[ https://issues.apache.org/jira/browse/HADOOP-13903?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15811775#comment-15811775 ] 

Hadoop QA commented on HADOOP-13903:
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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  0s{color} | {color:blue} Docker mode activated. {color} |
| {color:red}-1{color} | {color:red} patch {color} | {color:red}  0m  6s{color} | {color:red} HADOOP-13903 does not apply to trunk. Rebase required? Wrong Branch? See https://wiki.apache.org/hadoop/HowToContribute for help. {color} |
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|| Subsystem || Report/Notes ||
| JIRA Issue | HADOOP-13903 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12846322/HADOOP-13903-branch2.7-6.patch |
| Console output | https://builds.apache.org/job/PreCommit-HADOOP-Build/11399/console |
| Powered by | Apache Yetus 0.5.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> KMS does not provide any useful debug information
> -------------------------------------------------
>
>                 Key: HADOOP-13903
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13903
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: kms
>    Affects Versions: 2.9.0, 3.0.0-alpha2
>            Reporter: Tristan Stevens
>            Assignee: Tristan Stevens
>            Priority: Minor
>         Attachments: HADOOP-13903-2.patch, HADOOP-13903-3.patch, HADOOP-13903-5-branch2.7.patch, HADOOP-13903-5.patch, HADOOP-13903-6.patch, HADOOP-13903-branch2.7-6.patch, HADOOP-13903.patch
>
>
> At the moment there is no debug or trace level logs generated for KMS authorisation decisions. In order for users to understand what is going on in given scenarios this would be invaluable.
> Code should endeavour to keep as much work off the sunny-day-code-path as much as possible.



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