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From "girish vaitheeswaran (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-2886) Track individual RPC metrics.
Date Fri, 22 Feb 2008 23:15:19 GMT
Track individual RPC metrics.

                 Key: HADOOP-2886
                 URL: https://issues.apache.org/jira/browse/HADOOP-2886
             Project: Hadoop Core
          Issue Type: Improvement
          Components: metrics
            Reporter: girish vaitheeswaran

There is currently no mechanism to track performance metrics at the granularity of a specific
RPC. So For e.g. if we wanted to capture average latency for the openFile RPC or for the createFile
RPC the current infrastructure does not support that.

The implementation involves having a simple HashMap where every new Rpc metric being added
would be inserted into the HashMap. Since there is a mechanism to obtain RPC latencies already
(without the name of the specific RPC), the identification of what RPC is involved would be
done by doing a lookup on the HashMap.

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