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Date: Thu, 7 Aug 2014 21:27:13 +0000 (UTC)
From: "Sandy Ryza (JIRA)" <jira@apache.org>
To: yarn-issues@hadoop.apache.org
Message-ID: <JIRA.12729518.1406225756884.38007.1407446833111@arcas>
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References: <JIRA.12729518.1406225756884@arcas>
Subject: [jira] [Commented] (YARN-2352) FairScheduler: Collect metrics on
 duration of critical methods that affect performance
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    [ https://issues.apache.org/jira/browse/YARN-2352?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14089874#comment-14089874 ] 

Sandy Ryza commented on YARN-2352:
----------------------------------

My only comment is that I think it would make more sense to call these metrics FSOpDurations.  Otherwise LGTM.

> FairScheduler: Collect metrics on duration of critical methods that affect performance
> --------------------------------------------------------------------------------------
>
>                 Key: YARN-2352
>                 URL: https://issues.apache.org/jira/browse/YARN-2352
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: scheduler
>    Affects Versions: 2.4.1
>            Reporter: Karthik Kambatla
>            Assignee: Karthik Kambatla
>         Attachments: fs-perf-metrics.png, yarn-2352-1.patch, yarn-2352-2.patch, yarn-2352-2.patch, yarn-2352-3.patch, yarn-2352-4.patch
>
>
> We need more metrics for better visibility into FairScheduler performance. At the least, we need to do this for (1) handle node events, (2) update, (3) compute fairshares, (4) preemption.


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