Currently the duplicate hash of a crash for Bugzilla is computed from the package NVR (name, version, release), path of the executable, and the backtrace hash.
This is very unfortunate because the package NVR is changed frequently (it contains Fedora OS version), and path of the executable is not a good differentiator. When multiple executables from a single component crash with similar backtrace, it is better to assume that they share code and have single Bugzilla bug report.
Please see the attached patches changing the code to compute the duplicate hash from the component name and the backtrace hash.
Karel
crash-catcher@lists.fedorahosted.org