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https://issues.apache.org/jira/browse/YARN-1859?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13942366#comment-13942366
 ] 

Hadoop QA commented on YARN-1859:
---------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest 
attachment 
  http://issues.apache.org/jira/secure/attachment/12635873/YARN-1859.1.patch
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author 
tags.

    {color:green}+1 tests included{color}.  The patch appears to include 1 new 
or modified test files.

    {color:green}+1 javac{color}.  The applied patch does not increase the 
total number of javac compiler warnings.

    {color:green}+1 javadoc{color}.  There were no new javadoc warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with 
eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new 
Findbugs (version 1.3.9) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase 
the total number of release audit warnings.

    {color:green}+1 core tests{color}.  The patch passed unit tests in 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-web-proxy.

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: 
https://builds.apache.org/job/PreCommit-YARN-Build/3412//testReport/
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/3412//console

This message is automatically generated.

> WebAppProxyServlet will throw ApplicationNotFoundException if the app is no 
> longer cached in RM
> -----------------------------------------------------------------------------------------------
>
>                 Key: YARN-1859
>                 URL: https://issues.apache.org/jira/browse/YARN-1859
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Zhijie Shen
>            Assignee: Zhijie Shen
>         Attachments: YARN-1859.1.patch
>
>
> WebAppProxyServlet checks null to determine whether the application is not 
> found or not.
> {code}
>  ApplicationReport applicationReport = getApplicationReport(id);
>       if(applicationReport == null) {
>         LOG.warn(req.getRemoteUser()+" Attempting to access "+id+
>             " that was not found");
> {code}
> However, WebAppProxyServlet calls AppReportFetcher, which consequently calls 
> ClientRMService. When application is not found, ClientRMService throws 
> ApplicationNotFoundException. Therefore, in WebAppProxyServlet, the following 
> logic to create the tracking url for a non-cached app will no longer be in 
> use.



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