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https://issues.apache.org/jira/browse/HADOOP-13081?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15400042#comment-15400042
 ] 

Hadoop QA commented on HADOOP-13081:
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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 
14s{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}  6m 
41s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  7m  
6s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
28s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m  
3s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 
15s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  1m 
31s{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:green}+1{color} | {color:green} mvninstall {color} | {color:green}  0m 
43s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  7m 
51s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} javac {color} | {color:red}  7m 51s{color} 
| {color:red} root generated 1 new + 709 unchanged - 1 fixed = 710 total (was 
710) {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}  
0m 27s{color} | {color:orange} hadoop-common-project/hadoop-common: The patch 
generated 6 new + 150 unchanged - 0 fixed = 156 total (was 150) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
56s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 
12s{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 3 line(s) that end in whitespace. Use git 
apply --whitespace=fix <<patch_file>>. Refer https://git-scm.com/docs/git-apply 
{color} |
| {color:red}-1{color} | {color:red} whitespace {color} | {color:red}  0m  
0s{color} | {color:red} The patch 4 line(s) with tabs. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  1m 
38s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
46s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  8m 
45s{color} | {color:green} hadoop-common in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
22s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 41m 17s{color} | 
{color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:9560f25 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12821080/HADOOP-13081.02.patch 
|
| JIRA Issue | HADOOP-13081 |
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  
unit  findbugs  checkstyle  |
| uname | Linux 176ab1e88879 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 / 95f2b98 |
| Default Java | 1.8.0_101 |
| findbugs | v3.0.0 |
| javac | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/10122/artifact/patchprocess/diff-compile-javac-root.txt
 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/10122/artifact/patchprocess/diff-checkstyle-hadoop-common-project_hadoop-common.txt
 |
| whitespace | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/10122/artifact/patchprocess/whitespace-eol.txt
 |
| whitespace | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/10122/artifact/patchprocess/whitespace-tabs.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/10122/testReport/ |
| modules | C: hadoop-common-project/hadoop-common U: 
hadoop-common-project/hadoop-common |
| Console output | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/10122/console |
| Powered by | Apache Yetus 0.4.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> add the ability to create multiple UGIs/subjects from one kerberos login
> ------------------------------------------------------------------------
>
>                 Key: HADOOP-13081
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13081
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Sergey Shelukhin
>            Assignee: Sergey Shelukhin
>         Attachments: HADOOP-13081.01.patch, HADOOP-13081.02.patch, 
> HADOOP-13081.patch
>
>
> We have a scenario where we log in with kerberos as a certain user for some 
> tasks, but also want to add tokens to the resulting UGI that would be 
> specific to each task. We don't want to authenticate with kerberos for every 
> task.
> I am not sure how this can be accomplished with the existing UGI interface. 
> Perhaps some clone method would be helpful, similar to createProxyUser minus 
> the proxy stuff; or it could just relogin anew from ticket cache. 
> getUGIFromTicketCache seems like the best option in existing code, but there 
> doesn't appear to be a consistent way of handling ticket cache location - the 
> above method, that I only see called in test, is using a config setting that 
> is not used anywhere else, and the env variable for the location that is used 
> in the main ticket cache related methods is not set uniformly on all paths - 
> therefore, trying to find the correct ticket cache and passing it via the 
> config setting to getUGIFromTicketCache seems even hackier than doing the 
> clone via reflection ;) Moreover, getUGIFromTicketCache ignores the user 
> parameter on the main path - it logs a warning for multiple principals and 
> then logs in with first available.



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