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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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