hadoop-common-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Raghu Angadi (JIRA)" <j...@apache.org>
Subject [jira] Issue Comment Edited: (HADOOP-4044) Create symbolic links in HDFS
Date Thu, 11 Sep 2008 16:23:48 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4044?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12630242#action_12630242
] 

rangadi edited comment on HADOOP-4044 at 9/11/08 9:23 AM:
---------------------------------------------------------------

bq. @Raghu: The FSDataInputStream will implement another interface StreamType that will store
the information on whether this is a symbolc link. No extra RPC is needed. 

Ok, this is one of the options mentioned earlier that works just for open(). As the discussion
in the Jira shows, symlinks is kind of fundamental change to filesystem and affects various
parts. Just like open(), once various options for general handling of links is discussed here,
I don't think patch will be much more complicated than what you have attached.

Symlinks have been used for many decades and I don't think there any lack of use cases. I
don't think HADOOP-4058 should alone be the criteria for this Jira. 


      was (Author: rangadi):
    bq. @Raghu: The FSDataInputStream will implement another interface StreamType that will
store the information on whether this is a symbolc link. No extra RPC is needed. 

Ok, this is one of the options for mentioned earlier that works just for open(). As the earlier
discussions in the Jira shows, symlinks is kind of fundamental change to filesystem and affects
various parts. Just like open(), once various options for general handling of links is discussed
here, I don't think patch will be much more complicated than what you have attached.

Symlinks have been used for many decades and I don't think there any lack of use cases. I
don't think HADOOP-4058 should alone be the criteria for this Jira. 

  
> 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
>
>
> 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.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message