1) Metrics infos have been collected from HMaster\RS, and covering rpc, jvm, hbase functional module (like compaction\flush\request Count\DataBlock read &&write etc).
2) You can set metrics info handler in conf/hadoop-metrics.properties for example, you can set hbase.class = org.apache.hadoop.metrics.ganglia.GangliaContext31, it will tell Metrics System where the metrics will be sent to. Of course, this is Ganglia. if set hbase.class=org.apache.hadoop.hbase.metrics.file.TimeStampingFileContext, it will write the metrics to file. # hbase.class=org.apache.hadoop.metrics.ganglia.GangliaContext # hbase.class=org.apache.hadoop.metrics.ganglia.GangliaContext31 # hbase.period=10 # hbase.servers=10.100.4.151:8650 #hbase.class=org.apache.hadoop.hbase.metrics.file.TimeStampingFileContext #hbase.period=10 #hbase.fileName=/opt/hbase/logs/metrics_hbase.log 2013/6/6 Joarder KAMAL <[email protected]> > Two Questions: > > 1. Is it possible to extend HBase metrics/reporting framework to generate > custom metrics? I was looking at the api docs > http://hbase.apache.org/apidocs/ > 2. Is there any way to write my own client (instead of using Ganglia or > else) to retrieve the currently available metrics? > > HBase version: 0.94.7 > > Any suggestions will be very helpful. > > Many thanks ... > > Regards, > Joarder Kamal > -- Bing Jiang Tel：(86)134-2619-1361 weibo: http://weibo.com/jiangbinglover BLOG: http://blog.sina.com.cn/jiangbinglover National Research Center for Intelligent Computing Systems Institute of Computing technology Graduate University of Chinese Academy of Science
