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https://issues.apache.org/jira/browse/HADOOP-1867?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eli Collins resolved HADOOP-1867.
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Resolution: Won't Fix
Out of date
> use single parameter to specify a node's available ram
> ------------------------------------------------------
>
> Key: HADOOP-1867
> URL: https://issues.apache.org/jira/browse/HADOOP-1867
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Doug Cutting
>
> To simplify configuration, we should use a single parameter to indicate a
> node's available RAM. Sites should not need to adjust more than this single
> parameter to configure nodes available memory. In task JVMs, some
> significant percentage of the memory should be reserved for application code,
> with the remainder divided among various system buffers.
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