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https://issues.apache.org/jira/browse/HADOOP-14659?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16095416#comment-16095416
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Hudson commented on HADOOP-14659:
---------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #12039 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/12039/])
HADOOP-14659. UGI getShortUserName does not need to search the Subject.
(kihwal: rev b3269f7cc119cbc51b16118b918f345f970804bc)
* (edit)
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/UserGroupInformation.java
> UGI getShortUserName does not need to search the Subject
> --------------------------------------------------------
>
> Key: HADOOP-14659
> URL: https://issues.apache.org/jira/browse/HADOOP-14659
> Project: Hadoop Common
> Issue Type: Improvement
> Components: common
> Affects Versions: 2.0.0-alpha
> Reporter: Daryn Sharp
> Assignee: Daryn Sharp
> Fix For: 2.9.0, 3.0.0-beta1, 2.8.3
>
> Attachments: HADOOP-14659.patch
>
>
> {{UGI#getShortUserName}} searches the subject for the {{User}} instance.
> It's not cheap to iterate a synchronized set, copy matches into a new set,
> then iterating that set. The UGI ctor already set the {{User}} into a final
> field...
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