[ 
https://issues.apache.org/jira/browse/YARN-6563?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16000055#comment-16000055
 ] 

Hadoop QA commented on YARN-6563:
---------------------------------

| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m 
23s{color} | {color:blue} Docker mode activated. {color} |
| {color:green}+1{color} | {color:green} @author {color} | {color:green}  0m  
0s{color} | {color:green} The patch does not contain any @author tags. {color} |
| {color:red}-1{color} | {color:red} test4tests {color} | {color:red}  0m  
0s{color} | {color:red} 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} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 14m 
18s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
21s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
13s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
21s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 
16s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  0m 
33s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
16s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  0m 
18s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
17s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 
17s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
11s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
19s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 
13s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green}  0m 
 0s{color} | {color:green} The patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  0m 
32s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
11s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  0m 
42s{color} | {color:green} hadoop-yarn-server-timelineservice in the patch 
passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
19s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 21m 15s{color} | 
{color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:14b5c93 |
| JIRA Issue | YARN-6563 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12866793/YARN-6563.00.patch |
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  
unit  findbugs  checkstyle  |
| uname | Linux 8b2ececbd721 3.13.0-106-generic #153-Ubuntu SMP Tue Dec 6 
15:44:32 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh 
|
| git revision | trunk / d6eed5a |
| Default Java | 1.8.0_121 |
| findbugs | v3.1.0-RC1 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-YARN-Build/15852/testReport/ |
| modules | C: 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice
 U: 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice
 |
| Console output | 
https://builds.apache.org/job/PreCommit-YARN-Build/15852/console |
| Powered by | Apache Yetus 0.5.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> ConcurrentModificationException in TimelineCollectorManager while stopping RM
> -----------------------------------------------------------------------------
>
>                 Key: YARN-6563
>                 URL: https://issues.apache.org/jira/browse/YARN-6563
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>            Reporter: Rohith Sharma K S
>            Assignee: Haibo Chen
>         Attachments: YARN-6563.00.patch
>
>
> It is seen that ConcurrentModificationException while stopping RM when ATSv2 
> enabled. 
> {noformat}
> 2017-05-05 15:04:11,563 WARN org.apache.hadoop.service.CompositeService: When 
> stopping the service 
> org.apache.hadoop.yarn.server.resourcemanager.timelineservice.RMTimelineCollectorManager
>  : java.util.ConcurrentModificationException
> java.util.ConcurrentModificationException
>       at java.util.HashMap$HashIterator.nextNode(HashMap.java:1437)
>       at java.util.HashMap$ValueIterator.next(HashMap.java:1466)
>       at 
> org.apache.hadoop.yarn.server.timelineservice.collector.TimelineCollectorManager.serviceStop(TimelineCollectorManager.java:222)
>       at 
> org.apache.hadoop.service.AbstractService.stop(AbstractService.java:221)
>       at 
> org.apache.hadoop.service.ServiceOperations.stop(ServiceOperations.java:52)
>       at 
> org.apache.hadoop.service.ServiceOperations.stopQuietly(ServiceOperations.java:80)
>       at 
> org.apache.hadoop.service.CompositeService.stop(CompositeService.java:157)
>       at 
> org.apache.hadoop.service.CompositeService.serviceStop(CompositeService.java:131)
>       at 
> org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.serviceStop(ResourceManager.java:1285)
> {noformat}



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