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https://issues.apache.org/jira/browse/YARN-4496?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15109781#comment-15109781
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Hadoop QA commented on YARN-4496:
---------------------------------

| (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 0s 
{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:green}+1{color} | {color:green} test4tests {color} | {color:green} 0m 
0s {color} | {color:green} The patch appears to include 3 new or modified test 
files. {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m 44s 
{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 8m 
6s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 2m 1s 
{color} | {color:green} trunk passed with JDK v1.8.0_66 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 2m 18s 
{color} | {color:green} trunk passed with JDK v1.7.0_91 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 
31s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 2m 19s 
{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 1m 
7s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 4m 
48s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 59s 
{color} | {color:green} trunk passed with JDK v1.8.0_66 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 4m 23s 
{color} | {color:green} trunk passed with JDK v1.7.0_91 {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m 44s 
{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m 
57s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 2m 26s 
{color} | {color:green} the patch passed with JDK v1.8.0_66 {color} |
| {color:red}-1{color} | {color:red} javac {color} | {color:red} 5m 7s {color} 
| {color:red} hadoop-yarn-project_hadoop-yarn-jdk1.8.0_66 with JDK v1.8.0_66 
generated 1 new + 9 unchanged - 0 fixed = 10 total (was 9) {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 2m 26s 
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 2m 22s 
{color} | {color:green} the patch passed with JDK v1.7.0_91 {color} |
| {color:red}-1{color} | {color:red} javac {color} | {color:red} 7m 29s {color} 
| {color:red} hadoop-yarn-project_hadoop-yarn-jdk1.7.0_91 with JDK v1.7.0_91 
generated 1 new + 10 unchanged - 0 fixed = 11 total (was 10) {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 2m 22s 
{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red} 0m 33s 
{color} | {color:red} hadoop-yarn-project/hadoop-yarn: patch generated 3 new + 
221 unchanged - 0 fixed = 224 total (was 221) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 2m 36s 
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 1m 
5s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green} 0m 
0s {color} | {color:green} Patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} xml {color} | {color:green} 0m 1s 
{color} | {color:green} The patch has no ill-formed XML file. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 6m 
31s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 2m 47s 
{color} | {color:green} the patch passed with JDK v1.8.0_66 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 4m 37s 
{color} | {color:green} the patch passed with JDK v1.7.0_91 {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 0m 23s 
{color} | {color:green} hadoop-yarn-api in the patch passed with JDK v1.8.0_66. 
{color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 2m 3s 
{color} | {color:green} hadoop-yarn-common in the patch passed with JDK 
v1.8.0_66. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 8m 44s {color} 
| {color:red} hadoop-yarn-server-nodemanager in the patch failed with JDK 
v1.8.0_66. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 6m 20s {color} 
| {color:red} hadoop-yarn-server-tests in the patch failed with JDK v1.8.0_66. 
{color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 64m 37s {color} 
| {color:red} hadoop-yarn-client in the patch failed with JDK v1.8.0_66. 
{color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 0m 25s 
{color} | {color:green} hadoop-yarn-api in the patch passed with JDK v1.7.0_91. 
{color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 2m 15s 
{color} | {color:green} hadoop-yarn-common in the patch passed with JDK 
v1.7.0_91. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 9m 13s {color} 
| {color:red} hadoop-yarn-server-nodemanager in the patch failed with JDK 
v1.7.0_91. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 6m 24s {color} 
| {color:red} hadoop-yarn-server-tests in the patch failed with JDK v1.7.0_91. 
{color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 0m 23s {color} 
| {color:red} hadoop-yarn-client in the patch failed with JDK v1.7.0_91. 
{color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 
23s {color} | {color:green} Patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 157m 7s {color} 
| {color:black} {color} |
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|| Reason || Tests ||
| JDK v1.8.0_66 Failed junit tests | 
hadoop.yarn.server.TestContainerManagerSecurity |
|   | hadoop.yarn.server.TestMiniYarnClusterNodeUtilization |
|   | hadoop.yarn.client.TestGetGroups |
| JDK v1.8.0_66 Timed out junit tests | 
org.apache.hadoop.yarn.client.cli.TestYarnCLI |
|   | org.apache.hadoop.yarn.client.api.impl.TestAMRMClient |
|   | org.apache.hadoop.yarn.client.api.impl.TestYarnClient |
|   | org.apache.hadoop.yarn.client.api.impl.TestNMClient |
| JDK v1.7.0_91 Failed junit tests | 
hadoop.yarn.server.TestContainerManagerSecurity |
|   | hadoop.yarn.server.TestMiniYarnClusterNodeUtilization |
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:0ca8df7 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12783417/YARN-4496.3.patch |
| JIRA Issue | YARN-4496 |
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  
unit  findbugs  checkstyle  xml  |
| uname | Linux 07e99f8f4402 3.13.0-36-lowlatency #63-Ubuntu SMP PREEMPT Wed 
Sep 3 21:56:12 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh 
|
| git revision | trunk / 7905788 |
| Default Java | 1.7.0_91 |
| Multi-JDK versions |  /usr/lib/jvm/java-8-oracle:1.8.0_66 
/usr/lib/jvm/java-7-openjdk-amd64:1.7.0_91 |
| findbugs | v3.0.0 |
| javac | hadoop-yarn-project_hadoop-yarn-jdk1.8.0_66: 
https://builds.apache.org/job/PreCommit-YARN-Build/10346/artifact/patchprocess/diff-compile-javac-hadoop-yarn-project_hadoop-yarn-jdk1.8.0_66.txt
 |
| javac | hadoop-yarn-project_hadoop-yarn-jdk1.7.0_91: 
https://builds.apache.org/job/PreCommit-YARN-Build/10346/artifact/patchprocess/diff-compile-javac-hadoop-yarn-project_hadoop-yarn-jdk1.7.0_91.txt
 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-YARN-Build/10346/artifact/patchprocess/diff-checkstyle-hadoop-yarn-project_hadoop-yarn.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-YARN-Build/10346/artifact/patchprocess/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-nodemanager-jdk1.8.0_66.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-YARN-Build/10346/artifact/patchprocess/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-tests-jdk1.8.0_66.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-YARN-Build/10346/artifact/patchprocess/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-client-jdk1.8.0_66.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-YARN-Build/10346/artifact/patchprocess/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-nodemanager-jdk1.7.0_91.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-YARN-Build/10346/artifact/patchprocess/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-tests-jdk1.7.0_91.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-YARN-Build/10346/artifact/patchprocess/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-client-jdk1.7.0_91.txt
 |
| unit test logs |  
https://builds.apache.org/job/PreCommit-YARN-Build/10346/artifact/patchprocess/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-tests-jdk1.8.0_66.txt
 
