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From "Harsh J (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-2170) Send out last-minute load averages in TaskTrackerStatus
Date Thu, 16 Feb 2012 11:12:59 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2170?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13209275#comment-13209275
] 

Harsh J commented on MAPREDUCE-2170:
------------------------------------

Ambud,

What gain do you see in disconnecting it off of other stats (CPU/Memory/etc.) in the regular
heartbeats?
                
> Send out last-minute load averages in TaskTrackerStatus
> -------------------------------------------------------
>
>                 Key: MAPREDUCE-2170
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2170
>             Project: Hadoop Map/Reduce
>          Issue Type: New Feature
>          Components: jobtracker
>    Affects Versions: 0.22.0
>            Reporter: Harsh J
>            Assignee: Harsh J
>            Priority: Critical
>             Fix For: 0.24.0
>
>         Attachments: mapreduce.loadaverage.r3.diff, mapreduce.loadaverage.r4.diff, mapreduce.loadaverage.r5.diff,
mapreduce.loadaverage.r6.diff
>
>   Original Estimate: 20m
>  Remaining Estimate: 20m
>
> Load averages could be useful in scheduling. This patch looks to extend the existing
Linux resource plugin (via /proc/loadavg file) to allow transmitting load averages of the
last one minute via the TaskTrackerStatus.
> Patch is up for review, with test cases added, at: https://reviews.apache.org/r/20/

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