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https://issues.apache.org/jira/browse/HDFS-786?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12797503#action_12797503
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Chris Douglas commented on HDFS-786:
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This change:
{noformat}
final String str = "hftp://";
+ CONF.get(DFSConfigKeys.DFS_NAMENODE_HTTP_ADDRESS_KEY);
hftpURI = new URI(str);
- hftpFs = (HftpFileSystem) FileSystem.newInstance(hftpURI, CONF);
+ hftpFs = cluster.getHftpFileSystem();
{noformat}
makes dead code of the preceding lines
> 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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