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https://issues.apache.org/jira/browse/HADOOP-909?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hairong Kuang updated HADOOP-909:
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Attachment: du.patch
The new patch reflects Doug's suggestion. Thank you, Doug.
> dfs "du" shows that the size of a subdirectory is 0
> ---------------------------------------------------
>
> Key: HADOOP-909
> URL: https://issues.apache.org/jira/browse/HADOOP-909
> Project: Hadoop
> Issue Type: Bug
> Components: dfs
> Affects Versions: 0.10.1
> Reporter: Hairong Kuang
> Assigned To: Hairong Kuang
> Attachments: du.patch
>
>
> dfs "du" is implemented by sending a listPaths request to the namenode to get
> the size of each file/subdir under the directory. At the namenode side, the
> size of subdir was calculated by recursively going through the whole subtree
> with the subdir as the root. But starting from the release 0.10.0, the size
> of subdir is no longer gets calculated. So dfs "du" shows its size as 0.
> The problem is that both "du" and "list" send the same request "listPaths" to
> the namenode. The previous implmentation made list very expensive, but the
> current implementation makes du not working.
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