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https://issues.apache.org/jira/browse/COMPRESS-124?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12971567#action_12971567
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Patrick Dreyer edited comment on COMPRESS-124 at 12/15/10 2:36 AM:
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Including not only the source but as well the documentation and changes.xml
Unfortunately, I was not able to generate a test TAR archive containing sparse
files, even invoking GNU Tar with "--sparse" and all the TAR archives I have
with such sparse files, contain information I'm not allowed disclose.
If someone is able to generate a TAR archive containing sparse files and
provide such, pleas let me know so I can include the necessary unit tests.
was (Author: patrickdreyer):
Including not only the source but as well the documentation and changes.xml
> Unable to extract a TAR file that contains sparse entries
> ---------------------------------------------------------
>
> Key: COMPRESS-124
> URL: https://issues.apache.org/jira/browse/COMPRESS-124
> Project: Commons Compress
> Issue Type: New Feature
> Components: Archivers
> Affects Versions: 1.1, 1.2
> Environment: Platform independent. However, I'm currently using
> Window 7 Enterprise.
> Reporter: Patrick Dreyer
> Fix For: 1.2
>
> Attachments: gnuSparseFile.patch
>
>
> Good news first: I already have the patch ready for that.
> I got several TAR files which I could not extract with any of the existing
> Java implementations, but I could extract all those TAR files successfully
> with GNU tar.
> It turned out that all the failing TAR files contained so called sparse
> files. Investigating the source code of all existing Java TAR implementations
> showed me that none of them even recognizes the existence of GNU sparse
> entries.
> Actually, I don't need to process one of the contained sparse files and I'm
> happy if I'm at least able to correctly untar all the non-sparsed files.
> Thus, it would be sufficient recognizing sparse files without the need to
> correctly un-sparse them while extracting. As long as all non-sparsed files
> get extracted correctly, I'm fine.
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