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From "Sanjay Radia (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-2886) Track individual RPC metrics.
Date Tue, 18 Mar 2008 00:26:26 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-2886?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12579688#action_12579688
] 

Sanjay Radia commented on HADOOP-2886:
--------------------------------------

+1

> 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
>         Attachments: rpc-metrics.patch, rpc-metrics.patch, rpc-metrics.path, rpcmetrics.patch,
rpcmetrics.patch
>
>
> 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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