Hudson commented on HADOOP-16930:

SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #18084 (See 
HADOOP-16930. Add hadoop-aws documentation for (github: rev 
* (edit) hadoop-tools/hadoop-aws/src/site/markdown/tools/hadoop-aws/index.md

> Add com.amazonaws.auth.profile.ProfileCredentialsProvider to hadoop-aws docs
> ----------------------------------------------------------------------------
>                 Key: HADOOP-16930
>                 URL: https://issues.apache.org/jira/browse/HADOOP-16930
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: documentation, fs/s3
>    Affects Versions: 3.2.1
>            Reporter: Nicholas Chammas
>            Priority: Minor
> There is a very, very useful S3A authentication method that is not currently 
> documented: {{com.amazonaws.auth.profile.ProfileCredentialsProvider}}
> This provider lets you source your AWS credentials from a shared credentials 
> file, typically stored under {{~/.aws/credentials}}, using a [named 
> profile|https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-profiles.html].
>  All you need is to set the {{AWS_PROFILE}} environment variable, and the 
> provider will get the appropriate credentials for you.
> I discovered this from my coworkers, but cannot find it in the docs for 
> hadoop-aws. I'd expect to see it at least mentioned in [this 
> section|https://hadoop.apache.org/docs/r2.9.2/hadoop-aws/tools/hadoop-aws/index.html#S3A_Authentication_methods].
>  It should probably be added to the docs for every minor release that 
> supports it, which I'd guess includes 2.8 on up.
> (This provider should probably also be added to the default list of 
> credential provider classes, but we can address that in another ticket. I can 
> say that at least in 2.9.2, it's not in the default list.)
> (This is not to be confused with 
> {{com.amazonaws.auth.InstanceProfileCredentialsProvider}}, which serves a 
> completely different purpose.)

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