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https://issues.apache.org/jira/browse/YARN-7218?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16254253#comment-16254253
 ] 

Hadoop QA commented on YARN-7218:
---------------------------------

| (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 
21s{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} trunk Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 
11s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 15m 
21s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  7m 
15s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
59s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  2m 
24s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 
13m  6s{color} | {color:green} branch has no errors when building and testing 
our client artifacts. {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red}  1m  
7s{color} | {color:red} 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager
 in trunk has 1 extant Findbugs warnings. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 
49s{color} | {color:green} trunk passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 
10s{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  1m 
54s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  6m 
30s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  6m 
30s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
55s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  2m 
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} shadedclient {color} | {color:green} 
10m 29s{color} | {color:green} patch has no errors when building and testing 
our client artifacts. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  3m 
36s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 
40s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  3m 
10s{color} | {color:green} hadoop-yarn-common in the patch passed. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 59m 28s{color} 
| {color:red} hadoop-yarn-server-resourcemanager in the patch failed. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red}  3m 29s{color} 
| {color:red} hadoop-yarn-services-core in the patch failed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  0m 
29s{color} | {color:green} hadoop-yarn-services-api in the patch passed. 
{color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
32s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black}138m  4s{color} | 
{color:black} {color} |
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|| Reason || Tests ||
| Failed junit tests | 
hadoop.yarn.server.resourcemanager.scheduler.capacity.TestNodeLabelContainerAllocation
 |
|   | hadoop.yarn.service.TestYarnNativeServices |
| Timed out junit tests | 
org.apache.hadoop.yarn.server.resourcemanager.TestRMStoreCommands |
|   | 
org.apache.hadoop.yarn.server.resourcemanager.TestSubmitApplicationWithRMHA |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hadoop:5b98639 |
| JIRA Issue | YARN-7218 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12897827/YARN-7218.004.patch |
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  
unit  shadedclient  findbugs  checkstyle  |
| uname | Linux cb38a2161849 4.4.0-89-generic #112-Ubuntu SMP Mon Jul 31 
19:38:41 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / fac72ee |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_151 |
| findbugs | v3.1.0-RC1 |
| findbugs | 
https://builds.apache.org/job/PreCommit-YARN-Build/18506/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager-warnings.html
 |
| unit | 
https://builds.apache.org/job/PreCommit-YARN-Build/18506/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-YARN-Build/18506/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-applications_hadoop-yarn-services_hadoop-yarn-services-core.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-YARN-Build/18506/testReport/ |
| Max. process+thread count | 856 (vs. ulimit of 5000) |
| modules | C: hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager
 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services/hadoop-yarn-services-core
 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services-api
 U: hadoop-yarn-project/hadoop-yarn |
| Console output | 
https://builds.apache.org/job/PreCommit-YARN-Build/18506/console |
| Powered by | Apache Yetus 0.7.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> ApiServer REST API naming convention /ws/v1 is already used in Hadoop v2
> ------------------------------------------------------------------------
>
>                 Key: YARN-7218
>                 URL: https://issues.apache.org/jira/browse/YARN-7218
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: api, applications
>            Reporter: Eric Yang
>            Assignee: Eric Yang
>         Attachments: YARN-7218.001.patch, YARN-7218.002.patch, 
> YARN-7218.003.patch, YARN-7218.004.patch
>
>
> In YARN-6626, there is a desire to have ability to run ApiServer REST API in 
> Resource Manager, this can eliminate the requirement to deploy another daemon 
> service for submitting docker applications.  In YARN-5698, a new UI has been 
> implemented as a separate web application.  There are some problems in the 
> arrangement that can cause conflicts of how Java session are being managed.  
> The root context of Resource Manager web application is /ws.  This is hard 
> coded in startWebapp method in ResourceManager.java.  This means all the 
> session management is applied to Web URL of /ws prefix.  /ui2 is independent 
> of /ws context, therefore session management code doesn't apply to /ui2.  
> This could be a session management problem, if servlet based code is going to 
> be introduced into /ui2 web application.
> ApiServer code base is designed as a separate web application.  There is no 
> easy way to inject a separate web application into the same /ws context 
> because ResourceManager is already setup to bind to RMWebServices.  Unless 
> ApiServer code is moved into RMWebServices, otherwise, they will not share 
> the same session management.
> The alternate solution is to keep ApiServer prefix URL independent of /ws 
> context.  However, this will be a departure from YARN web services naming 
> convention.  This can be loaded as a separate web application in Resource 
> Manager jetty server.  One possible proposal is /app/v1/services.  This can 
> keep ApiServer code modular and independent from Resource Manager.



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