Hadoop QA commented on YARN-3389:

{color:red}-1 overall{color}.  Here are the results of testing the latest 
  against trunk revision 0b9f12c.

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

    {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 
                        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 

    {color:green}+1 findbugs{color}.  The patch does not introduce any 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 


Test results: 
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/7075//console

This message is automatically generated.

> Two attempts might operate on same data structures concurrently
> ---------------------------------------------------------------
>                 Key: YARN-3389
>                 URL: https://issues.apache.org/jira/browse/YARN-3389
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>    Affects Versions: 2.6.0
>            Reporter: Jun Gong
>            Assignee: Jun Gong
>         Attachments: YARN-3389.01.patch
> In AttemptFailedTransition, the new attempt will get 
> state('justFinishedContainers' and 'finishedContainersSentToAM') reference 
> from the failed attempt. Then the two attempts might operate on these two 
> variables concurrently, e.g. they might update 'justFinishedContainers' 
> concurrently when they are both handling CONTAINER_FINISHED event.

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