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From "Kan Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4056) Always start the NN's SecretManager
Date Wed, 17 Oct 2012 00:20:03 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4056?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13477485#comment-13477485
] 

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

bq. After this change SIMPLE + SIMPLE will work just as it always has. 

How? If I'm not mistaken, this JIRA tries to make the internal auth always use DIGEST-MD5
(i.e, tokens). SIMPLE auth (i.e., no security) will not be supported for internal auth (e.g.,
when user jobs authenticate to NN).

bq. Based on discussions in HADOOP-8758 and HADOOP-8779, the agreement was to always enable
tokens.

I'm sorry if I left you with that impression and I realized I didn't make my opinion on whether
tokens should "always" be used clear. I'll add a comment to HADOOP-8779. As I explained above,
I think there is value in keeping the use of tokens optional.
                
> 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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