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https://issues.apache.org/jira/browse/HDFS-786?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12798355#action_12798355
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Hudson commented on HDFS-786:
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Integrated in Hadoop-Hdfs-trunk #195 (See
[http://hudson.zones.apache.org/hudson/job/Hadoop-Hdfs-trunk/195/])
> Implement getContentSummary(..) in HftpFileSystem
> -------------------------------------------------
>
> Key: HDFS-786
> URL: https://issues.apache.org/jira/browse/HDFS-786
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: Tsz Wo (Nicholas), SZE
> Fix For: 0.22.0
>
> Attachments: h786_20091223.patch, h786_20091224.patch,
> h786_20100104.patch, h786_20100106.patch
>
>
> HftpFileSystem does not override getContentSummary(..). As a result, it uses
> FileSystem's default implementation, which computes content summary on the
> client side by calling listStatus(..) recursively. In contrast,
> DistributedFileSystem has overridden getContentSummary(..) and does the
> computation on the NameNode.
> As a result, running "fs -dus" on hftp is much slower than running it on hdfs.
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