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https://issues.apache.org/jira/browse/HADOOP-14556?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16650850#comment-16650850
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Steve Loughran commented on HADOOP-14556:
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Note that the partially {{ITestDelegatedMRJob}} test does show that S3A tokens
are picked up for MR job submit; tested for full, session and role tokens.
One fun detail: if your fs.s3a.secret.key &c attributes are set in the job conf
you launch with, they end up at the far end, even though you are using DTs.
Why? well, because they are config options, aren't they?
To get the lockdown to work, you need to be serving up the secrets inside a
hadoop credential provider file such as localjceks file. That way, the job
conf will not contain the secrets.
There's no
> 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-14556-008.patch, HADOOP-14556-009.patch,
> HADOOP-14556-010.patch, HADOOP-14556-010.patch, HADOOP-14556-011.patch,
> HADOOP-14556-012.patch, HADOOP-14556-013.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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