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From "Steven Yates (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8905) Add metrics for HTTP Server
Date Wed, 08 May 2013 12:31:17 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8905?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13651846#comment-13651846
] 

Steven Yates commented on HADOOP-8905:
--------------------------------------

Perhaps exposing HttpServer metrics should be optional;

We may need to discuss including an additional Configuration arg within yarn
i.e yarn.nodemanager.http.jmx [default:true]
                
> Add metrics for HTTP Server
> ---------------------------
>
>                 Key: HADOOP-8905
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8905
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: metrics
>    Affects Versions: 3.0.0
>            Reporter: Todd Lipcon
>              Labels: newbie
>
> Currently we don't expose any metrics about the HTTP server. It would be useful to be
able to monitor the following:
> - Number of threads currently actively serving servlet requests
> - Total number of requests served
> - Perhaps break down time/count by endpoint (eg /jmx, /conf, various JSPs)
> This becomes more important as http-based protocols like webhdfs become more common

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