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https://issues.apache.org/jira/browse/YARN-10215?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17071030#comment-17071030
 ] 

Hadoop QA commented on YARN-10215:
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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 
26s{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:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 
19s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 22m 
42s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  9m  
9s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  1m 
22s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m 
11s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 
18m 32s{color} | {color:green} branch has no errors when building and testing 
our client artifacts. {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  0m  
0s{color} | {color:blue} Skipped patched modules with no Java source: 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  1m 
13s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
50s{color} | {color:green} trunk passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 
17s{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  0m 
47s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  8m 
18s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  8m 
18s{color} | {color:green} the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}  
1m 27s{color} | {color:orange} hadoop-yarn-project/hadoop-yarn: The patch 
generated 1 new + 1 unchanged - 0 fixed = 2 total (was 1) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m 
13s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} whitespace {color} | {color:red}  0m  
0s{color} | {color:red} The patch has 1 line(s) that end in whitespace. Use git 
apply --whitespace=fix <<patch_file>>. Refer https://git-scm.com/docs/git-apply 
{color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 
15m 27s{color} | {color:green} patch has no errors when building and testing 
our client artifacts. {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  0m  
0s{color} | {color:blue} Skipped patched modules with no Java source: 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red}  1m 
23s{color} | {color:red} 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common 
generated 1 new + 0 unchanged - 0 fixed = 1 total (was 0) {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
44s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  2m 
51s{color} | {color:green} hadoop-yarn-server-common in the patch passed. 
{color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  3m 
37s{color} | {color:green} hadoop-yarn-ui in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
47s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 91m 59s{color} | 
{color:black} {color} |
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|| Reason || Tests ||
| FindBugs | 
module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common
 |
|  |  Found reliance on default encoding in 
org.apache.hadoop.yarn.server.webapp.LogServlet.lambda$createEmptyStream$0(OutputStream):in
 
org.apache.hadoop.yarn.server.webapp.LogServlet.lambda$createEmptyStream$0(OutputStream):
 String.getBytes()  At LogServlet.java:[line 323] |
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|| Subsystem || Report/Notes ||
| Docker | Client=19.03.8 Server=19.03.8 Image:yetus/hadoop:4454c6d14b7 |
| JIRA Issue | YARN-10215 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12998224/YARN-10025.001.patch |
| Optional Tests |  dupname  asflicense  compile  javac  javadoc  mvninstall  
mvnsite  unit  shadedclient  findbugs  checkstyle  |
| uname | Linux 4e31ba411106 4.15.0-58-generic #64-Ubuntu SMP Tue Aug 6 
11:12:41 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / 960c9eb |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_242 |
| findbugs | v3.1.0-RC1 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-YARN-Build/25785/artifact/out/diff-checkstyle-hadoop-yarn-project_hadoop-yarn.txt
 |
| whitespace | 
https://builds.apache.org/job/PreCommit-YARN-Build/25785/artifact/out/whitespace-eol.txt
 |
| findbugs | 
https://builds.apache.org/job/PreCommit-YARN-Build/25785/artifact/out/new-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-common.html
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-YARN-Build/25785/testReport/ |
| Max. process+thread count | 414 (vs. ulimit of 5500) |
| modules | C: 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui U: 
hadoop-yarn-project/hadoop-yarn |
| Console output | 
https://builds.apache.org/job/PreCommit-YARN-Build/25785/console |
| Powered by | Apache Yetus 0.8.0   http://yetus.apache.org |


This message was automatically generated.



> Endpoint for obtaining direct URL for the logs
> ----------------------------------------------
>
>                 Key: YARN-10215
>                 URL: https://issues.apache.org/jira/browse/YARN-10215
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: yarn
>    Affects Versions: 3.3.0
>            Reporter: Adam Antal
>            Assignee: Andras Gyori
>            Priority: Major
>         Attachments: YARN-10025.001.patch
>
>
> If CORS protected UIs are set up, there is an issue when the browser tries to 
> access the logs of a running container in the RM web UIv2.
> Assuming ATS is not up, the browser follows the following call chain:
> - Tries to access ATS, it fails, falls back to JHS
> - From RM the browser received basic app info, we know that the application 
> is running
> - From the JHS we got the list of containers and their log files.
> - When we try to access a specific log file, the JHS redirects the request to 
> the NM's UI (on which node the container is running). This redirect is 
> performed by the browser automatically. In this setup the host is considered 
> as a protected information, thus the browser omits the "Origin" field from 
> the request when this redirect is done. The browser then denies access to the 
> NodeManager's web UI due to the CORS header set up for NM, but the Origin is 
> null in the redirect request. 
> - Finally, "Logs are unavailable" message is shown in the RM web UIv2 due to 
> the CORS violation.
> We should fix this. As an approach we can expose another endpoints which only 
> returns the URL of the NodeManager what we should call directly from the UIv2 
> in order to receive the log. This adds a bit of a complexity, but will enable 
> users to keep the CORS protected setup.



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