Mailing-List: contact mapreduce-issues-help@hadoop.apache.org; run by ezmlm
Precedence: bulk
Reply-To: mapreduce-issues@hadoop.apache.org
Date: Thu, 2 Feb 2012 20:08:54 +0000 (UTC)
From: "Arun C Murthy (Updated) (JIRA)" <jira@apache.org>
To: mapreduce-issues@hadoop.apache.org
Message-ID: 
 <1774262925.4461.1328213334054.JavaMail.tomcat@hel.zones.apache.org>
In-Reply-To: 
 <1203201635.31.1328136473950.JavaMail.tomcat@hel.zones.apache.org>
Subject: [jira] [Updated] (MAPREDUCE-3784) maxActiveApplications(|PerUser)
 per queue is too low for small clusters
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit


     [ https://issues.apache.org/jira/browse/MAPREDUCE-3784?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Arun C Murthy updated MAPREDUCE-3784:
-------------------------------------

    Attachment: MAPREDUCE-3784.patch
    
> maxActiveApplications(|PerUser) per queue is too low for small clusters
> -----------------------------------------------------------------------
>
>                 Key: MAPREDUCE-3784
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3784
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.23.0
>            Reporter: Ramya Sunil
>            Assignee: Arun C Murthy
>             Fix For: 0.23.1
>
>         Attachments: MAPREDUCE-3784.patch, MAPREDUCE-3784.patch, MAPREDUCE-3784.patch, MAPREDUCE-3784.patch, MAPREDUCE-3784.patch
>
>
> We ran into this issue while testing on small clusters. 
> On a 7node cluster with 8G per node,  for a queue with absolute capacity 30%, user limit 100%, maxActiveApplications and maxActiveApplicationsPerUser is calculated to be 1.
> This means that even though the queue has 17GB(0.3*8*7), only 1 user can run 1 app at a given time queuing up rest of the apps/users. This hurts performance on small clusters.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira