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https://issues.apache.org/jira/browse/YARN-10194?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17067406#comment-17067406
 ] 

Hadoop QA commented on YARN-10194:
----------------------------------

| (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 
35s{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: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:brown} trunk Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 24m 
 1s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  2m  
8s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  1m 
18s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  2m 
13s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 
30m 54s{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}  3m 
28s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 
41s{color} | {color:green} trunk passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:red}-1{color} | {color:red} mvninstall {color} | {color:red}  0m 
47s{color} | {color:red} hadoop-yarn-server-resourcemanager in the patch 
failed. {color} |
| {color:red}-1{color} | {color:red} compile {color} | {color:red}  0m 
48s{color} | {color:red} hadoop-yarn-server-resourcemanager in the patch 
failed. {color} |
| {color:red}-1{color} | {color:red} javac {color} | {color:red}  0m 48s{color} 
| {color:red} hadoop-yarn-server-resourcemanager in the patch failed. {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  1m 
21s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} mvnsite {color} | {color:red}  1m 
10s{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} shadedclient {color} | {color:red}  9m 
36s{color} | {color:red} patch has errors when building and testing our client 
artifacts. {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red}  0m 
50s{color} | {color:red} hadoop-yarn-server-resourcemanager in the patch 
failed. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 
31s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:red}-1{color} | {color:red} unit {color} | {color:red}  1m 11s{color} 
| {color:red} hadoop-yarn-server-resourcemanager in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  1m 
29s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 84m  2s{color} | 
{color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker | Client=19.03.8 Server=19.03.8 Image:yetus/hadoop:4454c6d14b7 |
| JIRA Issue | YARN-10194 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12997787/YARN-10194-004.patch |
| Optional Tests |  dupname  asflicense  compile  javac  javadoc  mvninstall  
mvnsite  unit  shadedclient  findbugs  checkstyle  |
| uname | Linux 904ef8a013be 4.15.0-74-generic #84-Ubuntu SMP Thu Dec 19 
08:06:28 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / 0fa7bf4 |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_242 |
| findbugs | v3.1.0-RC1 |
| mvninstall | 
https://builds.apache.org/job/PreCommit-YARN-Build/25751/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/25751/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/25751/artifact/out/patch-compile-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt
 |
| mvnsite | 
https://builds.apache.org/job/PreCommit-YARN-Build/25751/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/25751/artifact/out/patch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-YARN-Build/25751/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/25751/testReport/ |
| Max. process+thread count | 295 (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/25751/console |
| Powered by | Apache Yetus 0.8.0   http://yetus.apache.org |


This message was automatically generated.



> YARN RMWebServices /scheduler-conf/validate leaks ZK Connections
> ----------------------------------------------------------------
>
>                 Key: YARN-10194
>                 URL: https://issues.apache.org/jira/browse/YARN-10194
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: capacityscheduler
>    Affects Versions: 3.3.0
>            Reporter: Akhil PB
>            Assignee: Prabhu Joseph
>            Priority: Critical
>         Attachments: YARN-10194-001.patch, YARN-10194-002.patch, 
> YARN-10194-003.patch, YARN-10194-004.patch
>
>
> YARN RMWebServices /scheduler-conf/validate leaks ZK Connections. Validation 
> API creates a new CapacityScheduler and missed to close after the validation. 
> Every CapacityScheduler#init opens MutableCSConfigurationProvider which opens 
> ZKConfigurationStore and creates a ZK Connection. 
> *ZK LOGS*
> {code}
> -03-12 16:45:51,881 WARN org.apache.zookeeper.server.NIOServerCnxnFactory: [2 
> times] Error accepting new connection: Too many connections from 
> /172.27.99.64 - max is 60
> 2020-03-12 16:45:52,449 WARN 
> org.apache.zookeeper.server.NIOServerCnxnFactory: Error accepting new 
> connection: Too many connections from /172.27.99.64 - max is 60
> 2020-03-12 16:45:52,710 WARN 
> org.apache.zookeeper.server.NIOServerCnxnFactory: Error accepting new 
> connection: Too many connections from /172.27.99.64 - max is 60
> 2020-03-12 16:45:52,876 WARN 
> org.apache.zookeeper.server.NIOServerCnxnFactory: [4 times] Error accepting 
> new connection: Too many connections from /172.27.99.64 - max is 60
> 2020-03-12 16:45:53,068 WARN 
> org.apache.zookeeper.server.NIOServerCnxnFactory: [2 times] Error accepting 
> new connection: Too many connections from /172.27.99.64 - max is 60
> 2020-03-12 16:45:53,391 WARN 
> org.apache.zookeeper.server.NIOServerCnxnFactory: [2 times] Error accepting 
> new connection: Too many connections from /172.27.99.64 - max is 60
> 2020-03-12 16:45:54,008 WARN 
> org.apache.zookeeper.server.NIOServerCnxnFactory: Error accepting new 
> connection: Too many connections from /172.27.99.64 - max is 60
> 2020-03-12 16:45:54,287 WARN 
> org.apache.zookeeper.server.NIOServerCnxnFactory: Error accepting new 
> connection: Too many connections from /172.27.99.64 - max is 60
> 2020-03-12 16:45:54,483 WARN 
> org.apache.zookeeper.server.NIOServerCnxnFactory: [4 times] Error accepting 
> new connection: Too many connections from /172.27.99.64 - max is 60
> {code}
> And there is an another bug in ZKConfigurationStore which has not handled 
> close() of ZKCuratorManager.



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