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From "Andrei Savu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (WHIRR-332) Need to specify different instance size/type depending on role
Date Tue, 06 Sep 2011 01:23:10 GMT

    [ https://issues.apache.org/jira/browse/WHIRR-332?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13097683#comment-13097683
] 

Andrei Savu commented on WHIRR-332:
-----------------------------------

I believe that we need something like: whirr.templates.roles.${template-group}.hardware-id


> Need to specify different instance size/type depending on role
> --------------------------------------------------------------
>
>                 Key: WHIRR-332
>                 URL: https://issues.apache.org/jira/browse/WHIRR-332
>             Project: Whirr
>          Issue Type: Bug
>          Components: service/hadoop
>    Affects Versions: 0.5.0
>            Reporter: Paul Baclace
>
> When setting up Hadoop, whirr.hardware-id is used in the configuration to set a single
instance size/type for both nn,jt and dn,tt roles, but there are workloads that benefit from
having a different instance size/type for each role.  This need is even greater for ensembles
with Zookeeper and HBase.
> Without this, a small Whirr cluster underutilizes resources. 
> whirr.hardware-id should be a used to set a default instance size/type, and variations
like whirr.${role}.hardware-id could be used to set size/type more specifically. This is a
simple, obvious, and easy to implement mechanism to provide this functionality.

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