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From "Sanjay Radia (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-245) Create symbolic links in HDFS
Date Wed, 03 Feb 2010 17:31:28 GMT

    [ https://issues.apache.org/jira/browse/HDFS-245?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12829152#action_12829152
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Sanjay Radia commented on HDFS-245:
-----------------------------------

Feedback on patch 31: TestFcHdfsSymlink

* dfsClient is unused.

* FileContext fc = FileContext.getFileContext(fs.getUri());
    should be 
    FileContext fc = FileContext.getFileContext(cluster.getUri());
    The FileSystem interface should not be used all all in any of the FileContext tests.

* Teardown
   move the deletes for base dir to teardown  - easier to add new tests

* testDiffFileContextRelTarget() why set wd?

* testAccessLinkFromFileSystem()    - this should really be FromAbsFileSystem (or FromAFS).

* testSetPermission
   Also add a few additional lines to test set-permission on link to a dir

* Add test for quota - setQuota should not follow symlink.

> Create symbolic links in HDFS
> -----------------------------
>
>                 Key: HDFS-245
>                 URL: https://issues.apache.org/jira/browse/HDFS-245
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>            Reporter: dhruba borthakur
>            Assignee: Eli Collins
>         Attachments: 4044_20081030spi.java, designdocv1.txt, designdocv2.txt, designdocv3.txt,
HADOOP-4044-strawman.patch, symlink-0.20.0.patch, symlink-25-hdfs.patch, symlink-26-hdfs.patch,
symlink-26-hdfs.patch, symLink1.patch, symLink1.patch, symLink11.patch, symLink12.patch, symLink13.patch,
symLink14.patch, symLink15.txt, symLink15.txt, symlink16-common.patch, symlink16-hdfs.patch,
symlink16-mr.patch, symlink17-common.txt, symlink17-hdfs.txt, symlink18-common.txt, symlink19-common-delta.patch,
symlink19-common.txt, symlink19-common.txt, symlink19-hdfs-delta.patch, symlink19-hdfs.txt,
symlink20-common.patch, symlink20-hdfs.patch, symlink21-common.patch, symlink21-hdfs.patch,
symlink22-common.patch, symlink22-hdfs.patch, symlink23-common.patch, symlink23-hdfs.patch,
symlink24-hdfs.patch, symlink27-hdfs.patch, symlink28-hdfs.patch, symlink29-hdfs.patch, symlink29-hdfs.patch,
symlink30-hdfs.patch, symlink31-hdfs.patch, symlink33-hdfs.patch, symlink35-hdfs.patch, symlink36-hdfs.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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