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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-14556) S3A to support Delegation Tokens
Date Tue, 05 Sep 2017 08:45:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-14556?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16153277#comment-16153277
] 

Steve Loughran commented on HADOOP-14556:
-----------------------------------------

ooh, nice work Daryn, if you've got code I'd like to see it & will think about how to
test. We already have s3a tests for session credentials, so more tests won't be impossible

I'll take your word for my patch being broken :)

> S3A to support Delegation Tokens
> --------------------------------
>
>                 Key: HADOOP-14556
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14556
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 2.8.1
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>         Attachments: HADOOP-14556-001.patch
>
>
> S3A to support delegation tokens where
> * an authenticated client can request a token via {{FileSystem.getDelegationToken()}}
> * Amazon's token service is used to request short-lived session secret & id; these
will be saved in the token and  marshalled with jobs
> * A new authentication provider will look for a token for the current user and authenticate
the user if found
> This will not support renewals; the lifespan of a token will be limited to the initial
duration. Also, as you can't request an STS token from a temporary session, IAM instances
won't be able to issue tokens.



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