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Date: Thu, 1 Mar 2012 12:42:03 +0000 (UTC)
From: "Hudson (Commented) (JIRA)" <jira@apache.org>
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Subject: [jira] [Commented] (HADOOP-8118) Print the stack trace of
 InstanceAlreadyExistsException in trace level
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    [ https://issues.apache.org/jira/browse/HADOOP-8118?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13219995#comment-13219995 ] 

Hudson commented on HADOOP-8118:
--------------------------------

Integrated in Hadoop-Hdfs-trunk #971 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk/971/])
    HADOOP-8118.  In metrics2.util.MBeans, change log level to trace for the stack trace of InstanceAlreadyExistsException. (Revision 1295240)

     Result = SUCCESS
szetszwo : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1295240
Files : 
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/util/MBeans.java

                
> Print the stack trace of InstanceAlreadyExistsException in trace level
> ----------------------------------------------------------------------
>
>                 Key: HADOOP-8118
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8118
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: metrics
>            Reporter: Tsz Wo (Nicholas), SZE
>            Assignee: Tsz Wo (Nicholas), SZE
>            Priority: Minor
>             Fix For: 0.24.0, 0.23.3
>
>         Attachments: c8118_20120228.patch
>
>
> There are many InstanceAlreadyExistsException stack traces in the unit tests output like below.
> {noformat}
> javax.management.InstanceAlreadyExistsException: Hadoop:service=NameNode,name=NameNodeInfo
> 	at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:453)
> 	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.internal_addObject(DefaultMBeanServerInterceptor.java:1484)
> 	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:963)
> 	...
> {noformat}

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