Jody Bruchon, the jdupes author, told me that the hash database feature is
disabled due to a conditional logic error introduced in v1.28.0 during the
major hashdb changes.

The condition was inadvertently written with the opposite logic, completely
disabling the hash database functionality.

This does not affect the correctness of jdupes results or pose any data
integrity risk, but causes a significant performance regression, especially
when processing large, unchanging datasets where the hash database provides
substantial performance improvements.

The issue has been confirmed upstream, and a new version (1.31.2) containing
the fix has been released.

Regards,

Eriberto

We believe that the bug you reported is fixed in the latest version of
jdupes, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1148491@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Joao Eriberto Mota Filho <eriberto@debian.org> (supplier of updated jdupes package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Sat, 19 Sep 2026 22:29:54 -0300
Source: jdupes
Architecture: source
Version: 1.31.2-1
Distribution: unstable
Urgency: medium
Maintainer: Joao Eriberto Mota Filho <eriberto@debian.org>
Changed-By: Joao Eriberto Mota Filho <eriberto@debian.org>
Closes: 1148491
Changes:
 jdupes (1.31.2-1) unstable; urgency=medium
 .
   * New upstream version 1.31.2. (Closes: #1148491)
   * debian/control:
       - Bumped compat level to 14.
       - Bumped Standards-Version to 4.7.4.
       - Removed no longer needed "Priority: optional" field.
   * debian/copyright: updated upstream and packaging copyright years.
   * debian/patches/010_add-gcc-hardening.patch: removed because the upstream
     fixed the source code. Thanks!
   * debian/rules: set the DESTDIR variable on install target.
   * debian/watch: migrated to version 5.
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 5505b2156fbe5b2a89dcb91bd5fafce3a2689d83 181835 jdupes_1.31.2.orig.tar.gz
 effe79755896db85991f782e3db64beaa92a46e8 3285080 jdupes_1.31.2-1.debian.tar.xz
 d48a28c905ec1594005245ec58487d2c5453e915 6181 jdupes_1.31.2-1_source.buildinfo
Checksums-Sha256:
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Files:
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