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From "Kan Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4056) Always start the NN's SecretManager
Date Wed, 24 Oct 2012 08:28:12 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4056?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13483078#comment-13483078

Kan Zhang commented on HDFS-4056:

bq. Since we aren't to the point of making client-side changes, and they won't impact the
server, is this server-side change acceptable?

-1 (in case you are still wondering about my position after our long discussion between this
JIRA and HADOOP-8779).

To summarize, I don't think NN's SecretManager should always be started. It depends on configuration.
In particular, when SIMPLE + SIMPLE is configured, token related code should be turned off
and no token related overhead incurred.
> 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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