Provide metrics for hbase client
--------------------------------
Key: HBASE-4145
URL: https://issues.apache.org/jira/browse/HBASE-4145
Project: HBase
Issue Type: Improvement
Reporter: Ming Ma
Assignee: Ming Ma
Sometimes it is useful to get some metrics from hbase client point of view.
1. scan.next() call latency. Useful for regular map job scenario, where we want
to see the latency from client side that includes RPC.
2. region server retry count. Some spike could indicate some issues in network
or RS availability.
In the map reduce scenario, hbase client will run the same machines as RSs. So
if the MetricsContext is usually available for hbase client.
--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira
