consider disabling TLS session tickets by default. This minimizes upgrade 
friction for customers who may not be aware of these issues.



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