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From "Xiao Chen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-13669) KMS Server should log exceptions before throwing
Date Mon, 24 Oct 2016 16:14:59 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-13669?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15602451#comment-15602451
] 

Xiao Chen commented on HADOOP-13669:
------------------------------------

The pre-commit -1 is again on the trunk run. For the patched run, we can see this:
{noformat}
============================================================================
============================================================================
                         findbugs detection: patch
============================================================================
============================================================================
....
hadoop-common-project/hadoop-kms generated 0 new + 0 unchanged - 2 fixed = 0 total (was 2)
{noformat}
So it should be fixed this time... Also verified via {{mvn compile findbugs:findbugs}} locally.

> 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.addendem2.patch, HADOOP-13669.addendum.patch, trigger.02.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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