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Date: Fri, 7 Oct 2016 16:35:20 +0000 (UTC)
From: "Steve Loughran (JIRA)" <jira@apache.org>
To: common-issues@hadoop.apache.org
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Subject: [jira] [Updated] (HADOOP-12774) s3a should use
 UGI.getCurrentUser.getShortname() for username
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archived-at: Fri, 07 Oct 2016 16:35:22 -0000


     [ https://issues.apache.org/jira/browse/HADOOP-12774?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steve Loughran updated HADOOP-12774:
------------------------------------
    Status: Patch Available  (was: Open)

Created a PR which uses the current user *at time of FS initialization*  shortname for the user and group  on all FileStatus instances created during the FS life. 

Testing: all of s3a tests against s3a ireland, and the command line:

{code}
$ ./hadoop fs -ls s3a://hwdev-steve-ireland/
Found 1 items
drwxrwxrwx   - stevel stevel          0 2016-10-07 17:29 s3a://hwdev-steve-ireland/tests
{code}


> 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
>
> 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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