[ 
https://issues.apache.org/jira/browse/YARN-2527?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14157897#comment-14157897
 ] 

Hudson commented on YARN-2527:
------------------------------

SUCCESS: Integrated in Hadoop-Yarn-trunk #699 (See 
[https://builds.apache.org/job/Hadoop-Yarn-trunk/699/])
YARN-2527. Fixed the potential NPE in ApplicationACLsManager and added test 
cases for it. Contributed by Benoy Antony. (zjshen: rev 
1c93025a1b370db46e345161dbc15e03f829823f)
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/server/security/TestApplicationACLsManager.java
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/server/security/ApplicationACLsManager.java
* hadoop-yarn-project/CHANGES.txt


> NPE in ApplicationACLsManager
> -----------------------------
>
>                 Key: YARN-2527
>                 URL: https://issues.apache.org/jira/browse/YARN-2527
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>    Affects Versions: 2.5.0
>            Reporter: Benoy Antony
>            Assignee: Benoy Antony
>             Fix For: 2.6.0
>
>         Attachments: YARN-2527.patch, YARN-2527.patch, YARN-2527.patch
>
>
> NPE in _ApplicationACLsManager_ can result in 500 Internal Server Error.
> The relevant stacktrace snippet from the ResourceManager logs is as below
> {code}
> Caused by: java.lang.NullPointerException
>         at 
> org.apache.hadoop.yarn.server.security.ApplicationACLsManager.checkAccess(ApplicationACLsManager.java:104)
>         at 
> org.apache.hadoop.yarn.server.resourcemanager.webapp.AppBlock.render(AppBlock.java:101)
>         at 
> org.apache.hadoop.yarn.webapp.view.HtmlBlock.render(HtmlBlock.java:66)
>         at 
> org.apache.hadoop.yarn.webapp.view.HtmlBlock.renderPartial(HtmlBlock.java:76)
>         at org.apache.hadoop.yarn.webapp.View.render(View.java:235)
> {code}
> This issue was reported by [~miguenther].



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