[ https://issues.apache.org/jira/browse/HADOOP-5519?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Owen O'Malley updated HADOOP-5519:
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Attachment: remove-prime.patch
Just removes the confusing advice.
> Remove claims from mapred-default.xml that prime numbers of tasks are helpful.
> ------------------------------------------------------------------------------
>
> Key: HADOOP-5519
> URL: https://issues.apache.org/jira/browse/HADOOP-5519
> Project: Hadoop Core
> Issue Type: Improvement
> Components: mapred
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 0.20.0
>
> Attachments: remove-prime.patch
>
>
> There is no value in using prime numbers for numbers of tasks. In fact, most jobs don't
even need the number of maps set, since it will increase to the number of blocks.
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