https://builds.apache.org/job/PreCommit-YARN-Build/10346/artifact/patchprocess/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-client-jdk1.8.0_66.txt
 
https://builds.apache.org/job/PreCommit-YARN-Build/10346/artifact/patchprocess/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-tests-jdk1.7.0_91.txt
 |
| JDK v1.7.0_91  Test Results | 
https://builds.apache.org/job/PreCommit-YARN-Build/10346/testReport/ |
| modules | C:  hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api   
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common   
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager
   hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-tests  
 hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client  U: 
hadoop-yarn-project/hadoop-yarn |
| Max memory used | 77MB |
| Powered by | Apache Yetus 0.2.0-SNAPSHOT   http://yetus.apache.org |
| Console output | 
https://builds.apache.org/job/PreCommit-YARN-Build/10346/console |


This message was automatically generated.



> Improve HA ResourceManager Failover detection on the client
> -----------------------------------------------------------
>
>                 Key: YARN-4496
>                 URL: https://issues.apache.org/jira/browse/YARN-4496
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: client, resourcemanager
>            Reporter: Arun Suresh
>            Assignee: Jian He
>         Attachments: YARN-4496.1.patch, YARN-4496.2.patch, YARN-4496.3.patch, 
> YARN-4496.4.patch
>
>
> HDFS deployments can currently use the {{RequestHedgingProxyProvider}} to 
> improve Namenode failover detection in the client. It does this by 
> concurrently trying all namenodes and picks the namenode that returns the 
> fastest with a successful response as the active node.
> It would be useful to have a similar ProxyProvider for the Yarn RM (it can 
> possibly be done by converging some the class hierarchies to use the same 
> ProxyProvider)
> This would especially be useful for large YARN deployments with multiple 
> standby RMs where clients will be able to pick the active RM without having 
> to traverse a list of configured RMs. 



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