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From "Akira AJISAKA (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-7182) JMX metrics aren't accessible when NN is busy
Date Sat, 20 Dec 2014 15:30:13 GMT

     [ https://issues.apache.org/jira/browse/HDFS-7182?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Akira AJISAKA updated HDFS-7182:
--------------------------------
    Target Version/s: 2.7.0
        Hadoop Flags: Reviewed

> JMX metrics aren't accessible when NN is busy
> ---------------------------------------------
>
>                 Key: HDFS-7182
>                 URL: https://issues.apache.org/jira/browse/HDFS-7182
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Ming Ma
>            Assignee: Ming Ma
>         Attachments: HDFS-7182-2.patch, HDFS-7182.patch
>
>
> HDFS-5693 has addressed all NN JMX metrics in hadoop 2.0.5. Since then couple new metrics
have been added. It turns out "RollingUpgradeStatus" requires FSNamesystem read lock.



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