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https://issues.apache.org/jira/browse/HADOOP-13669?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15573022#comment-15573022
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Wei-Chiu Chuang commented on HADOOP-13669:
------------------------------------------

Got it [~xiaochen] 
The findbugs warning refers to trunk code, not the patch.
{quote}
cd /testptch/hadoop/hadoop-common-project/hadoop-kms
mvn -Dmaven.repo.local=/home/jenkins/yetus-m2/hadoop-trunk-patch-0 -Ptest-patch 
-DskipTests test-compile findbugs:findbugs -DskipTests=true > 
/testptch/hadoop/patchprocess/branch-findbugs-hadoop-common-project_hadoop-kms.txt
 2>&1
Elapsed:   0m 23s

hadoop-common-project/hadoop-kms in trunk has 2 extant Findbugs warnings.
{quote}

So Yetus should not flag findbugs warning in trunk. Probably worth an 
improvement.

+1 from me. I'll leave it untouched until EOB in case Allen has additional 
comments.

> KMS Server should log exceptions before throwing
> ------------------------------------------------
>
>                 Key: HADOOP-13669
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13669
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: kms
>            Reporter: Xiao Chen
>            Assignee: Suraj Acharya
>              Labels: supportability
>             Fix For: 2.8.0, 3.0.0-alpha2
>
>         Attachments: HADOOP-13369.2.patch, HADOOP-13369.patch, 
> HADOOP-13369.patch.1, HADOOP-13669.addendum.patch, trigger.patch
>
>
> In some recent investigation, it turns out when KMS throws an exception (into 
> tomcat), it's not logged anywhere and we can only see the exception message 
> from client-side, but not the stacktrace. Logging the stacktrance would help 
> debugging.



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