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Date: Mon, 11 May 2015 21:41:00 +0000 (UTC)
From: "Hadoop QA (JIRA)" <jira@apache.org>
To: common-issues@hadoop.apache.org
Message-ID: <JIRA.12828951.1431376100000.78435.1431380460674@Atlassian.JIRA>
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 <JIRA.12828951.1431376100354@arcas>
Subject: [jira] [Commented] (HADOOP-11958) MetricsSystemImpl fails to show
 backtrace when an error occurs
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    [ https://issues.apache.org/jira/browse/HADOOP-11958?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14538690#comment-14538690 ] 

Hadoop QA commented on HADOOP-11958:
------------------------------------

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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch |  14m 47s | Pre-patch trunk compilation is healthy. |
| {color:green}+1{color} | @author |   0m  0s | The patch does not contain any @author tags. |
| {color:red}-1{color} | tests included |   0m  0s | 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:green}+1{color} | javac |   7m 33s | There were no new javac warning messages. |
| {color:green}+1{color} | javadoc |   9m 42s | There were no new javadoc warning messages. |
| {color:green}+1{color} | release audit |   0m 22s | The applied patch does not increase the total number of release audit warnings. |
| {color:green}+1{color} | checkstyle |   1m  5s | There were no new checkstyle issues. |
| {color:green}+1{color} | whitespace |   0m  0s | The patch has no lines that end in whitespace. |
| {color:green}+1{color} | install |   1m 35s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 31s | The patch built with eclipse:eclipse. |
| {color:green}+1{color} | findbugs |   1m 39s | The patch does not introduce any new Findbugs (version 2.0.3) warnings. |
| {color:green}+1{color} | common tests |  22m 55s | Tests passed in hadoop-common. |
| | |  60m 13s | |
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|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12732003/HADOOP-11958.001.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / ea11590 |
| hadoop-common test log | https://builds.apache.org/job/PreCommit-HADOOP-Build/6593/artifact/patchprocess/testrun_hadoop-common.txt |
| Test Results | https://builds.apache.org/job/PreCommit-HADOOP-Build/6593/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf903.gq1.ygridcore.net 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 |
| Console output | https://builds.apache.org/job/PreCommit-HADOOP-Build/6593/console |


This message was automatically generated.

> MetricsSystemImpl fails to show backtrace when an error occurs
> --------------------------------------------------------------
>
>                 Key: HADOOP-11958
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11958
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>         Attachments: HADOOP-11958.001.patch
>
>
> While investigating YARN-3619 it was frustrating that MetricsSystemImpl was logging a ConcurrentModificationException but without any backtrace.  Logging a backtrace would be very beneficial to tracking down the cause of the problem.


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