Add support for exporting HBase metrics via JMX
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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
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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