[ 
https://issues.apache.org/jira/browse/YARN-7962?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16498149#comment-16498149
 ] 

genericqa commented on YARN-7962:
---------------------------------

| (/) *{color:green}+1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m 
31s{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {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:green}+1{color} | {color:green} test4tests {color} | {color:green}  0m 
 0s{color} | {color:green} The patch appears to include 1 new or modified test 
files. {color} |
|| || || || {color:brown} trunk Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 23m 
26s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
39s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
35s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
43s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 
10m 30s{color} | {color:green} branch has no errors when building and testing 
our client artifacts. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  1m  
7s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
27s{color} | {color:green} trunk passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  0m 
40s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
34s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 
34s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
29s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
39s{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} shadedclient {color} | {color:green} 
10m 30s{color} | {color:green} patch has no errors when building and testing 
our client artifacts. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  1m 
11s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
24s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 68m 
41s{color} | {color:green} hadoop-yarn-server-resourcemanager in the patch 
passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
25s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black}121m 15s{color} | 
{color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hadoop:abb62dd |
| JIRA Issue | YARN-7962 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12926095/YARN-7962.7.patch |
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  
unit  shadedclient  findbugs  checkstyle  |
| uname | Linux 856761d5c2b1 4.4.0-89-generic #112-Ubuntu SMP Mon Jul 31 
19:38:41 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / 6b21a59 |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_162 |
| findbugs | v3.1.0-RC1 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-YARN-Build/20921/testReport/ |
| Max. process+thread count | 869 (vs. ulimit of 10000) |
| modules | C: 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager
 U: 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager
 |
| Console output | 
https://builds.apache.org/job/PreCommit-YARN-Build/20921/console |
| Powered by | Apache Yetus 0.8.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> Race Condition When Stopping DelegationTokenRenewer
> ---------------------------------------------------
>
>                 Key: YARN-7962
>                 URL: https://issues.apache.org/jira/browse/YARN-7962
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>    Affects Versions: 3.0.0
>            Reporter: BELUGA BEHR
>            Priority: Critical
>         Attachments: YARN-7962.1.patch, YARN-7962.2.patch, YARN-7962.3.patch, 
> YARN-7962.4.patch, YARN-7962.6.patch, YARN-7962.7.patch
>
>
> [https://github.com/apache/hadoop/blob/69fa81679f59378fd19a2c65db8019393d7c05a2/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/security/DelegationTokenRenewer.java]
> {code:java}
>   private ThreadPoolExecutor renewerService;
>   private void processDelegationTokenRenewerEvent(
>       DelegationTokenRenewerEvent evt) {
>     serviceStateLock.readLock().lock();
>     try {
>       if (isServiceStarted) {
>         renewerService.execute(new DelegationTokenRenewerRunnable(evt));
>       } else {
>         pendingEventQueue.add(evt);
>       }
>     } finally {
>       serviceStateLock.readLock().unlock();
>     }
>   }
>   @Override
>   protected void serviceStop() {
>     if (renewalTimer != null) {
>       renewalTimer.cancel();
>     }
>     appTokens.clear();
>     allTokens.clear();
>     this.renewerService.shutdown();
> {code}
> {code:java}
> 2018-02-21 11:18:16,253  FATAL org.apache.hadoop.yarn.event.AsyncDispatcher: 
> Error in dispatcher thread
> java.util.concurrent.RejectedExecutionException: Task 
> org.apache.hadoop.yarn.server.resourcemanager.security.DelegationTokenRenewer$DelegationTokenRenewerRunnable@39bddaf2
>  rejected from java.util.concurrent.ThreadPoolExecutor@5f71637b[Terminated, 
> pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 15487]
>       at 
> java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2048)
>       at 
> java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:821)
>       at 
> java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1372)
>       at 
> org.apache.hadoop.yarn.server.resourcemanager.security.DelegationTokenRenewer.processDelegationTokenRenewerEvent(DelegationTokenRenewer.java:196)
>       at 
> org.apache.hadoop.yarn.server.resourcemanager.security.DelegationTokenRenewer.applicationFinished(DelegationTokenRenewer.java:734)
>       at 
> org.apache.hadoop.yarn.server.resourcemanager.RMAppManager.finishApplication(RMAppManager.java:199)
>       at 
> org.apache.hadoop.yarn.server.resourcemanager.RMAppManager.handle(RMAppManager.java:424)
>       at 
> org.apache.hadoop.yarn.server.resourcemanager.RMAppManager.handle(RMAppManager.java:65)
>       at 
> org.apache.hadoop.yarn.event.AsyncDispatcher.dispatch(AsyncDispatcher.java:177)
>       at 
> org.apache.hadoop.yarn.event.AsyncDispatcher$1.run(AsyncDispatcher.java:109)
>       at java.lang.Thread.run(Thread.java:745)
> {code}
> What I think is going on here is that the {{serviceStop}} method is not 
> setting the {{isServiceStarted}} flag to 'false'.
> Please update so that the {{serviceStop}} method grabs the 
> {{serviceStateLock}} and sets {{isServiceStarted}} to _false_, before 
> shutting down the {{renewerService}} thread pool, to avoid this condition.



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