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https://issues.apache.org/jira/browse/HADOOP-10791?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14077904#comment-14077904
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Owen O'Malley commented on HADOOP-10791:
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Alejandro,
It looks like it would make sense to use the KeyProvider for this. Having a
KeyProvider implementation that reads from Zookeeper would be pretty easy.
> AuthenticationFilter should support externalizing the secret for signing and
> provide rotation support
> -----------------------------------------------------------------------------------------------------
>
> Key: HADOOP-10791
> URL: https://issues.apache.org/jira/browse/HADOOP-10791
> Project: Hadoop Common
> Issue Type: Improvement
> Components: security
> Affects Versions: 2.4.1
> Reporter: Alejandro Abdelnur
> Assignee: Robert Kanter
> Attachments: HADOOP-10791.patch, HADOOP-10791.patch
>
>
> It should be possible to externalize the secret used to sign the hadoop-auth
> cookies.
> In the case of WebHDFS the shared secret used by NN and DNs could be used. In
> the case of Oozie HA, the secret could be stored in Oozie HA control data in
> ZooKeeper.
> In addition, it is desirable for the secret to change periodically, this
> means that the AuthenticationService should remember a previous secret for
> the max duration of hadoop-auth cookie.
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