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https://issues.apache.org/jira/browse/YARN-9952?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16967313#comment-16967313
 ] 

Hadoop QA commented on YARN-9952:
---------------------------------

| (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 
37s{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} branch-2.7.2 Compile Tests {color} ||
| {color:red}-1{color} | {color:red} mvninstall {color} | {color:red}  0m 
27s{color} | {color:red} root in branch-2.7.2 failed. {color} |
| {color:red}-1{color} | {color:red} compile {color} | {color:red}  0m  
9s{color} | {color:red} hadoop-yarn-server-resourcemanager in branch-2.7.2 
failed. {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
22s{color} | {color:green} branch-2.7.2 passed {color} |
| {color:red}-1{color} | {color:red} mvnsite {color} | {color:red}  0m 
10s{color} | {color:red} hadoop-yarn-server-resourcemanager in branch-2.7.2 
failed. {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red}  0m  
9s{color} | {color:red} hadoop-yarn-server-resourcemanager in branch-2.7.2 
failed. {color} |
| {color:red}-1{color} | {color:red} javadoc {color} | {color:red}  0m  
9s{color} | {color:red} hadoop-yarn-server-resourcemanager in branch-2.7.2 
failed. {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:red}-1{color} | {color:red} mvninstall {color} | {color:red}  0m 
10s{color} | {color:red} hadoop-yarn-server-resourcemanager in the patch 
failed. {color} |
| {color:red}-1{color} | {color:red} compile {color} | {color:red}  0m  
9s{color} | {color:red} hadoop-yarn-server-resourcemanager in the patch failed. 
{color} |
| {color:red}-1{color} | {color:red} javac {color} | {color:red}  0m  9s{color} 
| {color:red} hadoop-yarn-server-resourcemanager in the patch failed. {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}  
0m 22s{color} | {color:orange} 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager:
 The patch generated 9 new + 614 unchanged - 0 fixed = 623 total (was 614) 
{color} |
| {color:red}-1{color} | {color:red} mvnsite {color} | {color:red}  0m 
11s{color} | {color:red} hadoop-yarn-server-resourcemanager in the patch 
failed. {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green}  0m 
 0s{color} | {color:green} The patch has no whitespace issues. {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red}  0m  
9s{color} | {color:red} hadoop-yarn-server-resourcemanager in the patch failed. 
{color} |
| {color:red}-1{color} | {color:red} javadoc {color} | {color:red}  0m 
10s{color} | {color:red} hadoop-yarn-server-resourcemanager in the patch 
failed. {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:red}-1{color} | {color:red} unit {color} | {color:red}  0m  9s{color} 
| {color:red} hadoop-yarn-server-resourcemanager in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
16s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black}  4m 24s{color} | 
{color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker | Client=19.03.4 Server=19.03.4 Image:yetus/hadoop:date2019-11-05 |
| JIRA Issue | YARN-9952 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12984894/YARN-9940-branch-2.7.2.001.patch
 |
| Optional Tests |  dupname  asflicense  compile  javac  javadoc  mvninstall  
mvnsite  unit  shadedclient  findbugs  checkstyle  |
| uname | Linux 67c93146a58f 4.15.0-66-generic #75-Ubuntu SMP Tue Oct 1 
05:24:09 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | branch-2.7.2 / b165c4f |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_222 |
| mvninstall | 
https://builds.apache.org/job/PreCommit-YARN-Build/25099/artifact/out/branch-mvninstall-root.txt
 |
| compile | 
https://builds.apache.org/job/PreCommit-YARN-Build/25099/artifact/out/branch-compile-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt
 |
| mvnsite | 
https://builds.apache.org/job/PreCommit-YARN-Build/25099/artifact/out/branch-mvnsite-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt
 |
| findbugs | 
https://builds.apache.org/job/PreCommit-YARN-Build/25099/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt
 |
| javadoc | 
https://builds.apache.org/job/PreCommit-YARN-Build/25099/artifact/out/branch-javadoc-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt
 |
| mvninstall | 
https://builds.apache.org/job/PreCommit-YARN-Build/25099/artifact/out/patch-mvninstall-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt
 |
| compile | 
https://builds.apache.org/job/PreCommit-YARN-Build/25099/artifact/out/patch-compile-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt
 |
| javac | 
https://builds.apache.org/job/PreCommit-YARN-Build/25099/artifact/out/patch-compile-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt
 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-YARN-Build/25099/artifact/out/diff-checkstyle-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt
 |
| mvnsite | 
https://builds.apache.org/job/PreCommit-YARN-Build/25099/artifact/out/patch-mvnsite-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt
 |
| findbugs | 
https://builds.apache.org/job/PreCommit-YARN-Build/25099/artifact/out/patch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt
 |
| javadoc | 
https://builds.apache.org/job/PreCommit-YARN-Build/25099/artifact/out/patch-javadoc-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-YARN-Build/25099/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-YARN-Build/25099/testReport/ |
| Max. process+thread count | 79 (vs. ulimit of 5500) |
| 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/25099/console |
| Powered by | Apache Yetus 0.8.0   http://yetus.apache.org |


This message was automatically generated.



> ontinuous scheduling thread crashes
> -----------------------------------
>
>                 Key: YARN-9952
>                 URL: https://issues.apache.org/jira/browse/YARN-9952
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: fairscheduler
>    Affects Versions: 2.7.2
>            Reporter: kailiu_dev
>            Priority: Major
>             Fix For: 2.7.2
>
>         Attachments: YARN-9940-branch-2.7.2.001.patch
>
>
> {color:#172b4d}2019-10-16 09:14:51,215 ERROR 
> org.apache.hadoop.yarn.YarnUncaughtExceptionHandler: Thread 
> Thread{color}[FairSchedulerContinuousScheduling,5,main]{color:#172b4d} threw 
> an Exception.{color}
> {color:#172b4d} java.lang.IllegalArgumentException: Comparison method 
> violates its general contract!{color}
> {color:#172b4d}         at java.util.TimSort.mergeHi(TimSort.java:868){color}
> {color:#172b4d}         at java.util.TimSort.mergeAt(TimSort.java:485){color}
> {color:#172b4d}         at 
> java.util.TimSort.mergeForceCollapse(TimSort.java:426){color}
> {color:#172b4d}         at java.util.TimSort.sort(TimSort.java:223){color}
> {color:#172b4d}         at java.util.TimSort.sort(TimSort.java:173){color}
> {color:#172b4d}         at java.util.Arrays.sort(Arrays.java:659){color}
> {color:#172b4d}         at 
> java.util.Collections.sort(Collections.java:217){color}
> {color:#172b4d}         at 
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.continuousSchedulingAttempt(FairScheduler.java:1117){color}
> {color:#172b4d}         at 
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler$ContinuousSchedulingThread.run(FairScheduler.java:296){color}



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