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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-11958) MetricsSystemImpl fails to show backtrace when an error occurs
Date Thu, 25 Jun 2015 16:12:08 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11958?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14601446#comment-14601446
] 

Hudson commented on HADOOP-11958:
---------------------------------

FAILURE: Integrated in Hadoop-Mapreduce-trunk-Java8 #237 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Java8/237/])
HADOOP-11958. MetricsSystemImpl fails to show backtrace when an error occurs (Jason Lowe via
jeagles) (jeagles: rev 2236b577a34b069c0d1f91da99f63a199f260ac2)
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/impl/MetricsSystemImpl.java
* hadoop-common-project/hadoop-common/CHANGES.txt


> 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
>             Fix For: 3.0.0, 2.8.0
>
>         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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