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https://issues.apache.org/jira/browse/HADOOP-13628?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15507155#comment-15507155
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Hadoop QA commented on HADOOP-13628:
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| (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 
30s{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 1 new or modified test 
files. {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  7m 
35s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  6m 
49s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
26s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
57s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 
12s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  1m 
16s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
46s{color} | {color:green} trunk passed {color} |
| {color:red}-1{color} | {color:red} mvninstall {color} | {color:red}  0m 
32s{color} | {color:red} hadoop-common in the patch failed. {color} |
| {color:red}-1{color} | {color:red} compile {color} | {color:red}  0m 
49s{color} | {color:red} root in the patch failed. {color} |
| {color:red}-1{color} | {color:red} javac {color} | {color:red}  0m 49s{color} 
| {color:red} root in the patch failed. {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}  
0m 24s{color} | {color:orange} hadoop-common-project/hadoop-common: The patch 
generated 4 new + 284 unchanged - 2 fixed = 288 total (was 286) {color} |
| {color:red}-1{color} | {color:red} mvnsite {color} | {color:red}  0m 
34s{color} | {color:red} hadoop-common in the patch failed. {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 
10s{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:red}-1{color} | {color:red} findbugs {color} | {color:red}  0m 
21s{color} | {color:red} hadoop-common in the patch failed. {color} |
| {color:red}-1{color} | {color:red} javadoc {color} | {color:red}  0m 
42s{color} | {color:red} hadoop-common-project_hadoop-common generated 2 new + 
0 unchanged - 0 fixed = 2 total (was 0) {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red}  0m 38s{color} 
| {color:red} hadoop-common 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} 24m 15s{color} | 
{color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:9560f25 |
| JIRA Issue | HADOOP-13628 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12829411/HADOOP-13628.01.patch 
|
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  
unit  findbugs  checkstyle  |
| uname | Linux cf27e95f7cd8 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 / c6d1d74 |
| Default Java | 1.8.0_101 |
| findbugs | v3.0.0 |
| mvninstall | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/10550/artifact/patchprocess/patch-mvninstall-hadoop-common-project_hadoop-common.txt
 |
| compile | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/10550/artifact/patchprocess/patch-compile-root.txt
 |
| javac | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/10550/artifact/patchprocess/patch-compile-root.txt
 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/10550/artifact/patchprocess/diff-checkstyle-hadoop-common-project_hadoop-common.txt
 |
| mvnsite | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/10550/artifact/patchprocess/patch-mvnsite-hadoop-common-project_hadoop-common.txt
 |
| findbugs | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/10550/artifact/patchprocess/patch-findbugs-hadoop-common-project_hadoop-common.txt
 |
| javadoc | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/10550/artifact/patchprocess/diff-javadoc-javadoc-hadoop-common-project_hadoop-common.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/10550/artifact/patchprocess/patch-unit-hadoop-common-project_hadoop-common.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/10550/testReport/ |
| modules | C: hadoop-common-project/hadoop-common U: 
hadoop-common-project/hadoop-common |
| Console output | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/10550/console |
| Powered by | Apache Yetus 0.4.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> Support to retrieve specific property from configuration via REST API
> ---------------------------------------------------------------------
>
>                 Key: HADOOP-13628
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13628
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: conf
>    Affects Versions: 2.7.3
>            Reporter: Weiwei Yang
>            Assignee: Weiwei Yang
>         Attachments: HADOOP-13628.01.patch
>
>
> Currently we can use rest API to retrieve all configuration properties per 
> daemon, but unable to get a specific property by name. This causes extra 
> parse work at client side when dealing with Hadoop configurations, and also 
> it's quite over head to send all configuration in a http response over 
> network. Propose to support following a {{name}} parameter in the http 
> request, by issuing
> {code}
> curl --header "Accept:application/json" 
> http://${RM_HOST}/conf?name=yarn.nodemanager.aux-services
> {code}
> get output
> {code}
> {"property"{"key":"yarn.resourcemanager.hostname","value":"${RM_HOST}","isFinal":false,"resource":"yarn-site.xml"}}
> {code}
> This change is fully backwards compatible.



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