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https://issues.apache.org/jira/browse/HADOOP-8847?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13469164#comment-13469164
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Bikas Saha commented on HADOOP-8847:
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I am going to restore old behavior for non Windows case. I dont see much value
in re-implementing all idiosyncrasies and features of unix tar in Java. The
Java implementation was to give a good enough implementation that meets the use
case of users submitting tar archives for distributed cache files. There are
some tests which validate this functionality and these were failing on Windows.
Most likely users will submit simple tar files to distributed cache. Windows
users will likely submit zip files and not tar files since tar is not native to
windows. Hence I will re-submit the patch which uses Java code only on Windows.
> 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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