tustvold opened a new pull request, #2891:
URL: https://github.com/apache/arrow-rs/pull/2891

   _Draft as not properly tested_
   
   # Which issue does this PR close?
   
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   Closes #2178
   
   # Rationale for this change
    
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   Support for the more esoteric AWS auth options has been requested in various 
places, rather than forcing downstreams to workaround this by using an SDK such 
as aws-sdk-rust, lets just provide an option to use aws-sdk-rust to get 
credentials from a profile. This lets people explicitly opt-in to the full 
suite of credential providers, with the accompanying dependency explosion, 
whilst still using the same code for actual communication with object storage. 
I still would argue aws-vault is a superior solution for credential management 
than using AWS named profiles, but we should meet users where they currently 
are.
   
   # What changes are included in this PR?
   
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   There is no need to duplicate the description in the issue here but it is 
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   Adds an optional aws_profile feature which uses aws-config to provide the 
full suite of AWS credential functionality, including SSO, external credential 
providers, role chaining, etc...
   
   # Are there any user-facing changes?
   
   No
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   If there are any breaking changes to public APIs, please add the `breaking 
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