[jira] [Commented] (YARN-285) RM should be able to provide a tracking link for apps that have already been purged

["Hadoop QA (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/YARN-285?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13537754#comment-13537754 ] 

Hadoop QA commented on YARN-285:
--------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12562055/YARN-285.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}.  The javadoc tool did not generate any 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-common 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/244//testReport/
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/244//console

This message is automatically generated.
                
> RM should be able to provide a tracking link for apps that have already been purged
> -----------------------------------------------------------------------------------
>
>                 Key: YARN-285
>                 URL: https://issues.apache.org/jira/browse/YARN-285
>             Project: Hadoop YARN
>          Issue Type: Improvement
>    Affects Versions: 3.0.0, 0.23.5
>            Reporter: Derek Dagit
>            Assignee: Derek Dagit
>         Attachments: YARN-285-branch-0.23.patch, YARN-285.patch
>
>
> As applications complete, the RM tracks their IDs in a completed list.  This list is routinely truncated to limit the total number of application remembered by the RM.
> When a user clicks the History for a job, either the browser is redirected to the application's tracking link obtained from the stored application instance.  But when the application has been purged from the RM, an error is displayed.
> In very busy clusters the rate at which applications complete can cause applications to be purged from the RM's internal list within hours, which breaks the proxy URLs users have saved for their jobs.
> We would like the RM to provide valid tracking links persist so that users are not frustrated by broken links.

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