THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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SCRAM messages have an optional extensions field which is a comma-separated list of key=value
pairs. An When KIP-48 is implemented, an extension will be added to the first client SCRAM message to indicate that authentication is being requested for a delegation token. This will enable Kafka broker to obtain credentials and principal using a different code path for delegation tokens.
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