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From "Kan Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4056) Always start the NN's SecretManager
Date Mon, 22 Oct 2012 23:50:12 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4056?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13481942#comment-13481942
] 

Kan Zhang commented on HDFS-4056:
---------------------------------

{quote}
bq. I don't see a use case where SIMPLE + SIMPLE and SIMPLE + TOKEN need to be enabled simultaneously
{quote}

My above comment should read "I don't see a use case where SIMPLE + SIMPLE and SIMPLE + TOKEN
need to be CONFIGURED simultaneously."

bq. In the absence of a new config key, the ambiguity introduced by SIMPLE effectively allows
token-free operation.

That's why I suggest earlier there should be 2 config keys, one for initial auth method and
one for subsequent one. And if we have those configs, we can avoid the unnecessary issuing
of NN tokens when SIMPLE + SIMPLE is configured.
                
> Always start the NN's SecretManager
> -----------------------------------
>
>                 Key: HDFS-4056
>                 URL: https://issues.apache.org/jira/browse/HDFS-4056
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: name-node
>    Affects Versions: 0.23.0, 2.0.0-alpha, 3.0.0
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>         Attachments: HDFS-4056.patch
>
>
> To support the ability to use tokens regardless of whether kerberos is enabled, the NN's
secret manager should always be started.

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