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From "Srimanth Gunturi (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (AMBARI-5400) Inefficient default Map heap size values set by Ambari
Date Wed, 09 Apr 2014 02:03:14 GMT

     [ https://issues.apache.org/jira/browse/AMBARI-5400?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Srimanth Gunturi resolved AMBARI-5400.
--------------------------------------

    Resolution: Fixed

+1 received. Committed to trunk and branch-1.5.1

> Inefficient default Map heap size values set by Ambari
> ------------------------------------------------------
>
>                 Key: AMBARI-5400
>                 URL: https://issues.apache.org/jira/browse/AMBARI-5400
>             Project: Ambari
>          Issue Type: Task
>          Components: client
>    Affects Versions: 1.5.1
>            Reporter: Srimanth Gunturi
>            Assignee: Srimanth Gunturi
>             Fix For: 1.5.1
>
>         Attachments: AMBARI-5400.patch
>
>
> Currently Ambari calculates the number of containers per node, and the size of each container.
This size is used to set the java heap size for Maps and Reduces.
> Ambari sets the Map heap size using the following formula - which is inefficient usage
of resources.
> {code}
> map_memory = math.floor(container_ram / 2)
> {code}



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