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https://issues.apache.org/jira/browse/HADOOP-14556?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16628733#comment-16628733
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Steve Loughran commented on HADOOP-14556:
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+also: because s3guard stores the URI including port, explicitly including 443
as the default port causes chaos and confusion.
the default port of the FS must be "0" so it doesn't get inserted or compared
> 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: 3.2.0
> Reporter: Steve Loughran
> Assignee: Steve Loughran
> Priority: Major
> Attachments: HADOOP-14556-001.patch, HADOOP-14556-002.patch,
> HADOOP-14556-003.patch, HADOOP-14556-004.patch, HADOOP-14556-005.patch,
> HADOOP-14556-007.patch, HADOOP-14556.oath-002.patch, HADOOP-14556.oath.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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