Github user StephanEwen commented on the issue: https://github.com/apache/flink/pull/3600 I am a bit confused here, this seems to make things more complicated. Before, if you wanted to use ZK and Kerberos, you only added `zookeeper` to `security.kerberos.login.contexts`. Now you need additionally to set `zookeeper.sasl.disable` to `false`? Why don't we keep `zookeeper.sasl.disable` as `false` by default? If I understand it correctly, it is anyways only ever relevant when the ZooKeeper login context has been enabled...
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