Steve Loughran created HADOOP-12774:
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Summary: 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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