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  1. delegation.token.max.lifetime.ms : The token has a maximum lifetime beyond which it cannot be renewed anymore. Default value 7 days.

  2. delegation.token.expiry.time.ms : The token validity time in seconds before the token needs to be renewed. Default value 1 day.

  3. delegation.token.master.key : masterKey/secret to generate and verify delegation tokens. This masterKey/secret needs to be configured with all the brokers. If  Same secret key must be configured across all the brokers.  If the masterKey/secret is not set or set to empty string, brokers will disable the delegation token support.

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The MasterKey/secret is used to generate and verify delegation tokens. This is supplied using config option. This Same secret needs to key must be configured with across all the brokers. The current proposal does not support rotation of secret. If the secret is not set or set to empty string, brokers will disable the delegation token support. We require a re-deployment when the secret needs to be rotated.

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