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

Tom White resolved HADOOP-4745.
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Resolution: Duplicate

This was fixed as a part of HADOOP-6108.
EC2 scripts should configure Hadoop to use all available disks on large instances
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Key: HADOOP-4745
URL: https://issues.apache.org/jira/browse/HADOOP-4745
Project: Hadoop Common
Issue Type: Improvement
Components: contrib/cloud
Affects Versions: 0.19.0
Reporter: Tom White
Assignee: Tom White
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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