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From "Gary Gregory (JIRA)" <>
Subject [jira] [Commented] (COMPRESS-206) TarArchiveOutputStream sometimes writes garbage beyond the end of the archive
Date Wed, 24 Oct 2012 13:40:12 GMT


Gary Gregory commented on COMPRESS-206:

If you take care of your relationship with patience and package the test and fix into an SVN
diff patch file, the likelihood of this issue being addressed quickly will increase tremendously!
> TarArchiveOutputStream sometimes writes garbage beyond the end of the archive
> -----------------------------------------------------------------------------
>                 Key: COMPRESS-206
>                 URL:
>             Project: Commons Compress
>          Issue Type: Bug
>          Components: Compressors
>    Affects Versions: 1.0, 1.4.1
>         Environment: Linux x86
>            Reporter: Peter De Maeyer
>         Attachments:
> For some combinations of file lengths, the archive created by TarArchiveOutputStream
writes garbage beyond the end of the TAR stream. TarArchiveInputStream can still read the
stream without problems, but it does not read beyond the garbage. This is problematic for
my use case because I write a checksum _after_ the TAR content. If I then try to read the
checksum back, I read garbage instead.
> Functional impact:
> * TarArchiveInputStream is asymmetrical with respect to TarArchiveOutputStream, in the
sense that TarArchiveInputStream does not read everything that was written by TarArchiveOutputStream.
> * The content is unnecessarily large. The garbage is totally unnecessarily large: ~10K
overhead compared to Linux command-line tar.
> This symptom is remarkably similar to #COMPRESS-81, which is supposedly fixed since 1.1.
Except for the fact that this issue still exists... I've tested this with 1.0 and 1.4.1.

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