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From "Ming Ma (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-4145) Provide metrics for hbase client
Date Thu, 28 Jul 2011 17:59:09 GMT
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. 

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