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From "Konstantin Shvachko (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4044) Create symbolic links in HDFS
Date Wed, 19 Nov 2008 22:37:45 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4044?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12649189#action_12649189
] 

Konstantin Shvachko commented on HADOOP-4044:
---------------------------------------------

> 1. can re-run the test and post them here.
Yes, that's what I mean the results should be posted.

> 2. every operation in DFSClient will have to convert a FsResultWritbale object into a
FsResult
No they don't because FsResultWritbale is a subclass of FsResult. So RPC call returns FsResultWritbale
and DFSClient can return at further up as FsResult no conversion needed. 
Please look at the implementation of {{DFSClient.setReplication()}} above.

> 4. Sure you can remove the method in a separate jira prior this one.

> Create symbolic links in HDFS
> -----------------------------
>
>                 Key: HADOOP-4044
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4044
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: dfs
>            Reporter: dhruba borthakur
>            Assignee: dhruba borthakur
>             Fix For: 0.20.0
>
>         Attachments: 4044_20081030spi.java, HADOOP-4044-strawman.patch, symLink1.patch,
symLink1.patch, symLink11.patch, symLink12.patch, symLink13.patch, symLink14.patch, symLink4.patch,
symLink5.patch, symLink6.patch, symLink8.patch, symLink9.patch
>
>
> HDFS should support symbolic links. A symbolic link is a special type of file that contains
a reference to another file or directory in the form of an absolute or relative path and that
affects pathname resolution. Programs which read or write to files named by a symbolic link
will behave as if operating directly on the target file. However, archiving utilities can
handle symbolic links specially and manipulate them directly.

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