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https://issues.apache.org/jira/browse/HADOOP-12774?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15573070#comment-15573070
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Steve Loughran commented on HADOOP-12774:
-----------------------------------------

last patch in PR addresses the issues; Yetus somehow missed it.

I'd like to hold off for HADOOP1-13560; IMO that one is ready for commit, and 
we'll have to see what problems arise downstream. FWIW I have been testing 
spark with it, not seen problems

> 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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