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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HDFS-1531) Clean up stack traces due to duplicate MXBean registration
Date Tue, 07 Dec 2010 21:51:10 GMT

     [ https://issues.apache.org/jira/browse/HDFS-1531?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Todd Lipcon updated HDFS-1531:

    Attachment: hdfs-1531.txt

Trivial patch. I ran a unit test and verified that the ugly stack traces are gone.

> Clean up stack traces due to duplicate MXBean registration
> ----------------------------------------------------------
>                 Key: HDFS-1531
>                 URL: https://issues.apache.org/jira/browse/HDFS-1531
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: data-node, name-node
>    Affects Versions: 0.22.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Trivial
>         Attachments: hdfs-1531.txt
> In the minicluster unit tests, we try to register MXBeans for each DN, but since the
JMX context is JVM-wide, we get a InstanceAlreadyExistsException for all but the first. This
stack trace clutters test logs a lot.

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