Steve Loughran updated HADOOP-12774:
    Target Version/s: 2.8.0
              Status: Patch Available  (was: Open)

> s3a should use UGI.getCurrentUser.getShortname() for username
> -------------------------------------------------------------
>                 Key: HADOOP-12774
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12774
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 2.7.2
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
> S3a users {{System.getProperty("user.name")}} to get the username for the 
> homedir. This is wrong, as it doesn't work on a YARN app where the identity 
> is set by HADOOP_USER_NAME, or in a doAs clause.
> Obviously, {{UGI.getCurrentUser.getShortname()}} provides that name, 
> everywhere. 
> This is a simple change in the source, though testing is harder ... probably 
> best to try in a doAs

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