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https://issues.apache.org/jira/browse/HDFS-2450?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13135584#comment-13135584
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Robert Joseph Evans commented on HDFS-2450:
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I am not an expert in HDFS, but I have read through the changes and they look
good to me. Only one new public API was added NetUtils.getCanonicalUri, which
has tests for it. I am not positive how DistibutedFileSystem's uri is used in
all cases, but from what I have read so far it looks OK to not to the port
modifications that it was doing previous to this patch.
> Only complete hostname is supported to access data via hdfs://
> --------------------------------------------------------------
>
> Key: HDFS-2450
> URL: https://issues.apache.org/jira/browse/HDFS-2450
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 0.20.205.0
> Reporter: Rajit Saha
> Assignee: Daryn Sharp
> Attachments: HDFS-2450-1.patch, HDFS-2450-2.patch, HDFS-2450.patch,
> IP vs. Hostname.pdf
>
>
> If my complete hostname is host1.abc.xyz.com, only complete hostname must be
> used to access data via hdfs://
> I am running following in .20.205 Client to get data from .20.205 NN (host1)
> $hadoop dfs -copyFromLocal /etc/passwd hdfs://host1/tmp
> copyFromLocal: Wrong FS: hdfs://host1/tmp, expected: hdfs://host1.abc.xyz.com
> Usage: java FsShell [-copyFromLocal <localsrc> ... <dst>]
> $hadoop dfs -copyFromLocal /etc/passwd hdfs://host1.abc/tmp/
> copyFromLocal: Wrong FS: hdfs://host1.blue/tmp/1, expected:
> hdfs://host1.abc.xyz.com
> Usage: java FsShell [-copyFromLocal <localsrc> ... <dst>]
> $hadoop dfs -copyFromLocal /etc/passwd hftp://host1.abc.xyz/tmp/
> copyFromLocal: Wrong FS: hdfs://host1.blue/tmp/1, expected:
> hdfs://host1.abc.xyz.com
> Usage: java FsShell [-copyFromLocal <localsrc> ... <dst>]
> Only following is supported
> $hadoop dfs -copyFromLocal /etc/passwd hdfs://host1.abc.xyz.com/tmp/
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