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https://issues.apache.org/jira/browse/HADOOP-13190?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15414414#comment-15414414
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Hadoop QA commented on HADOOP-13190:
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m 
13s{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} mvninstall {color} | {color:green}  8m 
12s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
20s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
18s{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} asflicense {color} | {color:green}  0m 
16s{color} | {color:green} The patch does not generate ASF License warnings. 
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| {color:black}{color} | {color:black} {color} | {color:black}  9m 37s{color} | 
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:9560f25 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12822900/HADOOP-13190.004.patch
 |
| JIRA Issue | HADOOP-13190 |
| Optional Tests |  asflicense  mvnsite  |
| uname | Linux 5387d532910d 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 / cc48251 |
| modules | C: hadoop-common-project/hadoop-kms U: 
hadoop-common-project/hadoop-kms |
| Console output | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/10214/console |
| Powered by | Apache Yetus 0.4.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> LoadBalancingKMSClientProvider should be documented
> ---------------------------------------------------
>
>                 Key: HADOOP-13190
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13190
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: documentation, kms
>    Affects Versions: 2.7.0
>            Reporter: Wei-Chiu Chuang
>            Assignee: Wei-Chiu Chuang
>              Labels: supportability
>         Attachments: HADOOP-13190.001.patch, HADOOP-13190.002.patch, 
> HADOOP-13190.003.patch, HADOOP-13190.004.patch
>
>
> Currently, there are two ways to achieve KMS HA.
> The first one, and the only documented one, is running multiple KMS instances 
> behind a load balancer. 
> https://hadoop.apache.org/docs/stable/hadoop-kms/index.html
> The other way, is make use of LoadBalancingKMSClientProvider which is added 
> in HADOOP-11620. However the usage is undocumented.
> I think we should update the KMS document to introduce 
> LoadBalancingKMSClientProvider, provide examples, and also update 
> kms-site.xml to explain it.



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