[jira] Commented: (HADOOP-4044) Create symbolic links in HDFS

["Raghu Angadi (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-4044?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12636757#action_12636757 ] 

Raghu Angadi commented on HADOOP-4044:
--------------------------------------


> I vote for using exceptions internal to the NameNode to keep internal interfaces clean and elegant. 

Why should NameNode not be clean and elegant :)? I actually don't think returning some base class unrelated to member/api is clean.. it is essentially same as returning "Object" and letting the upper layers checking the type.

> can somebody from dfsland please review this too? Thanks.
Because of my above prejudice, I am probably not the right person to review.

> 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
>         Attachments: symLink1.patch, symLink1.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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