Track individual RPC metrics.
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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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