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https://issues.apache.org/jira/browse/HADOOP-9884?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andras Bokor resolved HADOOP-9884.
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Resolution: Done
> Hadoop calling du -sk is expensive
> ----------------------------------
>
> Key: HADOOP-9884
> URL: https://issues.apache.org/jira/browse/HADOOP-9884
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Alex Newman
>
> On numerous occasions we've had customers worry about slowness while hadoop
> calls du -sk underneath the hood. For most of these users getting the
> information from df would be sufficient and much faster. In fact there is a
> hack going around, that is quiet common that replaces df with du. Sometimes
> people have to tune the vcache. What if we just allowed users to use the df
> information instead of the du information with a patch and config setting.
> I'd be glad to code it up
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