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https://issues.apache.org/jira/browse/YARN-2919?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14240791#comment-14240791
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Hadoop QA commented on YARN-2919:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest 
attachment 
  
http://issues.apache.org/jira/secure/attachment/12686036/YARN-2919.20141209-1.patch
  against trunk revision 2e98ad3.

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

    {color:red}-1 tests included{color}.  The patch doesn't appear to include 
any new or modified tests.
                        Please justify why no new tests are needed for this 
patch.
                        Also please list what manual steps were performed to 
verify this patch.

    {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:red}-1 findbugs{color}.  The patch appears to introduce 15 new 
Findbugs (version 2.0.3) warnings.

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

    {color:red}-1 core tests{color}.  The patch failed these unit tests in 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager:

                  
org.apache.hadoop.yarn.server.resourcemanager.TestWorkPreservingRMRestart
                  org.apache.hadoop.yarn.server.resourcemanager.TestRM

Test results: 
https://builds.apache.org/job/PreCommit-YARN-Build/6069//testReport/
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-YARN-Build/6069//artifact/patchprocess/newPatchFindbugsWarningshadoop-yarn-server-resourcemanager.html
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/6069//console

This message is automatically generated.

> Potential race between renew and cancel in DelegationTokenRenwer 
> -----------------------------------------------------------------
>
>                 Key: YARN-2919
>                 URL: https://issues.apache.org/jira/browse/YARN-2919
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: security
>    Affects Versions: 2.6.0
>            Reporter: Karthik Kambatla
>            Assignee: Naganarasimha G R
>            Priority: Critical
>         Attachments: YARN-2919.20141209-1.patch
>
>
> YARN-2874 fixes a deadlock in DelegationTokenRenewer, but there is still a 
> race because of which a renewal in flight isn't interrupted by a cancel. 



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