[jira] [Created] (KAFKA-10720) Add note to Transformation docs to avoid mutating records or their members

["Chris Egerton (Jira)" <ji...@apache.org>]

Chris Egerton created KAFKA-10720:
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             Summary: Add note to Transformation docs to avoid mutating records or their members
                 Key: KAFKA-10720
                 URL: https://issues.apache.org/jira/browse/KAFKA-10720
             Project: Kafka
          Issue Type: Improvement
          Components: KafkaConnect
            Reporter: Chris Egerton


The public documentation for the {{Transformation}} interface does not mention whether an SMT should or should not mutate records or their members (such as their values or headers), but there's some logic in the Connect framework that relies on SMTs not doing this, such as the invocation of `SourceTask::commitRecord` with a pre-transformation record in some cases.

We should consider adding a note about not modifying records or their members to the public-facing documentation for the {{Transformation}} interface.



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