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From "Elliott Clark (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9180) Export JVM metrics via JMX
Date Mon, 07 Jan 2013 18:52:12 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9180?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13546144#comment-13546144
] 

Elliott Clark commented on HADOOP-9180:
---------------------------------------

HBase trunk has moved over to metrics v2 ( HBASE-4050 ) so only the older versions of hbase
will still be using the v1 code.
                
> Export JVM metrics via JMX
> --------------------------
>
>                 Key: HADOOP-9180
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9180
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: metrics
>    Affects Versions: 2.0.2-alpha
>            Reporter: Hangjun Ye
>            Priority: Minor
>             Fix For: 3.0.0
>
>         Attachments: HADOOP-9180.patch
>
>
> In metric v1, the JvmMetrics isn't registered as a bean and so the metrics are not exported
to JMX.
> The metric v1 is deprecating but currently hbase still relies on it. It results in that
we could get jvm metrics by accessing /metrics on hmaster/regionserver's info port, but can't
by accessing /jmx. This issue tries to fix it.

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