[jira] [Commented] (ARROW-10675) [C++][Python] Support AWS S3 Web identity credentials

["Antoine Pitrou (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-10675?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17236684#comment-17236684 ] 

Antoine Pitrou commented on ARROW-10675:
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Thank you for the report. Would you like to provide a pull request, at least on the C++ side?

> [C++][Python] Support AWS S3 Web identity credentials
> -----------------------------------------------------
>
>                 Key: ARROW-10675
>                 URL: https://issues.apache.org/jira/browse/ARROW-10675
>             Project: Apache Arrow
>          Issue Type: Improvement
>    Affects Versions: 1.0.1, 2.0.0
>            Reporter: Paul Balanca
>            Priority: Major
>
> It seems to me that Arrow only supports at the moment the "AssumeRole" AWS STS API, but not the other options offered:
>  * [https://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_temp_request.html#stsapi_comparison]
>  * [https://sdk.amazonaws.com/cpp/api/LATEST/class_aws_1_1_auth_1_1_s_t_s_assume_role_web_identity_credentials_provider.html]
> I am clearly no security/infra expert, but it seems that the configuration "AssumeRoleWithWebIdentity" is used commonly in Kubernetes setups, and I believe it would be beneficial for Arrow C++ & Python library to support.
> At the moment, a workaround is to call directly `aws sts` to generate a temporary session, but it is a fairly painful solution as the session expires, all PyArrow objects with an S3 filesystem (datasets, ...) need to be re-built with new credentials. 



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