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https://issues.apache.org/jira/browse/HDFS-14322?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16779947#comment-16779947
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Íñigo Goiri commented on HDFS-14322:
------------------------------------

Thanks [~crh] for [^HDFS-14322-HDFS-13532.001.patch].
 A couple comments:
 * Change the order of the equals, as we know for sure that authMethodToInit 
won't be null.
 * Add a space between the if and the parenthesis.
 * For the exception, instead of printing the whole cause, what about: 
{{LOG.error("Could not instantiate {}: {}", clazz.getSimpleName(), 
e.getCause().getMessage());}}. Or something that doesn't have a full stack 
trace. The only issue is that right now we are using a precondition (throwing 
NPE) for the ZK, maybe we want to throw a proper exception for that instead of 
just relying on the precondition error. In any case, {{Zookeeper connection 
string cannot be null}} is ok as a message.

> RBF: Security manager should not load if security is disabled
> -------------------------------------------------------------
>
>                 Key: HDFS-14322
>                 URL: https://issues.apache.org/jira/browse/HDFS-14322
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: CR Hota
>            Assignee: CR Hota
>            Priority: Major
>         Attachments: HDFS-14322-HDFS-13532.001.patch
>
>
> Security manager tries to instantiate secret manager irrespective of whether 
> security is on/off. Simple optimization should be done to avoid loading 
> secret manager if security is turned off.



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