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From "Joep Rottinghuis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8847) Change untar to use Java API instead of spawning tar process
Date Wed, 03 Oct 2012 18:26:08 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8847?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13468721#comment-13468721
] 

Joep Rottinghuis commented on HADOOP-8847:
------------------------------------------

Are symlinks a factor in the pure Java implementation?

On Unix, tar will handle symlinks appropriately and restore them properly (even if there are
loops in the symlinks). Recursive descent with loops could be a problem.

As long as Java implementation is limited to Windows this may not matter.
                
> Change untar to use Java API instead of spawning tar process
> ------------------------------------------------------------
>
>                 Key: HADOOP-8847
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8847
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Bikas Saha
>            Assignee: Bikas Saha
>         Attachments: HADOOP-8847.branch-1-win.1.patch, test-untar.tar, test-untar.tgz
>
>
> Currently FileUtil.unTar() spawns tar utility to do the work. Tar may not be present
on all platforms by default eg. Windows. So changing this to use JAVA API's would help make
it more cross-platform. FileUtil.unZip() uses the same approach.

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