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From "Tom White (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-4745) EC2 scripts should configure Hadoop to use all available disks on large instances
Date Mon, 01 Dec 2008 14:56:44 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-4745?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tom White updated HADOOP-4745:
------------------------------

    Attachment: hadoop-4745.patch

Patch that changes the instance boot script to: query for the instance type, format and mount
available disks, configure hadoop-site.xml appropriately according to instance type.

> EC2 scripts should configure Hadoop to use all available disks on large instances
> ---------------------------------------------------------------------------------
>
>                 Key: HADOOP-4745
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4745
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: contrib/ec2
>    Affects Versions: 0.19.0
>            Reporter: Tom White
>            Assignee: Tom White
>             Fix For: 0.20.0
>
>         Attachments: hadoop-4745.patch
>
>
> The Hadoop configuration on EC2 currently always uses a single disk, even when more are
available (http://docs.amazonwebservices.com/AWSEC2/2007-08-29/DeveloperGuide/instance-storage.html).
Performance is significantly boosted by using all the available disks, so we should configure
Hadoop to use them automatically.

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