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From "Steven Wong (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-12723) S3A: Add ability to plug in any AWSCredentialsProvider
Date Sat, 14 May 2016 04:33:13 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-12723?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15283416#comment-15283416
] 

Steven Wong commented on HADOOP-12723:
--------------------------------------

The new Checkstyle warning "Missing package-info.java file" seems innocuous.

> S3A: Add ability to plug in any AWSCredentialsProvider
> ------------------------------------------------------
>
>                 Key: HADOOP-12723
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12723
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: fs/s3
>    Affects Versions: 2.7.1
>            Reporter: Steven Wong
>            Assignee: Steven Wong
>         Attachments: HADOOP-12723.0.patch, HADOOP-12723.1.patch, HADOOP-12723.2.patch,
HADOOP-12723.3.patch
>
>
> Although S3A currently has built-in support for {{org.apache.hadoop.fs.s3a.BasicAWSCredentialsProvider}},
{{com.amazonaws.auth.InstanceProfileCredentialsProvider}}, and {{org.apache.hadoop.fs.s3a.AnonymousAWSCredentialsProvider}},
it does not support any other credentials provider that implements the {{com.amazonaws.auth.AWSCredentialsProvider}}
interface. Supporting the ability to plug in any {{com.amazonaws.auth.AWSCredentialsProvider}}
instance will expand the options for S3 credentials, such as:
> * temporary credentials from STS, e.g. via {{com.amazonaws.auth.STSSessionCredentialsProvider}}
> * IAM role-based credentials, e.g. via {{com.amazonaws.auth.STSAssumeRoleSessionCredentialsProvider}}
> * a custom credentials provider that satisfies one's own needs, e.g. bucket-specific
credentials, user-specific credentials, etc.
> To support this, we can add a configuration for the fully qualified class name of a credentials
provider, to be loaded by {{S3AFileSystem.initialize(URI, Configuration)}}.
> The configured credentials provider should implement {{com.amazonaws.auth.AWSCredentialsProvider}}
and have a constructor that accepts {{(URI uri, Configuration conf)}}.



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