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Date: Thu, 30 Jul 2009 14:29:14 -0700 (PDT)
From: "Gary Helmling (JIRA)" <jira@apache.org>
To: hbase-dev@hadoop.apache.org
Subject: [jira] Commented: (HBASE-1722) Add support for exporting HBase
 metrics via JMX
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    [ https://issues.apache.org/jira/browse/HBASE-1722?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12737300#action_12737300 ] 

Gary Helmling commented on HBASE-1722:
--------------------------------------

Ok, I'll do a write up in metrics.xml instead and post patches for that against 0.19 and trunk.  Thanks for the quick review!

> Add support for exporting HBase metrics via JMX
> -----------------------------------------------
>
>                 Key: HBASE-1722
>                 URL: https://issues.apache.org/jira/browse/HBASE-1722
>             Project: Hadoop HBase
>          Issue Type: Improvement
>          Components: ipc, master, regionserver
>    Affects Versions: 0.19.3
>            Reporter: Gary Helmling
>            Priority: Minor
>             Fix For: 0.21.0
>
>         Attachments: jmx_metrics-0.19.patch, jmx_support-trunk.patch
>
>
> Current HBase metrics collection and reporting (for the 0.19 releases at least) doesn't seem to export any of the metrics as MBeans via JMX.
> This patch adds JMX MBean support for reporting metrics collected in 3 areas:
> * org.apache.hadoop.hbase.ipc.HBaseRpcMetrics
> * org.apache.hadoop.hbase.master.metrics.MasterMetrics
> * org.apache.hadoop.hbase.regionserver.metrics.RegionServerMetrics
> This patch is only against the 0.19 branch, as the metrics API seems to have changed a bit in Hadoop 0.20, including adding support for dynamic MBeans.  I'll add a patch reworked for trunk shortly.

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